Online

StudentManager/Common/ErrorSet.cs

@@ -149,7 +149,7 @@ namespace StudentManager.Common
 			if (id.QuestionBase.Status == false || ErrorArray.Contains(id.QuestionBase.ID)) return;
 
 
-			if ((id.CorrectCount - id.CorrectCount) <= CorrectThresholds)
+			if ((id.CorrectCount - id.ErrorCount) <= CorrectThresholds)
 			{
 				id.QuestionBase.Status = false;
 				CorrectArray.Remove(id.QuestionBase.ID);
@@ -162,7 +162,7 @@ namespace StudentManager.Common
 			if (id.QuestionBase.Status == true || CorrectArray.Contains(id.QuestionBase.ID)) return;
 
 
-			if ((id.CorrectCount - id.CorrectCount) > CorrectThresholds)
+			if ((id.CorrectCount - id.ErrorCount) > CorrectThresholds)
 			{
 				id.QuestionBase.Status = true;
 				ErrorArray.Remove(id.QuestionBase.ID);
@@ -175,11 +175,11 @@ namespace StudentManager.Common
 			AddCorrectQuestion(new QuestionBase { ID = question.Id });
 		}
 
-		public void QueryErrorSet(int id)
+		public void QueryErrorSet(long id)
 		{
 			Errores.Clear();
 
-			SQLHelper.Query<UserQuestionData>(Tables.UQTable, id).ForEach(x =>
+			SQLHelper.Query<UserQuestionData>(id).ForEach(x =>
 			{
 				AddQuestion(new QuestionBase { ID = x.PID, Status = x.Status });
 			});

StudentManager/Common/FileSystem.cs

@@ -0,0 +1,18 @@
+using StudentManager.Data;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StudentManager.Common
+{
+	public static class FileSystem
+	{
+		public static void SaveAll()
+		{
+			StudentLib.Save();
+			QuestionLib.Save();
+		}
+	}
+}

StudentManager/Common/HomeWorkSet.cs

@@ -215,11 +215,11 @@ namespace StudentManager.Common
 			return works;
 		}
 
-		public void FreshAllHomeWork(int id)
+		public void FreshAllHomeWork(long id)
 		{
 			HomeWorks.Clear();
 
-			SQLHelper.Query<CursonQuestionsData>(Tables.CQTable, id).ForEach(x =>
+			SQLHelper.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) }));

StudentManager/Common/SQLHelper.cs

@@ -1,14 +1,12 @@
 using DryIoc.ImTools;
+using Google.Protobuf.WellKnownTypes;
 using MySql.Data.MySqlClient;
 using Newtonsoft.Json;
-using StudentManager.Common;
 using StudentManager.Data;
-using System;
-using System.Collections.Generic;
 using System.Diagnostics;
-using System.Linq;
+using System;
-using System.Text;
+using Enum = System.Enum;
-using System.Threading.Tasks;
+using System.Security.Cryptography;
 
 namespace StudentManager.Common
 {
@@ -32,7 +30,7 @@ namespace StudentManager.Common
 		{
 			if (typeof(T) == typeof(StudentData))
 			{
-				(data as StudentData).UID = (int)reader[0];
+				(data as StudentData).UID = (long)reader[0];
 				(data as StudentData).Name = reader[1].ToString();
 				(data as StudentData).Gender = reader[2].ToString();
 				(data as StudentData).Contact = reader[3].ToString();
@@ -40,14 +38,20 @@ namespace StudentManager.Common
 				(data as StudentData).Grade = (byte)reader[5];
 				(data as StudentData).TotalsQuestions = (UInt16)reader[6];
 				(data as StudentData).CorrectionCount = (UInt16)reader[7];
-				(data as StudentData).HomeWork = (UInt16)reader[8];
+				(data as StudentData).CurronHomeWorkIndex = (UInt16)reader[8];
+				(data as StudentData).Password = reader[9].ToString();
+				(data as StudentData).Birthdate = (DateTime)reader[10];
+				(data as StudentData).HWQTotalCount = (uint)reader[11];
+				(data as StudentData).HWQTotalErrorCount = (uint)reader[12];
 			}
 			else if (typeof(T) == typeof(QuestionData))
 			{
 				DifficultyLevel dLevel = DifficultyLevel.easy;
 				QStatus qStatus = QStatus.published;
+				QType qType = QType.填空题;
 				(data as QuestionData).Id = (int)reader[0];
-				(data as QuestionData).Type = reader[1].ToString();
+				Enum.TryParse(reader[1].ToString(), true, out qType);
+				(data as QuestionData).Type = qType;
 				(data as QuestionData).Stem = reader[2].ToString();
 				(data as QuestionData).Answer = reader[3].ToString();
 				Enum.TryParse(reader[4].ToString(), true, out dLevel);
@@ -98,6 +102,14 @@ namespace StudentManager.Common
 
 	public static class SQLHelper
 	{
+		private static Dictionary<System.Type, string> TypeMap = new Dictionary<System.Type, string>
+		{
+			{ typeof(QuestionData), "questions" },
+			{ typeof(CursonQuestionsData), "curson_questions" },
+			{ typeof(StudentData), "users" },
+			{ typeof(UserQuestionData), "user_data" },
+		};
+
 		static string config = "server=8.137.125.29;port=3306;user=StudentManager;password=wangxin55;database=studentmanager";
 		static MySqlConnection connection = null;
 		static MySqlCommand cmd = null;
@@ -105,8 +117,11 @@ namespace StudentManager.Common
 		// update ** set ** = '**',... where ** = **;
 		// insert into ** values('**','**'...);
 		// delete from ** where ** = **;
-		public static List<T> Query<T>(string tableName, int id = -1, params string[] queryParams) where T : IDataCommon, new()
+		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);
 
 			List<T> result = new List<T>();
@@ -121,13 +136,13 @@ namespace StudentManager.Common
 					string filedList = string.Join(",", queryParams);
 					queryStr = $"select {filedList} from {tableName};";
 
-					if (id != -1)
+					if (id != 9999999)
 						queryStr = $@"select {filedList} from {tableName} WHERE {idName} = {id};";
 				}
 				else
 				{
 					queryStr = $"select * from {tableName};";
-					if (id != -1) 
+					if (id != 9999999)
 						queryStr = $@"select * from {tableName} WHERE {idName} = {id};";
 				}
 
@@ -157,7 +172,7 @@ namespace StudentManager.Common
 			}
 		}
 
-		public static List<T> UnionQuery<T>(int id = -1, string tableName = "questions", string otherTable = "user_data") where T : IDataCommon, new()
+		public static List<T> UnionQuery<T>(int id = 9999999, string tableName = "questions", string otherTable = "user_data") where T : IDataCommon, new()
 		{
 			connection = new MySqlConnection(config);
 
@@ -165,9 +180,9 @@ namespace StudentManager.Common
 
 			try
 			{
-				connection.Open();
+				connection = new MySqlConnection(config);
 				string queryStr = "";
-				if(id ==  -1)
+				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}";
@@ -198,10 +213,39 @@ namespace StudentManager.Common
 			}
 		}
 
-		public static void Add()
+
+		public static void Add<T>(T value)
 		{
+			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} " +
+			 $"(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)";
+
+					MySqlCommand cmd = new MySqlCommand(sql, connection);
+					cmd.Parameters.AddWithValue("@Id", ques.Id);
+					cmd.Parameters.AddWithValue("@Type", ques.Type.ToString());
+					cmd.Parameters.AddWithValue("@Stem", ques.Stem);
+					cmd.Parameters.AddWithValue("@Answer", ques.Answer);
+					cmd.Parameters.AddWithValue("@DifficultyLevel", ques.DifficultyLevel.ToString());
+					cmd.Parameters.AddWithValue("@Category", ques.Category);
+					cmd.Parameters.AddWithValue("@Tags", ques.Tags);
+					cmd.Parameters.AddWithValue("@Source", ques.Source);
+					cmd.Parameters.AddWithValue("@Lesson", ques.Lesson);
+					cmd.Parameters.AddWithValue("@Status", ques.Status.ToString());
+
+					cmd.ExecuteNonQuery();
+
+				}
+				//string sql = $"insert into {stableName}"
 			}
 			catch (Exception ex)
 			{
@@ -209,7 +253,100 @@ namespace StudentManager.Common
 			}
 			finally
 			{
+				cmd.Dispose();
+				connection.Close();
+			}
+		}
 
+		internal static void UpdateErrorSet(long UID, int PID, bool status)
+		{
+			using (MySqlConnection connection = new MySqlConnection(config))
+			{
+				try
+				{
+					connection.Open();
+
+					// 检查记录是否存在
+					string checkQuery = "SELECT COUNT(*) FROM user_data WHERE user_id = @user_id AND problem_id = @problem_id";
+					using (MySqlCommand checkCmd = new MySqlCommand(checkQuery, connection))
+					{
+						checkCmd.Parameters.AddWithValue("@user_id", UID);
+						checkCmd.Parameters.AddWithValue("@problem_id", PID);
+
+						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";
+							using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
+							{
+								updateCmd.Parameters.AddWithValue("@user_id", UID);
+								updateCmd.Parameters.AddWithValue("@problem_id", PID);
+								updateCmd.Parameters.AddWithValue("@status", status);
+
+								updateCmd.ExecuteNonQuery();
+							}
+						}
+						else
+						{
+							if (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.ExecuteNonQuery();
+								}
+							}
+						}
+					}
+				}
+				catch (Exception ex)
+				{
+					Console.WriteLine(ex.Message);
+				}
+				finally
+				{
+					connection.Close();
+				}
+			}
+		}
+
+		internal static void UpdateHomework(long UID, int lesson, string totalArray, string correctArray, DateTime dateTime, bool status)
+		{
+			using (MySqlConnection connection = new MySqlConnection(config))
+			{
+				try
+				{
+					connection.Open();
+
+					string updateQuery = "UPDATE curson_questions SET status = @status, problem_ids = @problem_ids, " +
+										 "correct_ids = @correct_ids, update_time = @update_time WHERE user_id = @user_id AND lesson = @lesson";
+					using (MySqlCommand updateCmd = new MySqlCommand(updateQuery, connection))
+					{
+						updateCmd.Parameters.AddWithValue("@user_id", UID);
+						updateCmd.Parameters.AddWithValue("@lesson", lesson);
+						updateCmd.Parameters.AddWithValue("@status", status);
+						updateCmd.Parameters.AddWithValue("@problem_ids", totalArray);
+						updateCmd.Parameters.AddWithValue("@correct_ids", correctArray);
+						updateCmd.Parameters.AddWithValue("@update_time", dateTime);
+
+						updateCmd.ExecuteNonQuery();
+					}
+
+
+				}
+				catch (Exception ex)
+				{
+					Console.WriteLine(ex.Message);
+				}
+				finally
+				{
+					connection.Close();
+				}
 			}
 		}
 	}

StudentManager/Data/QuestionData.cs

@@ -31,12 +31,12 @@ namespace StudentManager.Data
 	public class QuestionData : IDataCommon
 	{
 		public int Id { get; set; } = 0;
-		public string Type { get; set; } = string.Empty;
+		public QType Type { get; set; } = QType.填空题;
 		public string Stem { get; set; } = string.Empty;
 		public string Answer { get; set; } = String.Empty;
 		public DifficultyLevel DifficultyLevel { get; set; } = DifficultyLevel.easy;
 		public string Category { get; set; } = string.Empty;
-		public string Tags { get; set; } = string.Empty;
+		public string Tags { get; set; } = "默认";
 		public string Source { get; set; } = string.Empty;
 		public int Lesson { get; set; } = 0;
 		public QStatus Status { get; set; } = QStatus.published;

StudentManager/Data/QuestionLib.cs

@@ -39,7 +39,7 @@ namespace StudentManager.Data
 
 		public static void FreshAllQuestion()
 		{
-			SQLHelper.Query<QuestionData>(Tables.QuesTable).ForEach(x => QuestionDic.Add(x.Id, x));
+			SQLHelper.Query<QuestionData>().ForEach(x => QuestionDic.Add(x.Id, x));
 		}
 
 		public static ObservableCollection<QuestionData> GetAllQuestion()
@@ -62,6 +62,7 @@ namespace StudentManager.Data
 		public static void Add(QuestionData question)
 		{
 			QuestionDic.Add(question.Id, question);
+			SQLHelper.Add(question);
 		}
 
 		public static void Remove(QuestionData question)

StudentManager/Data/StudentData.cs

@@ -6,24 +6,41 @@ using System.Threading.Tasks;
 
 namespace StudentManager.Data
 {
+	public enum Gender
+	{
+		男,
+		女,
+	}
 	public class StudentData : IDataCommon
 	{
-		public int UID { get; set; } = 1;
+		// Count info
+		public long UID { get; set; } = 1;
+		public string Password { get; set; } = "123456";
+
+		// Base info
 		public string Name { get; set; } = "Name";
 		public string Gender {  get; set; } = "Gender";
 		public string Contact { get; set; } = "Contact";
 		public string Address { get; set; } = "Address";
 		public int Grade { get; set; } = 1;
+		public DateTime Birthdate { get; set; } = DateTime.Now;
+
+		// Error Set
 		public int TotalsQuestions { get; set; } = 0;
 		public int CorrectionCount { get; set; } = 0;
-		public int HomeWork { get; set; } = 0;
 
+		// HomeWork
+		public int CurronHomeWorkIndex { get; set; } = 0;
+
+		// HomeWorkSet
+		public uint HWQTotalCount { get; set; } = 0;  
+		public uint HWQTotalErrorCount { get; set; } = 0;
+
+
+		// Extension
 		public float ErrorRate { get; set; } = 0;
 		public float CorrectRate { get; set; } = 0;
 		public int UnCorrectCount { get; set; } = 0;
 
-
-
-		//public string TableName { get => "users"; set => throw new NotImplementedException(); }
 	}
 }

StudentManager/Data/StudentInfo.cs

@@ -16,7 +16,7 @@ namespace StudentManager.Data
 	{
 		public static string LibPath = $"{Environment.GetFolderPath(Environment.SpecialFolder.Desktop)}\\FileLib\\";
 		public static string FileName = "studentLib.dbsi";
-		public static Dictionary<int, StudentInfo> StudentDic { get; set; } = new Dictionary<int, StudentInfo>();
+		public static Dictionary<long, StudentInfo> StudentDic { get; set; } = new Dictionary<long, StudentInfo>();
 
 		public static void Add(StudentInfo studentInfo)
 		{
@@ -30,7 +30,7 @@ namespace StudentManager.Data
 
 			Debug.Assert(Path.Exists(LibPath));
 			string file = File.ReadAllText(LibPath + FileName);
-			StudentDic = JsonSerializer.Deserialize<Dictionary<int, StudentInfo>>(file);
+			StudentDic = JsonSerializer.Deserialize<Dictionary<long, StudentInfo>>(file);
 		}
 
 		public static void Save()
@@ -43,7 +43,7 @@ namespace StudentManager.Data
 		{
 			StudentDic.Clear();
 
-			SQLHelper.Query<StudentData>(Tables.UserTable).ForEach(x =>
+			SQLHelper.Query<StudentData>().ForEach(x =>
 			StudentDic.Add(x.UID, new StudentInfo
 			{
 				UID = x.UID,
@@ -51,7 +51,7 @@ namespace StudentManager.Data
 				Address = x.Address,
 				Contact = x.Contact,
 				Grade = x.Grade,
-				CurrentHomeWorkIndex = x.HomeWork,
+				CurrentHomeWorkIndex = x.CurronHomeWorkIndex,
 			}));
 
             foreach (var item in StudentDic)
@@ -70,12 +70,12 @@ namespace StudentManager.Data
 			return list;
 		}
 
-		public static StudentInfo QueryStudentDetailInfo(int uid)
+		public static StudentInfo QueryStudentDetailInfo(long uid)
 		{
 			return GetStudentDetailInfo(Get(uid));
 		}
 
-		public static StudentInfo Get(int uid)
+		public static StudentInfo Get(long uid)
 		{
 			if (!StudentDic.ContainsKey(uid)) return null;
 			return StudentDic[uid];
@@ -86,7 +86,7 @@ namespace StudentManager.Data
 			StudentDic.Remove(studentInfo.UID);
 		}
 
-		public static void Remove(int id)
+		public static void Remove(long id)
 		{
 			StudentDic.Remove(id);
 		}
@@ -108,7 +108,7 @@ namespace StudentManager.Data
 
 	public class StudentInfo
 	{
-		public int UID { get; set; } = 1;
+		public long UID { get; set; } = 1;
 		public string Name { get; set; } = "Name";
 		public string Gender { get; set; } = "Gender";
 		public string Contact { get; set; } = "Contact";

StudentManager/Editor/AddQuestionView.xaml

@@ -55,7 +55,7 @@
                         <GridViewColumn Header="类型">
                             <GridViewColumn.CellTemplate>
                                 <DataTemplate>
-                                    <ComboBox SelectedIndex="0" ItemsSource="{Binding Source={StaticResource TypeEnumValues}}"/>
+                                    <ComboBox SelectedItem="{Binding Type, Mode=TwoWay}" ItemsSource="{Binding Source={StaticResource TypeEnumValues}}"/>
                                 </DataTemplate>
                             </GridViewColumn.CellTemplate>
                         </GridViewColumn>
@@ -76,7 +76,7 @@
                         <GridViewColumn Header="难度">
                             <GridViewColumn.CellTemplate>
                                 <DataTemplate>
-                                    <ComboBox SelectedIndex="0" ItemsSource="{Binding Source={StaticResource DifficultyEnumValues}}"/>
+                                    <ComboBox SelectedItem="{Binding DifficultyLevel, Mode=TwoWay}" ItemsSource="{Binding Source={StaticResource DifficultyEnumValues}}"/>
                                 </DataTemplate>
                             </GridViewColumn.CellTemplate>
                         </GridViewColumn>
@@ -97,7 +97,7 @@
                         <GridViewColumn Header="状态">
                             <GridViewColumn.CellTemplate>
                                 <DataTemplate>
-                                    <ComboBox SelectedIndex="0" ItemsSource="{Binding Source={StaticResource PublishEnumValues}}"/>
+                                    <ComboBox SelectedItem="{Binding Status, Mode=TwoWay}" ItemsSource="{Binding Source={StaticResource PublishEnumValues}}"/>
                                 </DataTemplate>
                             </GridViewColumn.CellTemplate>
                         </GridViewColumn>
@@ -124,14 +124,16 @@
                                     <StackPanel>
 
                                         <Button Content="删除" Style="{StaticResource MaterialDesignFlatButton}" Padding="5" Foreground="White"
-                Command="{Binding DataContext.RemoveNewColumnCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"/>
+                />
                                     </StackPanel>
                                 </DataTemplate>
                             </GridViewColumn.HeaderTemplate>
                             <GridViewColumn.CellTemplate>
                                 <DataTemplate>
                                     <Button Content="删除" Style="{StaticResource MaterialDesignFlatButton}" Padding="5"
-                Command="{Binding DataContext.RemoveNewColumnCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"/>
+                                           
+                Command="{Binding DataContext.RemoveNewColumnCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"
+                                            CommandParameter="{Binding}"/>
                                 </DataTemplate>
                             </GridViewColumn.CellTemplate>
                         </GridViewColumn>

StudentManager/Editor/MainEditor.xaml

@@ -21,8 +21,8 @@
         </Grid.ColumnDefinitions>
 
 
-            
+        <DockPanel LastChildFill="False">
-        <ItemsControl ItemsSource="{Binding MenuBars}">
+        <ItemsControl DockPanel.Dock="Top" ItemsSource="{Binding MenuBars}">
             <ItemsControl.ItemTemplate>
                 <DataTemplate>
                     <Button Content="{Binding Title}" Command="{Binding DataContext.RegionTo, RelativeSource={RelativeSource AncestorType=ItemsControl}}"
@@ -31,6 +31,10 @@
             </ItemsControl.ItemTemplate>
         </ItemsControl>
 
+            <Button Margin="5" HorizontalAlignment="Stretch" DockPanel.Dock="Bottom" Content="保存"
+                    Command="{Binding SaveAllCommand}"/>
+        </DockPanel>
+
         <ContentControl Grid.Column="1" prism:RegionManager.RegionName="{x:Static extent:PrismManager.MainRegionName}"/>
     </Grid>
 </Window>

StudentManager/Model/Students.cs

@@ -1,4 +1,5 @@
 using Mysqlx.Crud;
+using Newtonsoft.Json;
 using Org.BouncyCastle.Utilities;
 using StudentManager.Common;
 using StudentManager.Data;
@@ -140,14 +141,16 @@ namespace StudentManager.Model
 		public DelegateCommand AddNewColumnCommand { get; set; }
 		public DelegateCommand SubmitAddQuestionsCommand { get; set; }
 		public DelegateCommand ClearnAddQuestionsCommand { get; set; }
+		public DelegateCommand SaveAllCommand { get; set; }
 
 		Students(IRegionManager regionManager)
 		{
 			CreateMenuBar();
 
-			RegionTo = new DelegateCommand<string>((x) => {
+			RegionTo = new DelegateCommand<string>((x) =>
+			{
 				regionManager.Regions[PrismManager.MainRegionName].RequestNavigate(x.ToString());
-				if(x == "DetailCheckView")
+				if (x == "DetailCheckView")
 				{
 					RegionToDetailCheckView();
 				}
@@ -176,14 +179,14 @@ namespace StudentManager.Model
 
 			HomeWorkSelectedCommand = new DelegateCommand<DetailHomeWorkInfo>((e) =>
 			{
-				if(e == null) return;
+				if (e == null) return;
 				//HomeWork = 
 			});
 
 			DeleteQuestionCommand = new DelegateCommand<QuestionData>((x) =>
 			{
-				if(x == null) return;
+				if (x == null) return;
-				var c = MessageBox.Show("确定删除吗？","确认",MessageBoxButton.OKCancel);
+				var c = MessageBox.Show("确定删除吗？", "确认", MessageBoxButton.OKCancel);
 				if (c != MessageBoxResult.OK) return;
 				QuestionLib.Remove(x);
 				QuestionDatas = QuestionLib.GetAllQuestion();
@@ -210,6 +213,8 @@ namespace StudentManager.Model
 				ADDQuestionDatas.Clear();
 			});
 
+			SaveAllCommand = new DelegateCommand(() => FileSystem.SaveAll());
+
 			SubmitAddQuestionsCommand = new DelegateCommand(() =>
 			{
 
@@ -245,8 +250,6 @@ namespace StudentManager.Model
 
 			this.regionManager = regionManager;
 
-
-			SaveAll();
 		}
 
 		private int ConvertToHashInt(string item)
@@ -258,15 +261,39 @@ namespace StudentManager.Model
 
 		private void SubmitHomeWork()
 		{
+			// update error set and local homework
 			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Questions.ForEach(x =>
+			{
+				if (x.Status != HomeWork.FirstOrDefault(hw => hw.PID == x.ID).Status)
 				{
 					x.Status = HomeWork.FirstOrDefault(hw => hw.PID == x.ID).Status;
+					SelectedStudent.ErrorSet.AddQuestion(x);
+					SQLHelper.UpdateErrorSet(SelectedStudent.UID, x.ID, x.Status);
+				}
+
 			});
+
+			// update homework other info and online info
+			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Status = true;
+			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).DateTime = DateTime.Now;
+			List<int> correctHomeworkArray = new List<int>();
+			List<int> totalHomeworkArray = new List<int>();
+			SelectedStudent.HomeWorkSet.Get(SelectedHomeWorkSet.Lesson).Questions.ForEach(x =>
+			{
+				totalHomeworkArray.Add(x.ID);
+				if (x.Status != false) correctHomeworkArray.Add(x.ID);
+				
+			});
+			SQLHelper.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);
+
 		}
 
 		private void RegionToDetailView()
 		{
-			if(selectedStudent == null) return;
+			if (selectedStudent == null) return;
 			ErrorSet = selectedStudent.ErrorSet.GetDetailErrorSetInfo();
 			HomeWorkSet = selectedStudent.HomeWorkSet.GetDetailHomeWorkSetList();
 		}
@@ -300,10 +327,6 @@ namespace StudentManager.Model
 			questionDatas = QuestionLib.GetAllQuestion();
 		}
 
-		private void SaveAll()
+
-		{
-			StudentLib.Save();
-			QuestionLib.Save();
-		}
 	}
 }