@using Entities.DTO
@using TechHelper.Client.Exam
@using TechHelper.Client.Services
@page "/exam/check/{ExamID}"
试卷批改预览: @Assignment.Title
@if (_isLoading)
{
正在加载试卷和学生数据...
}
else if (_questionsForTable.Any() && _students.Any())
{
序号
分值
@foreach (var student in _students)
{
@student.Name
}
@context.QuestionItem.Sequence
@context.QuestionItem.Score
@foreach (var student in _students)
{
@if (context.StudentAnswers.ContainsKey(student.Id))
{
}
else
{
N/A
}
}
学生总分预览:
@foreach (var student in _students)
{
@student.Name: @GetStudentTotalScore(student.Id)
}
提交批改结果 (模拟)
}
else
{
无法加载试卷或题目信息。
返回试卷列表
}
@code {
[Parameter]
public string ExamId { get; set; }
[Inject]
public IExamService ExamService { get; set; }
[Inject]
private ISnackbar Snackbar { get; set; }
[Inject]
private NavigationManager Navigation { get; set; }
private MudTable _table = new();
private AssignmentDto Assignment { get; set; } = new AssignmentDto();
private ExamStruct _examStruct = new ExamStruct();
private List _students = new List();
private List _questionsForTable = new List();
private bool _isLoading = true;
protected override async Task OnInitializedAsync()
{
_isLoading = true;
await LoadExamData();
GenerateTemporaryStudentsAndAnswers();
_isLoading = false;
}
private async Task LoadExamData()
{
if (Guid.TryParse(ExamId, out Guid parsedExamId))
{
try
{
var result = await ExamService.GetExam(parsedExamId);
if (result.Status)
{
Assignment = result.Result as AssignmentDto ?? new AssignmentDto();
_examStruct = Assignment.GetStruct();
}
else
{
Snackbar?.Add($"获取试卷失败: {result.Message}", Severity.Error);
Navigation.NavigateTo("/exam/manager");
}
}
catch (Exception ex)
{
Console.Error.WriteLine($"获取试卷时发生错误: {ex.Message}");
Snackbar?.Add($"获取试卷失败: {ex.Message}", Severity.Error);
Navigation.NavigateTo("/exam/manager");
}
}
else
{
Console.Error.WriteLine($"错误：路由参数 ExamId '{ExamId}' 不是一个有效的 GUID 格式。");
Snackbar?.Add("无效的试卷ID，无法加载。", Severity.Error);
Navigation.NavigateTo("/exam/manager");
}
}
// 生成临时学生和作答数据
private void GenerateTemporaryStudentsAndAnswers()
{
_students = new List();
// 生成 40 个学生
for (int i = 1; i <= 40; i++)
{
_students.Add(new Student { Name = $"学生{i}" });
}
_questionsForTable = _examStruct.Questions.Select(qItem =>
{
var rowData = new QuestionRowData
{
QuestionItem = qItem,
StudentAnswers = new Dictionary()
};
// 为每个学生随机生成初始的对错状态
var random = new Random();
foreach (var student in _students)
{
// 模拟随机对错，50%的概率
rowData.StudentAnswers[student.Id] = random.Next(0, 2) == 1;
}
return rowData;
}).ToList();
}
// 当某个学生的某个题目的作答状态改变时触发
private void OnAnswerChanged(string questionSequence, Guid studentId, bool isCorrect)
{
// 可以在这里添加额外的逻辑，例如记录更改
Console.WriteLine($"题目 {questionSequence}, 学生 {studentId} 的答案变为: {isCorrect}");
// 由于是 @bind-Checked，数据模型已经自动更新，这里只是日志
}
// 计算某个学生的总分
private float GetStudentTotalScore(Guid studentId)
{
float totalScore = 0;
foreach (var row in _questionsForTable)
{
if (row.StudentAnswers.TryGetValue(studentId, out bool isCorrect) && isCorrect)
{
totalScore += row.QuestionItem.Score;
}
}
return totalScore;
}
// 切换某个学生所有题目的对错状态 (用于快速批改)
private void ToggleStudentAllAnswers(Guid studentId)
{
bool allCorrect = _questionsForTable.All(row => row.StudentAnswers.ContainsKey(studentId) && row.StudentAnswers[studentId]);
foreach (var row in _questionsForTable)
{
if (row.StudentAnswers.ContainsKey(studentId))
{
row.StudentAnswers[studentId] = !allCorrect; // 全部取反
}
}
StateHasChanged(); // 手动通知 Blazor 刷新 UI
}
// 提交批改结果（模拟）
private void SubmitGrading()
{
Console.WriteLine("--- 提交批改结果 ---");
foreach (var student in _students)
{
Console.WriteLine($"学生: {student.Name}, 总分: {GetStudentTotalScore(student.Id)}");
foreach (var row in _questionsForTable)
{
if (row.StudentAnswers.TryGetValue(student.Id, out bool isCorrect))
{
Console.WriteLine($" - 题目 {row.QuestionItem.Sequence}: {(isCorrect ? "正确" : "错误")}");
}
}
}
Snackbar?.Add("批改结果已提交（模拟）", Severity.Success);
// 实际应用中，这里会将 _questionsForTable 和 _students 的数据发送到后端API
}
}