UIAndData

StudentManager/Common/CursonManager.cs

@@ -11,6 +11,5 @@ namespace StudentManager.Common
 		public int CursonIndex { get; set; } = 0;
 		public int CursonCount { get; set; } = 0;
 		public string CursonName { get; set; } = string.Empty;
-
 	}
 }

StudentManager/Common/ErrorSet.cs

@@ -52,6 +52,11 @@ namespace StudentManager.Common
 		public List<int> CorrectArray { get; set; } = new List<int>();
 		public int CorrectThresholds { get; set; } = 2;
 
+		public ErrorBase Get(int id)
+		{
+			return Errores.ContainsKey(id) ? Errores[id] : null;
+		}
+
 		public void UpdateErrorSetData()
 		{
 			foreach (var item in Errores)
@@ -90,6 +95,7 @@ namespace StudentManager.Common
 					QuestionData = QuestionLib.Get(item.Key),
 					CorrectCount = item.Value.CorrectCount,
 					ErrorCount = item.Value.ErrorCount,
+					TotalUseCount = item.Value.TotalUseCount,
 					Status = item.Value.QuestionBase.Status
 				});
 			}
@@ -174,9 +180,9 @@ namespace StudentManager.Common
 		{
 			Errores.Clear();
 
-			SQLHelper.Query<UserQuestionData>(id).ForEach(x =>
+			SQLHelper.Instance.Query<UserQuestionData>(id).ForEach(x =>
 			{
-				AddQuestion(new QuestionBase { ID = x.PID, Status = x.Status });
+				Errores.Add(x.PID, new ErrorBase { CorrectCount = x.CorrectCount, ErrorCount = x.ErrorCount, TotalUseCount = x.CorrectCount + x.ErrorCount, QuestionBase = new QuestionBase { ID= x.PID, Status = x.Status } });
 			});
 		}
 	}

StudentManager/Common/FileSystem.cs

@@ -1,4 +1,5 @@
 using StudentManager.Data;
+using StudentManager.Interface;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -7,15 +8,15 @@ using System.Threading.Tasks;
 
 namespace StudentManager.Common
 {
-	public static class FileSystem
+	public class FileSystem : Singleton<FileSystem>
 	{
-		public static void SaveAll()
+		public void SaveAll()
 		{
 			StudentLib.Save();
 			QuestionLib.Save();
 		}
 
-		public static void FreashAllInfo()
+		public void FreashAllInfo()
 		{
 			StudentLib.FreshAllStudentInfo();
 			QuestionLib.FreshAllQuestion();

StudentManager/Common/HomeWorkManager.cs

@@ -1,7 +1,9 @@
 using DryIoc.ImTools;
 using StudentManager.Data;
+using StudentManager.Interface;
 using System;
 using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Security.Cryptography.X509Certificates;
 using System.Text;
@@ -9,16 +11,19 @@ using System.Threading.Tasks;
 
 namespace StudentManager.Common
 {
-	public static class HomeWorkManager
+	public class HomeWorkManager : Singleton<HomeWorkManager>
 	{
-		public static HomeWork CommonHomeWork { get; set; } = new HomeWork();
+		public void PublicHomework(uint lesson, bool appedCommonWork = false, bool appendErrorSet = false, int workNum = -1)
-
-		public static void PublicHomework(uint lesson, bool appedCommonWork = false, bool appendErrorSet = false, int workNum = -1)
 		{
             foreach (var item in StudentLib.StudentDic)
             {
 				item.Value.PublicHomeWork(lesson, appedCommonWork, appendErrorSet, workNum);
             }
         }
+
+		internal void DeleteHomework(DetailHomeWorkSetInfo homeWork)
+		{
+			throw new NotImplementedException();
+		}
 	}
 }

StudentManager/Common/HomeWorkSet.cs

@@ -1,4 +1,5 @@
 using DryIoc.ImTools;
+using LiveCharts;
 using MySqlX.XDevAPI;
 using StudentManager.Data;
 using System;
@@ -40,7 +41,7 @@ namespace StudentManager.Common
 		public List<QuestionBase> Questions { get; set; } = new List<QuestionBase>();
 
 
-		public int TotalCount { get; set; } = 0;
+		public int TotalCount { get{return Questions.Count;} }	
 		public int ErrorCount { get; set; } = 0;
 		public int CorrectCount { get; set; } = 0;
 
@@ -69,11 +70,11 @@ namespace StudentManager.Common
 			return list;
 		}
 
-		public void UpdateData()
+		public void UpdateData(bool FirstAdd = false)
 		{
 			CorrectCount = 0;
 			ErrorCount = 0;
-			TotalCount = Questions.Count;
+			if(FirstAdd) return;
 			foreach (var item in Questions)
 			{
 				if (item.Status == true) CorrectCount++;
@@ -92,7 +93,6 @@ namespace StudentManager.Common
 		public void AddHomeWork(int id)
 		{
 			Questions.Add(new QuestionBase { ID = id });
-			UpdateData();
 		}
 
 		public void RemoveHomeWork(QuestionBase workInfo)
@@ -136,25 +136,61 @@ namespace StudentManager.Common
 		public int TotalCorrectQuestionCount { get; set; } = 0;
 		public int TotalErrorQuestionRate { get; set; } = 0;
 
+		[JsonIgnore]
+		public List<string> Lessons { get; set; } = new List<string>();
+		[JsonIgnore]
+		public ChartValues<double> ErrorCounts { get; set; } = new ChartValues<double>();
+		[JsonIgnore]
+		public ChartValues<double> CorrectCounts { get; set; } = new ChartValues<double>();
+
+
+		public void UpdateDataView()
+		{
+			if(ErrorCounts.Count == 0)
+			{
+				foreach (var item in HomeWorks)
+				{
+					Lessons.Add(item.Key.ToString());
+					ErrorCounts.Add(item.Value.ErrorCount);
+					CorrectCounts.Add(item.Value.CorrectCount);
+				}
+			}
+		}
+
 
 		public void UpdateDate()
 		{
 			TotalSetCount = HomeWorks.Count;
 			TotalQuestionCount = 0;
+			TotalErrorQuestionCount = 0;
+			TotalCorrectQuestionCount = 0;
+
+			Lessons.Clear();
+			ErrorCounts.Clear();
+			CorrectCounts.Clear();
+
 			foreach (var item in HomeWorks)
             {
-				TotalQuestionCount = item.Value.TotalCount;
+				TotalQuestionCount += item.Value.TotalCount;
-				TotalErrorQuestionCount = item.Value.ErrorCount;
+				TotalErrorQuestionCount += item.Value.ErrorCount;
-				TotalCorrectQuestionCount = item.Value.CorrectCount;
+				TotalCorrectQuestionCount += item.Value.CorrectCount;
+
+				Lessons.Add(item.Key.ToString());
+				ErrorCounts.Add(item.Value.ErrorCount);
+				CorrectCounts.Add(item.Value.CorrectCount);
+            }
+			TotalErrorQuestionRate = TotalQuestionCount == 0 ? 0 : TotalErrorQuestionCount / TotalQuestionCount;
         }
 
-			TotalErrorQuestionRate = TotalErrorQuestionCount / TotalQuestionCount;
+		public bool Contain(uint id)
+		{
+			return HomeWorks.ContainsKey(id);
 		}
 
 		public void AddHomeWork(HomeWork homeWork)
 		{
 			HomeWorks.Add(homeWork.Lesson, homeWork);
-			UpdateDate();
+
 		}
 
 		public ObservableCollection<DetailHomeWorkInfo> GetDetailHomeWorkList(uint lesson)
@@ -164,16 +200,8 @@ namespace StudentManager.Common
 			{
 				list.Add(new DetailHomeWorkInfo
 				{
-					//QuestionData = {
-					//	QuestionData = QuestionLib.Get(item.ID),
-					//	Status = item.Status },
 					QuestionData = QuestionLib.Get(item.ID),
 					Status = item.Status,
-					//Lesson = HomeWorks[lesson].Lesson,
-					//DateTime = HomeWorks[lesson].DateTime,
-					//TotalCount = HomeWorks[lesson].TotalCount,
-					//ErrorCount = HomeWorks[lesson].ErrorCount,
-					//CorrectCount = HomeWorks[lesson].CorrectCount,
 					PID = item.ID
 				});
 
@@ -239,16 +267,15 @@ namespace StudentManager.Common
 		{
 			HomeWorks.Clear();
 
-			SQLHelper.Query<CursonQuestionsData>(id).ForEach(x =>
+			SQLHelper.Instance.Query<CursonQuestionsData>(id).ForEach(x =>
 			{
 				List<QuestionBase> Questions = new List<QuestionBase>();
 				x.ProblemIDS.ForEach(y => Questions.Add(new QuestionBase { ID = y, Status = x.CorrectIDS.Contains(y) }));
 				HomeWorks.Add(x.Lesson, new HomeWork
 				{
 					Lesson = x.Lesson,
-					TotalCount = x.ProblemIDS.Length,
 					CorrectCount = x.CorrectCount,
-					ErrorCount = x.TotalCount - x.CorrectCount,
+					ErrorCount = x.Status == 1 ? x.TotalCount - x.CorrectCount : 0,
 					DateTime = x.DateTime,
 					Questions = Questions,
 					Status = x.Status == 1
@@ -257,6 +284,12 @@ namespace StudentManager.Common
 
 			UpdateDate();
 		}
+
+		internal void DeleteHomework(uint lesson)
+		{
+			HomeWorks.Remove(lesson);
+			UpdateDate();
+		}
 	}
 
 }

StudentManager/Common/SQLHelper.cs

@@ -7,18 +7,10 @@ using System.Diagnostics;
 using System;
 using Enum = System.Enum;
 using System.Security.Cryptography;
+using StudentManager.Interface;
 
 namespace StudentManager.Common
 {
-	static class Tables
-	{
-		static public string UserTable { get; } = "users";
-		static public string QuesTable { get; } = "questions";
-		static public string UQTable { get; } = "user_data";
-		static public string CQTable { get; } = "curson_questions";
-	}
-
-
 	public static class SQLMapping
 	{
 		public static void Mapping<T>(MySqlDataReader reader)
@@ -66,7 +58,7 @@ namespace StudentManager.Common
 			else if (typeof(T) == typeof(CursonQuestionsData))
 			{
 
-				(data as CursonQuestionsData).UID = (int)reader[0];
+				(data as CursonQuestionsData).UID = (long)reader[0];
 				(data as CursonQuestionsData).ProblemIDS = string.IsNullOrEmpty(reader[1].ToString()) ? Array.Empty<int>() : JsonConvert.DeserializeObject<int[]>(reader[1].ToString());
 				(data as CursonQuestionsData).CorrectIDS = string.IsNullOrEmpty(reader[2].ToString()) ? Array.Empty<int>() : JsonConvert.DeserializeObject<int[]>(reader[2].ToString());
 				(data as CursonQuestionsData).Lesson = (uint)reader[3];
@@ -82,28 +74,12 @@ namespace StudentManager.Common
 				(data as UserQuestionData).CorrectCount = (byte)reader[3];
 				(data as UserQuestionData).Status = (byte)reader[4] == 1;
 			}
-
+		}
-
-
-			//for (int i = 0; i < reader.FieldCount; ++i)
-			//{
-			//	data?.GetType().GetProperties().ForEach(x => { x.SetValue(reader[i].GetType(), reader[i]); });
-			//}
 	}
 
-
+	public class SQLHelper : Singleton<SQLHelper>
-	}
-
-
-
-	struct userTable
 	{
-
+		private Dictionary<System.Type, string> TypeMap = new Dictionary<System.Type, string>
-	}
-
-	public static class SQLHelper
-	{
-		private static Dictionary<System.Type, string> TypeMap = new Dictionary<System.Type, string>
 		{
 			{ typeof(QuestionData), "questions" },
 			{ typeof(CursonQuestionsData), "curson_questions" },
@@ -111,127 +87,91 @@ namespace StudentManager.Common
 			{ typeof(UserQuestionData), "user_data" },
 		};
 
-		static string config = "server=8.137.125.29;port=3306;user=StudentManager;password=wangxin55;database=studentmanager";
+		private string config = "server=8.137.125.29;port=3306;user=StudentManager;password=wangxin55;database=studentmanager";
-		static MySqlConnection connection = null;
+		private MySqlConnection connection = null;
-		static MySqlCommand cmd = null;
+		private MySqlCommand cmd = null;
 
-		// update ** set ** = '**',... where ** = **;
+
-		// insert into ** values('**','**'...);
+		public List<T> Query<T>(long? id = null, params string[] queryParams) where T : IDataCommon, new()
-		// delete from ** where ** = **;
-		public static List<T> Query<T>(long id = 9999999, params string[] queryParams) where T : IDataCommon, new()
 		{
-
 			string tableName = string.Empty;
 			TypeMap.TryGetValue(typeof(T), out tableName);
-			connection = new MySqlConnection(config);
+			using (var connection = new MySqlConnection(config))
-
+			{
 				List<T> result = new List<T>();
-
 				string idName = typeof(T) == typeof(StudentData) ? "user_id" : typeof(T) == typeof(QuestionData) ? "problem_id" : "user_id";
+
 				try
 				{
 					connection.Open();
 					string queryStr = "";
 					if (queryParams.Length > 0)
 					{
-					string filedList = string.Join(",", queryParams);
+						string fieldList = string.Join(",", queryParams);
-					queryStr = $"select {filedList} from {tableName};";
+						queryStr = $"SELECT {fieldList} FROM {tableName}";
 
-					if (id != 9999999)
+						if (id.HasValue)
-						queryStr = $@"select {filedList} from {tableName} WHERE {idName} = {id};";
+							queryStr += $" WHERE {idName} = @id";
 					}
 					else
 					{
-					queryStr = $"select * from {tableName};";
+						queryStr = $"SELECT * FROM {tableName}";
-					if (id != 9999999)
+						if (id.HasValue)
-						queryStr = $@"select * from {tableName} WHERE {idName} = {id};";
+							queryStr += $" WHERE {idName} = @id";
 					}
 
-				cmd = new MySqlCommand(queryStr, connection);
+					using (var cmd = new MySqlCommand(queryStr, connection))
-				MySqlDataReader reader = cmd.ExecuteReader();
+					{
-
+						if (id.HasValue)
-
+							cmd.Parameters.AddWithValue("@id", id.Value);
 
+						using (var reader = cmd.ExecuteReader())
+						{
 							while (reader.Read())
 							{
 								T row = new T();
 								SQLMapping.Mapping(row, reader);
 								result.Add(row);
 							}
-
-				return result;
 						}
-			catch (Exception ex)
-			{
-				Console.WriteLine(ex.Message);
-				return null;
-			}
-			finally
-			{
-				cmd.Dispose();
-				connection.Close();
-			}
-		}
-
-		public static List<T> UnionQuery<T>(int id = 9999999, string tableName = "questions", string otherTable = "user_data") where T : IDataCommon, new()
-		{
-			connection = new MySqlConnection(config);
-
-			List<T> result = new List<T>();
-
-			try
-			{
-				connection = new MySqlConnection(config);
-				string queryStr = "";
-				if (id == 9999999)
-					queryStr = $@"SELECT u.user_id, q.* FROM {otherTable} u JOIN {tableName} q ON  u.problem_id = q.problem_id";
-				else
-					queryStr = $@"SELECT q.* FROM {tableName} q JOIN {otherTable} u ON q.problem_id = u.problem_id WHERE u.user_id = {id}";
-
-				cmd = new MySqlCommand(queryStr, connection);
-				MySqlDataReader reader = cmd.ExecuteReader();
-
-
-
-				while (reader.Read())
-				{
-					T row = new T();
-					SQLMapping.Mapping(row, reader);
-					result.Add(row);
 					}
 
 					return result;
 				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return new List<T> { };
+				}
 				catch (Exception ex)
 				{
-				Console.WriteLine(ex.Message);
+					Console.WriteLine($"General error: {ex.Message}");
-				return null;
+					return new List<T> { };
 				}
-			finally
-			{
-				cmd.Dispose();
-				connection.Close();
 			}
 		}
 
 
-		public static void Add<T>(T value)
+		public bool Add<T>(T value) where T : IDataCommon
+		{
+			string tableName = string.Empty;
+			TypeMap.TryGetValue(typeof(T), out tableName);
+
+			using (var connection = new MySqlConnection(config))
 			{
-			connection = new MySqlConnection(config);
 				try
 				{
-				string stableName = string.Empty;
-				TypeMap.TryGetValue(typeof(T), out stableName);
 					connection.Open();
 
 					if (typeof(T) == typeof(QuestionData))
 					{
 						var ques = value as QuestionData;
-					string sql = $"INSERT INTO {stableName} " +
+						string sql = $"INSERT INTO {tableName} " +
-			 $"(problem_id, problem_type, problem_stem, problem_answer, difficulty_level, category, tags, source, lesson, status) " +
+									 "(problem_id, problem_type, problem_stem, problem_answer, difficulty_level, category, tags, source, lesson, status) " +
-			 $"VALUES (@Id, @Type, @Stem, @Answer, @DifficultyLevel, @Category, @Tags, @Source, @Lesson, @Status)";
+									 "VALUES (@Id, @Type, @Stem, @Answer, @DifficultyLevel, @Category, @Tags, @Source, @Lesson, @Status)";
 
-					MySqlCommand cmd = new MySqlCommand(sql, connection);
+						using (var cmd = new MySqlCommand(sql, connection))
+						{
 							cmd.Parameters.AddWithValue("@Id", ques.Id);
 							cmd.Parameters.AddWithValue("@Type", ques.Type.ToString());
 							cmd.Parameters.AddWithValue("@Stem", ques.Stem);
@@ -244,24 +184,89 @@ namespace StudentManager.Common
 							cmd.Parameters.AddWithValue("@Status", ques.Status.ToString());
 
 							cmd.ExecuteNonQuery();
-
-					cmd.Dispose();
-
 						}
-				//string sql = $"insert into {stableName}"
+					}
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
 				}
 				catch (Exception ex)
 				{
-				Console.WriteLine(ex.Message);
+					Console.WriteLine($"General error: {ex.Message}");
+					return false;
 				}
-			finally
+				return true;
-			{
-				//cmd.Dispose();
-				connection.Close();
 			}
 		}
 
-		internal static void UpdateErrorSet(long UID, int PID, bool status)
+		public bool Delete<T>(T value) where T : IDataCommon
+		{
+			string tableName = string.Empty;
+			TypeMap.TryGetValue(typeof(T), out tableName);
+
+			using (var connection = new MySqlConnection(config))
+			{
+				try
+				{
+					connection.Open();
+
+					if (typeof(T) == typeof(CursonQuestionsData))
+					{
+						var ques = value as CursonQuestionsData;
+						string sql = "DELETE FROM " +
+									 $"{tableName} " +
+									 "WHERE user_id = @user_id AND lesson = @lesson";
+
+						using (var cmd = new MySqlCommand(sql, connection))
+						{
+							cmd.Parameters.AddWithValue("@user_id", ques.UID);
+							cmd.Parameters.AddWithValue("@lesson", ques.Lesson);
+
+							cmd.ExecuteNonQuery();
+						}
+					}
+					if (typeof(T) == typeof(QuestionData))
+					{
+						var ques = value as QuestionData;
+
+						if (ques == null)
+						{
+							Console.WriteLine($"ERROR: Check Input");
+							return false;
+						}
+
+						string sql = $"DELETE  " +
+									 $"FROM  {tableName}" +
+									 "WHERE problem_id = @problem_id";
+
+						using (var cmd = new MySqlCommand(sql, connection))
+						{
+							cmd.Parameters.AddWithValue("@problem_id", ques.Id);
+
+							cmd.ExecuteNonQuery();
+						}
+
+					}
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
+				}
+				catch (Exception ex)
+				{
+					Console.WriteLine($"General error: {ex.Message}");
+					return false;
+				}
+
+				return true;
+			}
+		}
+
+
+		internal bool UpdateErrorSet(long UID, ErrorBase error)
 		{
 			using (MySqlConnection connection = new MySqlConnection(config))
 			{
@@ -274,32 +279,35 @@ namespace StudentManager.Common
 					using (MySqlCommand checkCmd = new MySqlCommand(checkQuery, connection))
 					{
 						checkCmd.Parameters.AddWithValue("@user_id", UID);
-						checkCmd.Parameters.AddWithValue("@problem_id", PID);
+						checkCmd.Parameters.AddWithValue("@problem_id", error.QuestionBase.ID);
 
 						int recordCount = Convert.ToInt32(checkCmd.ExecuteScalar());
 
 						if (recordCount > 0)
 						{
 							// 记录存在，执行更新操作
-							string updateQuery = "UPDATE user_data SET status = @status WHERE user_id = @user_id AND problem_id = @problem_id";
+							string updateQuery = "UPDATE user_data SET status = @status, error_count = @error_count, correct_count = @correct_count" +
+								" WHERE user_id = @user_id AND problem_id = @problem_id";
 							using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
 							{
 								updateCmd.Parameters.AddWithValue("@user_id", UID);
-								updateCmd.Parameters.AddWithValue("@problem_id", PID);
+								updateCmd.Parameters.AddWithValue("@problem_id", error.QuestionBase.ID);
-								updateCmd.Parameters.AddWithValue("@status", status);
+								updateCmd.Parameters.AddWithValue("@error_count", error.ErrorCount);
+								updateCmd.Parameters.AddWithValue("@correct_count", error.CorrectCount);
+								updateCmd.Parameters.AddWithValue("@status", error.QuestionBase.Status);
 
 								updateCmd.ExecuteNonQuery();
 							}
 						}
 						else
 						{
-							if (status == false)
+							if (error.QuestionBase.Status == false)
 							{
 								string updateQuery = $"INSERT INTO user_data (user_id, problem_id) VALUES (@user_id, @problem_id)";
 								using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
 								{
 									updateCmd.Parameters.AddWithValue("@user_id", UID);
-									updateCmd.Parameters.AddWithValue("@problem_id", PID);
+									updateCmd.Parameters.AddWithValue("@problem_id", error.QuestionBase.ID);
 
 									updateCmd.ExecuteNonQuery();
 								}
@@ -307,18 +315,26 @@ namespace StudentManager.Common
 						}
 					}
 				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
+				}
 				catch (Exception ex)
 				{
 					Console.WriteLine(ex.Message);
+					return false;
 				}
 				finally
 				{
 					connection.Close();
 				}
+
+				return true;
 			}
 		}
 
-		internal static void UpdateHomework(long UID, uint lesson, string totalArray, string correctArray, DateTime dateTime, bool status)
+		internal bool UpdateHomework(long UID, uint lesson, string totalArray, string correctArray, DateTime dateTime, bool status)
 		{
 			using (MySqlConnection connection = new MySqlConnection(config))
 			{
@@ -341,19 +357,104 @@ namespace StudentManager.Common
 					}
 
 
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
 				}
 				catch (Exception ex)
 				{
 					Console.WriteLine(ex.Message);
+					return false;
 				}
 				finally
 				{
 					connection.Close();
 				}
+				return true;
 			}
 		}
 
-		internal static void AddHomework(CursonQuestionsData homeWork)
+		internal bool UpdateErrorSetUserInfo(long UID, uint totalCont, uint totalCorrectCount)
+		{
+			using (MySqlConnection connection = new MySqlConnection(config))
+			{
+				try
+				{
+					connection.Open();
+
+					string updateQuery = "UPDATE users SET errset_totals_questions = @totalCont, errset_correction_count = @totalErrorCount " +
+										 " WHERE user_id = @user_id";
+					using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
+					{
+						updateCmd.Parameters.AddWithValue("@user_id", UID);
+						updateCmd.Parameters.AddWithValue("@totalCont", totalCont);
+						updateCmd.Parameters.AddWithValue("@totalErrorCount", totalCorrectCount);
+
+						updateCmd.ExecuteNonQuery();
+					}
+
+
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
+				}
+				catch (Exception ex)
+				{
+					Console.WriteLine(ex.Message);
+					return false;
+				}
+				finally
+				{
+					connection.Close();
+				}
+				return true;
+			}
+		}
+
+		internal bool UpdateHomeworkTotalInfo(long UID, uint totalCont, uint totalErrorCount)
+		{
+			using (MySqlConnection connection = new MySqlConnection(config))
+			{
+				try
+				{
+					connection.Open();
+
+					string updateQuery = "UPDATE users SET total_hwq_count = @totalCont, total_hwq_error_count = @totalErrorCount, " +
+										 "WHERE user_id = @user_id";
+					using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
+					{
+						updateCmd.Parameters.AddWithValue("@user_id", UID);
+						updateCmd.Parameters.AddWithValue("@totalCont", totalCont);
+						updateCmd.Parameters.AddWithValue("@totalErrorCount", totalErrorCount);
+
+						updateCmd.ExecuteNonQuery();
+					}
+
+
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
+				}
+				catch (Exception ex)
+				{
+					Console.WriteLine(ex.Message);
+					return false;
+				}
+				finally
+				{
+					connection.Close();
+				}
+				return true;
+			}
+		}
+
+		internal bool AddHomework(CursonQuestionsData homeWork)
 		{
 			using (MySqlConnection connection = new MySqlConnection(config))
 			{
@@ -375,19 +476,37 @@ namespace StudentManager.Common
 						updateCmd.ExecuteNonQuery();
 					}
 
+					updateQuery = "UPDATE users SET home_work = @lesson " +
+								  "WHERE user_id = @user_id";
+
+					using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
+					{
+						updateCmd.Parameters.AddWithValue("@user_id", homeWork.UID);
+						updateCmd.Parameters.AddWithValue("@lesson", homeWork.Lesson);
+
+						updateCmd.ExecuteNonQuery();
+					}
+
+				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
 				}
 				catch (Exception ex)
 				{
-
+					return false;
 				}
 				finally
 				{
 					connection.Close();
 				}
+
+				return true;
 			}
 		}
 
-		internal static void UpdateQuestion(QuestionData ques)
+		internal bool UpdateQuestion(QuestionData ques)
 		{
 			using (MySqlConnection connection = new MySqlConnection(config))
 			{
@@ -425,14 +544,21 @@ namespace StudentManager.Common
 						Console.WriteLine($"{rowsAffected} rows updated.");
 					}
 				}
+				catch (MySqlException ex)
+				{
+					Console.WriteLine($"MySQL error: {ex.Message}");
+					return false;
+				}
 				catch (Exception ex)
 				{
 					Console.WriteLine(ex.Message);
+					return false;
 				}
 				finally
 				{
 					connection.Close();
 				}
+				return true;
 			}
 		}
 	}

StudentManager/Data/QuestionLib.cs

@@ -70,8 +70,8 @@ namespace StudentManager.Data
 			QuestionDic.Clear ();
 			QuestionTableDic.Clear ();
 			QuestionTableDesc.Clear ();
-			SQLHelper.Query<QuestionData>().ForEach(x => QuestionDic.Add(x.Id, x));
+			SQLHelper.Instance.Query<QuestionData>().ForEach(x => QuestionDic.Add(x.Id, x));
-			SQLHelper.Query<QuestionData>().ForEach(x => {
+			SQLHelper.Instance.Query<QuestionData>().ForEach(x => {
 				if (!QuestionTableDic.ContainsKey(x.Lesson))
 				{
 					QuestionTableDic[x.Lesson] = new Dictionary<int, QuestionData>();
@@ -136,7 +136,7 @@ namespace StudentManager.Data
 			QuestionTableDesc[question.Lesson].UpdateTime = DateTime.Now;
 			QuestionTableDesc[question.Lesson].TotalQuestions = (uint)QuestionTableDic[question.Lesson].Count;
 
-			SQLHelper.Add(question);
+			SQLHelper.Instance.Add(question);
 		}
 
 		public static void Remove(QuestionData question)

StudentManager/Data/StudentInfo.cs

@@ -28,7 +28,7 @@ namespace StudentManager.Data
 		{
 			StudentDic.Clear();
 
-			Debug.Assert(Path.Exists(LibPath));
+			if (!Path.Exists(LibPath + FileName)) return;
 			string file = File.ReadAllText(LibPath + FileName);
 			StudentDic = JsonSerializer.Deserialize<Dictionary<long, StudentInfo>>(file);
 		}
@@ -43,7 +43,7 @@ namespace StudentManager.Data
 		{
 			StudentDic.Clear();
 
-			SQLHelper.Query<StudentData>().ForEach(x =>
+			SQLHelper.Instance.Query<StudentData>().ForEach(x =>
 			StudentDic.Add(x.UID, new StudentInfo
 			{
 				UID = x.UID,
@@ -51,6 +51,7 @@ namespace StudentManager.Data
 				Address = x.Address,
 				Contact = x.Contact,
 				Grade = x.Grade,
+				Gender = x.Gender,
 				CurrentHomeWorkIndex = x.CurronHomeWorkIndex,
 			}));
 
@@ -96,6 +97,8 @@ namespace StudentManager.Data
 			studentData.ErrorSet.QueryErrorSet(studentData.UID);
 			studentData.HomeWorkSet.FreshAllHomeWork(studentData.UID);
 			studentData.CurentHomeWork = studentData.HomeWorkSet.Get(studentData.CurrentHomeWorkIndex);
+
+			
 			return studentData;
 		}
 
@@ -127,6 +130,10 @@ namespace StudentManager.Data
 		{
 			HomeWork homeWork = new HomeWork();
 			homeWork.Lesson = (uint)(HomeWorkSet.TotalSetCount + 1);
+			while (HomeWorkSet.Contain(homeWork.Lesson))
+			{
+				homeWork.Lesson++;
+			}
 			homeWork.DateTime = DateTime.Now;
 			if (appendErrorSet)
 			{
@@ -144,7 +151,7 @@ namespace StudentManager.Data
 			{
 
 			}
-			HomeWorkSet.AddHomeWork(homeWork);
+			homeWork.UpdateData(true);
 
 
 			CursonQuestionsData cqd = new CursonQuestionsData();
@@ -163,7 +170,15 @@ namespace StudentManager.Data
 			cqd.Status = 0;
 
 
-			SQLHelper.AddHomework(cqd);
+			if (SQLHelper.Instance.AddHomework(cqd))
+			{
+				HomeWorkSet.AddHomeWork(homeWork);
+				HomeWorkSet.UpdateDate();
+			}
+			else
+			{
+				//TODO: NOTIFY
+			}
 		}
 	}
 }

StudentManager/Editor/CheckView.xaml

@@ -58,7 +58,7 @@
 
         <ContextMenu x:Key="MyModernContextMenu" Style="{StaticResource ModernContextMenuStyle}">
             <MenuItem Header="查看详情" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Command="{Binding DataContext.RegionTo, RelativeSource={RelativeSource AncestorType=UserControl}}" CommandParameter="DetailCheckView" Style="{StaticResource ModernMenuItemStyle}"/>
-            <MenuItem Header="删除" Command="{Binding Option2Command}" Style="{StaticResource ModernMenuItemStyle}"/>
+            <MenuItem Header="删除" Command="{Binding DataContext.DeleteHomeworkCommand, RelativeSource={RelativeSource AncestorType=UserControl}}" Style="{StaticResource ModernMenuItemStyle}"/>
         </ContextMenu>
     </UserControl.Resources>
     <Grid Background="Transparent">
@@ -69,8 +69,8 @@
         </Grid.ColumnDefinitions>
         <Border CornerRadius="20"/>
 
-        <ListBox ItemsSource="{Binding StudentDatas}" ScrollViewer.VerticalScrollBarVisibility="Disabled"  BorderThickness="0"
+        <ListBox ItemsSource="{Binding StudentDatas}" ScrollViewer.VerticalScrollBarVisibility="Disabled"  BorderThickness="0" x:Name="StudentListBox"
-         SelectedItem="{Binding SelectedStudent}">
+         SelectedItem="{Binding SelectedStudent}" Loaded="StudentListBox_Loaded">
             <ListBox.Resources>
                 <Style TargetType="ListBox">
                     <Setter Property="Template">
@@ -122,8 +122,8 @@
             <i:Interaction.Triggers>
                 <i:EventTrigger EventName="SelectionChanged">
                     <i:InvokeCommandAction
-                CommandParameter="{Binding SelectedItem, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListBox}}"
+                        CommandParameter="{Binding SelectedItem, ElementName=StudentListBox}"
-                Command="{Binding DataContext.SelectedCommand ,RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"/>
+                        Command="{Binding DataContext.SelectedCommand ,ElementName=StudentListBox}"/>
                 </i:EventTrigger>
             </i:Interaction.Triggers>
 

StudentManager/Editor/CheckView.xaml.cs

@@ -45,5 +45,15 @@ namespace StudentManager.Editor
 				}
 			}
 		}
+
+		private void StudentListBox_Loaded(object sender, RoutedEventArgs e)
+		{
+			var listBox = sender as ListBox;
+			if (listBox != null)
+			{
+				listBox.SetBinding(ListBox.SelectedItemProperty, new Binding("SelectedStudent") { Source = this.DataContext });
+				listBox.SetBinding(ListBox.ItemsSourceProperty, new Binding("StudentDatas") { Source = this.DataContext });
+			}
+		}
 	}
 }

StudentManager/Editor/DetailCheckView.xaml

@@ -126,7 +126,7 @@ Padding="5" Height="150" Width="120"  IsHitTestVisible="True">
                 </ItemsControl>
             </ScrollViewer>
 
-            <Button Grid.Row="1" MinHeight=" 50"  Content="提交" Command="{Binding SubmitHomeWorkCommand}" Style="{DynamicResource MaterialDesignFlatDarkButton}"/>
+            <Button Grid.Row="1" MinHeight=" 50"  Content="提交" Command="{Binding UpdateHomeWorkCommand}" Style="{DynamicResource MaterialDesignFlatDarkButton}"/>
         </Grid>
 
     </Grid>

StudentManager/Editor/DetailView.xaml

@@ -5,6 +5,7 @@
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:StudentManager.Editor"
              xmlns:i="http://schemas.microsoft.com/xaml/behaviors"
+             xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
              mc:Ignorable="d" 
              d:DesignHeight="450" d:DesignWidth="800">
 
@@ -24,6 +25,7 @@
 
 
         <ListBox ItemsSource="{Binding StudentDatas}" ScrollViewer.VerticalScrollBarVisibility="Disabled"  BorderThickness="0" 
+                 x:Name="StudentListBox" SelectedIndex="0" Loaded="StudentListBox_Loaded"
                  SelectedItem="{Binding SelectedStudent}">
             <ListBox.Resources>
                 <Style TargetType="ListBox">
@@ -76,8 +78,8 @@
             <i:Interaction.Triggers>
                 <i:EventTrigger EventName="SelectionChanged">
                     <i:InvokeCommandAction
-                        CommandParameter="{Binding SelectedItem, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListBox}}"
+                        CommandParameter="{Binding SelectedItem, ElementName=StudentListBox}"
-                        Command="{Binding DataContext.SelectedCommand ,RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"/>
+                        Command="{Binding DataContext.SelectedCommand ,ElementName=StudentListBox}"/>
                 </i:EventTrigger>
             </i:Interaction.Triggers>
 
@@ -140,13 +142,58 @@
             </Border>
 
             <Grid Grid.Row="1">
-                <Border Background="#FF666666" Margin="5" Grid.RowSpan="2" Grid.ColumnSpan="2" CornerRadius="10"/>
+
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition/>
                     <ColumnDefinition/>
                 </Grid.ColumnDefinitions>
 
+                <Border Margin="10" CornerRadius="10" Background="LightBlue">
+                    <Grid>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width=".4*"/>
+                            <ColumnDefinition/>
+                        </Grid.ColumnDefinitions>
+                        <StackPanel Margin="10" >
+                            <TextBlock Text="错题集总数量" FontWeight="Bold"
+                                       FontSize="16" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+
+                        </StackPanel>
+                        <StackPanel Grid.Column="1" Margin="20,10,60,10">
+
+                            <DockPanel LastChildFill="False">
+                                <TextBlock Margin="5" Text="总数量" />
+                                <TextBlock Margin="5" DockPanel.Dock="Right" Text="{Binding SelectedStudent.ErrorSet.TotalCount}"/>
+                            </DockPanel>
+
+                            <DockPanel LastChildFill="False">
+                                <TextBlock Margin="5" Text="正确数量"/>
+                                <TextBlock Margin="5" DockPanel.Dock="Right" Text="{Binding SelectedStudent.ErrorSet.CorrectCount}"/>
+                            </DockPanel>
+
+                            <DockPanel LastChildFill="False">
+                                <TextBlock Margin="5" Text="错误数量"/>
+                                <TextBlock Margin="5" DockPanel.Dock="Right" Text="{Binding SelectedStudent.ErrorSet.ErrorCount}"/>
+                            </DockPanel>
+
+                        </StackPanel>
                     </Grid>
+                </Border>
+
+                <Border Grid.Column="1">
+                    <lvc:CartesianChart Series="{Binding SeriesCollection}" LegendLocation="Top">
+                        <lvc:CartesianChart.AxisX>
+                            <lvc:Axis Title="Time" Labels="{Binding Labels}"></lvc:Axis>
+                        </lvc:CartesianChart.AxisX>
+                        <lvc:CartesianChart.AxisY>
+                            <lvc:Axis Title="Values"></lvc:Axis>
+                        </lvc:CartesianChart.AxisY>
+                    </lvc:CartesianChart>
+                </Border>
+
+            </Grid>
+
+
             <Grid Grid.Row="2">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="0.5*"/>
@@ -214,14 +261,14 @@
                                                     <TextBlock TextWrapping="Wrap" FontSize="12" Text="状态" Margin="5" Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                                     <TextBlock TextWrapping="Wrap" FontSize="18" Margin="5"
-                                               Text="{Binding TotalUseCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                               Text="{Binding Status}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                                 </StackPanel>
 
                                                 <StackPanel Grid.Column="1" Orientation="Vertical">
                                                     <TextBlock TextWrapping="Wrap" FontSize="12" Text="正确数" Margin="5" Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                                     <TextBlock TextWrapping="Wrap" FontSize="18" Margin="5"
-                                               Text="{Binding ErrorCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                               Text="{Binding CorrectCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                                 </StackPanel>
                                             </Grid>
                                         </StackPanel>

StudentManager/Editor/DetailView.xaml.cs

@@ -35,5 +35,15 @@ namespace StudentManager.Editor
 		{
 
 		}
+
+		private void StudentListBox_Loaded(object sender, RoutedEventArgs e)
+		{
+			var listBox = sender as ListBox;
+			if (listBox != null)
+			{
+				listBox.SetBinding(ListBox.SelectedItemProperty, new Binding("SelectedStudent") { Source = this.DataContext });
+				listBox.SetBinding(ListBox.ItemsSourceProperty, new Binding("StudentDatas") { Source = this.DataContext });
+			}
+		}
     }
 }

StudentManager/Editor/StudentsView.xaml

@@ -59,7 +59,6 @@
 
         <ContextMenu x:Key="MyModernContextMenu" Style="{StaticResource ModernContextMenuStyle}">
             <MenuItem Header="查看详情" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Command="{Binding DataContext.RegionTo, RelativeSource={RelativeSource AncestorType=UserControl}}" CommandParameter="DetailView" Style="{StaticResource ModernMenuItemStyle}"/>
-            <MenuItem Header="删除" Command="{Binding Option2Command}" Style="{StaticResource ModernMenuItemStyle}"/>
         </ContextMenu>
     </UserControl.Resources>
     <Grid Background="Transparent">
@@ -75,7 +74,7 @@
                 <ItemsControl.ItemTemplate>
                     <DataTemplate>
                         <Border Background="#FFFEFEFE" BorderBrush="Gray" BorderThickness="0" CornerRadius="10" 
-                                Padding="5" Height="200" Width="120" Margin="5" IsHitTestVisible="True" MouseRightButtonDown="Border_MouseRightButtonDown">
+                                Padding="5" Height="240" Width="120" Margin="5" IsHitTestVisible="True" MouseRightButtonDown="Border_MouseRightButtonDown">
                             <i:Interaction.Triggers>
                                 <i:EventTrigger EventName="MouseEnter">
                                     <i:ChangePropertyAction PropertyName="Background" Value="#FFFEFEFE"/>
@@ -98,34 +97,41 @@
                                            VerticalAlignment="Center" HorizontalAlignment="Left" Padding="10,10"/>
                                 <StackPanel Orientation="Horizontal">
                                     <StackPanel Orientation="Vertical">
-                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="总数" Margin="5" Foreground="Gray"
+                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="错误总数" Margin="5" Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                         <TextBlock TextWrapping="Wrap" FontSize="18" Margin="5"
                                                Text="{Binding ErrorSet.TotalCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                     </StackPanel>
 
                                     <StackPanel Orientation="Vertical">
-                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="总数" Margin="5" Foreground="Gray"
+                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="修正总数" Margin="5" Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                         <TextBlock TextWrapping="Wrap" FontSize="18" Margin="5"
-                                               Text="{Binding ErrorSet.TotalCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                               Text="{Binding ErrorSet.CorrectCount}" VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                     </StackPanel>
                                 </StackPanel>
                                 <Border BorderBrush="Gray" BorderThickness="0,0.5,0,0" Margin="5"/>
+                                <StackPanel Orientation="Vertical" >
+
+                                    <TextBlock TextWrapping="Wrap" FontSize="12" Text="作业次数"  Margin="5"  Foreground="Gray"
+                                               VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                    <TextBlock TextWrapping="Wrap" FontSize="18" Text="{Binding HomeWorkSet.TotalSetCount}"  Margin="5" 
+                                               VerticalAlignment="Center" HorizontalAlignment="Left"/>
+                                </StackPanel>
                                 <StackPanel Orientation="Horizontal">
                                     <StackPanel Orientation="Vertical">
 
-                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="正确数"  Margin="5"  Foreground="Gray"
+                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="总题数"  Margin="5"  Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
-                                        <TextBlock TextWrapping="Wrap" FontSize="18" Text="{Binding ErrorSet.CorrectCount}"  Margin="5" 
+                                        <TextBlock TextWrapping="Wrap" FontSize="18" Text="{Binding HomeWorkSet.TotalQuestionCount}"  Margin="5" 
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                     </StackPanel>
 
                                     <StackPanel Orientation="Vertical">
 
-                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="正确数"  Margin="5"  Foreground="Gray"
+                                        <TextBlock TextWrapping="Wrap" FontSize="12" Text="总错题数"  Margin="5"  Foreground="Gray"
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
-                                        <TextBlock TextWrapping="Wrap" FontSize="18" Text="{Binding ErrorSet.CorrectCount}"  Margin="5" 
+                                        <TextBlock TextWrapping="Wrap" FontSize="18" Text="{Binding HomeWorkSet.TotalErrorQuestionCount}"  Margin="5" 
                                                VerticalAlignment="Center" HorizontalAlignment="Left"/>
                                     </StackPanel>
                                 </StackPanel>

StudentManager/Interface/Singleton.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StudentManager.Interface
+{
+	public class Singleton<T> where T : class, new()
+	{
+		private static readonly Lazy<T> instance = new Lazy<T>(() => new T());
+
+		public Singleton() { }
+
+		public static T Instance
+		{
+			get
+			{
+				return instance.Value;
+			}
+		}
+	}
+
+}

StudentManager/Model/Students.cs

@@ -1,4 +1,6 @@
 using DryIoc.ImTools;
+using LiveCharts;
+using LiveCharts.Wpf;
 using Mysqlx.Crud;
 using Newtonsoft.Json;
 using Org.BouncyCastle.Utilities;
@@ -55,7 +57,7 @@ namespace StudentManager.Model
 	{
 
 		private ObservableCollection<StudentInfo> studentDatas = new ObservableCollection<StudentInfo>();
-		public ReadOnlyObservableCollection<StudentInfo> StudentDatas { get; private set; }
+		public ObservableCollection<StudentInfo> StudentDatas { get { return studentDatas; } private set { studentDatas = value; RaisePropertyChanged(); } }
 
 		private ObservableCollection<QuestionData> questionDatas = new ObservableCollection<QuestionData>();
 		public ObservableCollection<QuestionData> QuestionDatas { get { return questionDatas; } private set { questionDatas = value; RaisePropertyChanged(); } }
@@ -193,6 +195,19 @@ namespace StudentManager.Model
 
 
 
+		public SeriesCollection seriesCollection;
+		public SeriesCollection SeriesCollection
+		{
+			get { return seriesCollection; }
+			set { seriesCollection = value; RaisePropertyChanged(); }
+		}
+
+		public List<string> labels;
+		public List<string> Labels
+		{
+			get { return labels; }
+			set { labels = value; RaisePropertyChanged(); }
+		}
 
 		private readonly IRegionManager regionManager;
 
@@ -206,7 +221,8 @@ namespace StudentManager.Model
 		public DelegateCommand<QuestionData> RemoveNewColumnCommand { get; set; }
 		public DelegateCommand<QuestionData> SelectedQuestionChangedCommand { get; set; }
 		public DelegateCommand RegionToDetailCommand { get; set; }
-		public DelegateCommand SubmitHomeWorkCommand { get; set; }
+		public DelegateCommand UpdateHomeWorkCommand { get; set; }
+		public DelegateCommand DeleteHomeworkCommand { get; set; }
 		public DelegateCommand AddNewColumnCommand { get; set; }
 		public DelegateCommand SubmitAddQuestionsCommand { get; set; }
 		public DelegateCommand ClearnAddQuestionsCommand { get; set; }
@@ -232,19 +248,21 @@ namespace StudentManager.Model
 				RegionToStudents();
 			});
 
-			SubmitHomeWorkCommand = new DelegateCommand(() => SubmitHomeWork());
+			UpdateHomeWorkCommand = new DelegateCommand(() => UpdateHomeWork());
 
 			SelectedCommand = new DelegateCommand<StudentInfo>((x) =>
 			{
 				if (x == null) return;
 				SelectedStudent = x;
+
+				UpdateGird();
 				RegionToDetailView();
 			});
 
 			HomeWorkSetSelectedCommand = new DelegateCommand<DetailHomeWorkSetInfo>((x) =>
 			{
-				if (x == null) return;
+				if (x == null || SelectedStudent == null) return;
-				selectedHomeWorkSet = x;
+				SelectedHomeWorkSet = x;
 				HomeWork = SelectedStudent.HomeWorkSet.GetDetailHomeWorkList(SelectedHomeWorkSet.Lesson);
 			});
 
@@ -271,7 +289,7 @@ namespace StudentManager.Model
 				if (c != MessageBoxResult.OK) return;
 				QuestionLib.Update(SelectedQuestion);
 				SelectedQuestion.UpdateTime = DateTime.Now;
-				SQLHelper.UpdateQuestion(SelectedQuestion);
+				SQLHelper.Instance.UpdateQuestion(SelectedQuestion);
 			});
 
 			ShowContextMenuCommand = new DelegateCommand<MouseButtonEventArgs>((e) =>
@@ -315,13 +333,43 @@ namespace StudentManager.Model
 				ADDQuestionDatas.Clear();
 			});
 
-			SaveAllCommand = new DelegateCommand(() => FileSystem.SaveAll());
+			SaveAllCommand = new DelegateCommand(() => FileSystem.Instance.SaveAll());
-			FreshAllCommand = new DelegateCommand(() => FileSystem.FreashAllInfo());
+			FreshAllCommand = new DelegateCommand(() =>
+			{
+				FileSystem.Instance.FreashAllInfo();
+				Reload();
+			});
 			PublicHomeWorkCommand = new DelegateCommand(() =>
 			{
-				HomeWorkManager.PublicHomework(PublicLesson, IsAddPublicQuestionsLib, isNeedErrorset);
+				HomeWorkManager.Instance.PublicHomework(PublicLesson, IsAddPublicQuestionsLib, isNeedErrorset);
 			});
 
+
+			DeleteHomeworkCommand = new DelegateCommand(() =>
+			{
+
+				var cq = new CursonQuestionsData { Lesson = SelectedHomeWorkSet.Lesson, UID = SelectedStudent.UID };
+				
+				if(!SQLHelper.Instance.Delete(cq))
+				{
+					//TODO: NOTIFY:
+					return;
+				}
+
+				if (SelectedHomeWorkSet != null && SelectedStudent != null)
+					SelectedStudent.HomeWorkSet.DeleteHomework(SelectedHomeWorkSet.Lesson);
+
+				if (SelectedStudent != null)
+				{
+					HomeWorkSet = SelectedStudent.HomeWorkSet.GetDetailHomeWorkSetList();
+					SelectedStudent.HomeWorkSet.UpdateDate();
+				}
+
+
+
+			});
+
+
 			SubmitAddQuestionsCommand = new DelegateCommand(() =>
 			{
 
@@ -348,19 +396,43 @@ namespace StudentManager.Model
 
 			Load();
 
-			StudentDatas = new ReadOnlyObservableCollection<StudentInfo>(studentDatas);
+			StudentDatas = new ObservableCollection<StudentInfo>(studentDatas);
 			QuestionDatas = new ObservableCollection<QuestionData>(questionDatas);
 			ErrorSetDatas = new ObservableCollection<DetailErrorInfo>(errorSetDatas);
 			MenuBars = new ReadOnlyObservableCollection<MenuBar>(menuBars);
 			HomeWorkSet = new ObservableCollection<DetailHomeWorkSetInfo>(homeWorkSet);
 
 
-
+			UpdateGird();
 
 			this.regionManager = regionManager;
 
 		}
 
+		private void UpdateGird()
+		{
+			if(SelectedStudent == null) return;
+
+			SelectedStudent.HomeWorkSet.UpdateDataView();
+
+			SeriesCollection = new SeriesCollection
+			{
+				new LineSeries
+				{
+					Title = "错题数量",
+					Values = SelectedStudent.HomeWorkSet.ErrorCounts,
+				},
+				new LineSeries
+				{
+					Title = "正确数量",
+					Values = SelectedStudent.HomeWorkSet.CorrectCounts,
+				}
+			};
+
+			Labels = SelectedStudent.HomeWorkSet.Lessons;
+		}
+	
+
 		private int ConvertToHashInt(string item)
 		{
 			var hash = SHA256.Create();
@@ -368,7 +440,9 @@ namespace StudentManager.Model
 			return BitConverter.ToInt32(result, 0);
 		}
 
-		private void SubmitHomeWork()
+
+
+		private void UpdateHomeWork()
 		{
 			// update error set and local homework
 			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Questions.ForEach(x =>
@@ -377,15 +451,14 @@ namespace StudentManager.Model
 				{
 					x.Status = HomeWork.FirstOrDefault(hw => hw.PID == x.ID).Status;
 					SelectedStudent.ErrorSet.AddQuestion(x);
-					SQLHelper.UpdateErrorSet(SelectedStudent.UID, x.ID, x.Status);
+					ErrorBase error = SelectedStudent.ErrorSet.Get(x.ID) ?? new ErrorBase {  QuestionBase = new QuestionBase { ID = x.ID, Status = x.Status} };
+					SQLHelper.Instance.UpdateErrorSet(SelectedStudent.UID, error);
 				}
 
 			});
 			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).UpdateData();
-
+			SelectedStudent.HomeWorkSet.UpdateDate();
-			ErrorSet = SelectedStudent.ErrorSet.GetDetailErrorSetInfo();
+			SQLHelper.Instance.UpdateErrorSetUserInfo(SelectedStudent.UID, (uint)SelectedStudent.ErrorSet.TotalCount, (uint)SelectedStudent.ErrorSet.CorrectCount);
-			ErrorSetDatas = SelectedStudent.ErrorSet.GetDetailErrorQuestionList();
-
 			// update homework other info and online info
 			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Status = true;
 			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).DateTime = DateTime.Now;
@@ -397,7 +470,7 @@ namespace StudentManager.Model
 				if (x.Status != false) correctHomeworkArray.Add(x.ID);
 
 			});
-			SQLHelper.UpdateHomework(SelectedStudent.UID, SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Lesson,
+			SQLHelper.Instance.UpdateHomework(SelectedStudent.UID, SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Lesson,
 				JsonConvert.SerializeObject(totalHomeworkArray),
 				JsonConvert.SerializeObject(correctHomeworkArray), SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).DateTime,
 				SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Status);
@@ -415,7 +488,7 @@ namespace StudentManager.Model
 		private void RegionToDetailView()
 		{
 			if (selectedStudent == null) return;
-			ErrorSet = selectedStudent.ErrorSet.GetDetailErrorSetInfo();
+			ErrorSetDatas = selectedStudent.ErrorSet.GetDetailErrorQuestionList();
 			HomeWorkSet = selectedStudent.HomeWorkSet.GetDetailHomeWorkSetList();
 		}
 
@@ -451,8 +524,8 @@ namespace StudentManager.Model
 		{
 			studentDatas.Clear();
 			questionDatas.Clear();
-			studentDatas = StudentLib.GetAllStudents();
+			StudentDatas = StudentLib.GetAllStudents();
-			questionDatas = QuestionLib.GetAllQuestion();
+			QuestionDatas = QuestionLib.GetAllQuestion();
 		}
 
 

StudentManager/StudentManager.csproj

@@ -10,14 +10,13 @@
 
   <ItemGroup>
     <PackageReference Include="Extended.Wpf.Toolkit" Version="4.6.1" />
+    <PackageReference Include="LiveCharts" Version="0.9.7" />
+    <PackageReference Include="LiveCharts.Wpf" Version="0.9.7" />
     <PackageReference Include="MaterialDesignThemes" Version="5.1.0" />
+    <PackageReference Include="MyNet.Wpf.LiveCharts" Version="6.0.0" />
     <PackageReference Include="MySql.Data" Version="9.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="Prism.DryIoc" Version="9.0.537" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="Interface\" />
-  </ItemGroup>
-
 </Project>