// TODO: Exercise 4: Task 5a: Enable a teacher to add a grade to a student
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
if (SessionContext.UserRole == Role.Teacher)
{
try
{
GradeDialog gd = new GradeDialog();
if (gd.ShowDialog().Value)
{
Grade newGrade = new Grade(
SessionContext.CurrentStudent.StudentID
, gd.assessmentDate.SelectedDate.Value.ToString("d")
, gd.subject.SelectedValue.ToString()
, gd.assessmentGrade.Text
, gd.comments.Text);
DataSource.Grades.Add(newGrade);
}
}
catch (Exception ex)
{
string message = $"Unable to save grade.\nError: {ex.InnerException}";
MessageBox.Show(message, "Exception caught");
}
Refresh();
}
}
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
// If the user is not a teacher, do nothing (the button should not appear anyway)
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
// TODO: Exercise 2: Task 3a: Use the GradeDialog to get the details of the new grade.
// TODO: Exercise 2: Task 3b: Display the form and get the details of the new grade.
// TODO: Exercise 2: Task 3c: When the user closes the form, retrieve the details of the assessment grade from the form
// and use them to create a new Grade object.
// TODO: Exercise 2: Task 3d: Save the grade.
// TODO: Exercise 2: Task 3e: Refresh the display so that the new grade appears
GradeDialog gd = new GradeDialog();
if (gd.ShowDialog().Value)
{
Grades.DataModel.Grade newGrade = new Grades.DataModel.Grade();
newGrade.AssessmentDate = gd.assessmentDate.SelectedDate.Value;
newGrade.SubjectId = gd.subject.SelectedIndex;
newGrade.Assessment = gd.assessmentGrade.Text;
newGrade.Comments = gd.comments.Text;
newGrade.StudentUserId = SessionContext.CurrentStudent.UserId;
SessionContext.DBContext.Grades.Add(newGrade);
SessionContext.Save();
Refresh();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error adding assessment grade", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
// Exercise 4: Task 5a: Enable a teacher to add a grade to a student
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
GradeDialog gradeDialog = new GradeDialog();
if (gradeDialog.ShowDialog().Value)
{
Grade grade = new Grade();
grade.AssessmentDate = gradeDialog.assessmentDate.SelectedDate.ToString();
grade.SubjectName = gradeDialog.subject.Text;
grade.Assessment = gradeDialog.assessmentGrade.Text;
grade.Comments = gradeDialog.comments.Text;
DataSource.Grades.Add(grade);
SessionContext.CurrentTeacher.AddGrade(grade, SessionContext.CurrentStudent);
this.Refresh();
}
}
catch (ArgumentException exception)
{
MessageBox.Show(exception.Message, "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
// If the user is not a teacher, do nothing (the button should not appear anyway)
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
GradeDialog newGrade = new GradeDialog(); //New instance of GradeDialog.
if (newGrade.ShowDialog().Value) //Runs when the OK button is pressed.
{
Grade studentGrade = new Grade //Creates a new grade, with all the inserted values and the Student ID from SessionContext.
{
AssessmentDate = newGrade.assessmentDate.SelectedDate.Value,
SubjectId = newGrade.subject.SelectedIndex,
Assessment = newGrade.assessmentGrade.Text,
Comments = newGrade.comments.Text,
StudentUserId = SessionContext.CurrentStudent.UserId
};
SessionContext.DBContext.Grades.Add(studentGrade); //Adds the grade to the database.
SessionContext.DBContext.SaveChanges(); //Saves the changes to the database.
Refresh(); //Refreshes the display to showcase the new grade.
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error adding assessment grade", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
// TODO: Exercise 4: Task 5a: Enable a teacher to add a grade to a student
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
var dialog = new GradeDialog();
if (dialog.ShowDialog() == true)
{
var grade = new Grade()
{
Assessment = dialog.assessmentGrade.Text,
AssessmentDate = dialog.assessmentDate.Text,
Comments = dialog.comments.Text,
StudentID = SessionContext.CurrentStudent.StudentID,
SubjectName = dialog.subject.Text
};
DataSource.Grades.Add(grade);
SessionContext.CurrentStudent.AddGrade(grade);
Refresh();
}
}
catch (Exception)
{
throw new ArgumentException("Could not add grade to student.");
}
}
//添加学生成绩
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (dataGridView1.CurrentRow == null)
{
return;
}
var r = dataGridView1.CurrentRow.Cells;
using (GradeDialog addgrade = new GradeDialog(teacher,
Convert.ToInt32(r[3].Value),
Convert.ToInt32(r[0].Value),
r[1].Value as string,
Convert.ToSingle(r[4].Value as string),
Convert.ToSingle(r[5].Value as string),
Convert.ToSingle(r[6].Value as string)
))
addgrade.ShowDialog();
if (toolStripComboBox3.Text.Trim() != "")
{
string option = " AND " + Convert.ToString(dataGridView1.CurrentRow.Cells[3].Value) + " = classId ";
DataTable t = GradeManager.SelectDifferentGrade(teacher.Id, option);
t.Columns[0].ColumnName = "学号";
t.Columns[1].ColumnName = "姓名";
t.Columns[2].ColumnName = "学院";
t.Columns[3].ColumnName = "课程编号";
t.Columns[4].ColumnName = "平时成绩";
t.Columns[5].ColumnName = "期末成绩";
t.Columns[6].ColumnName = "总成绩";
dataGridView1.DataSource = t;
}
else
{
RefreshClassTable();
}
}
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
if (SessionContext.UserRole != Role.Teacher) //Makes the button do nothing if a Student clicks on it, since it returns immediately when the role is not a Teacher.
{
return;
}
try
{
GradeDialog gd = new GradeDialog();
if (gd.ShowDialog().Value)
{
Grade newGrade = new Grade(); //Creates a new Grade object and stores (and converts if necessary) the new grades in it.
newGrade.AssessmentDate = gd.assessmentDate.SelectedDate.Value.ToString("d");
newGrade.SubjectName = gd.subject.SelectedValue.ToString();
newGrade.Assessment = gd.assessmentGrade.Text;
newGrade.Comments = gd.comments.Text;
DataSource.Grades.Add(newGrade); //Adds the grade to the DataSource list.
SessionContext.CurrentStudent.AddGrade(newGrade); //Saves the newly added grade to the current student.
Refresh(); //Execute the Refresh method so the added grade appears.
}
}
catch (Exception ex) //Whenever an unexpected error occurs when adding a grade.
{
MessageBox.Show(ex.Message, "There was an error adding the grade to this student.", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
var gd = new GradeDialog();
if (gd.ShowDialog().Value)
{
var newGrade = new Grade
{
AssessmentDate = gd.assessmentDate.SelectedDate.Value.ToString("d"),
SubjectName = gd.subject.SelectedValue.ToString(),
Assessment = gd.assessmentGrade.Text,
Comments = gd.comments.Text
};
DataSource.Grades.Add(newGrade);
SessionContext.CurrentStudent.AddGrade(newGrade);
Refresh();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error adding assessment grade", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
//If the grading button is clicked on a student's assignment
private void gradingButton_Clicked(object sender, RoutedEventArgs e)
{
//Get the assignment
var item = (sender as FrameworkElement).Tag as Assignment;
string gradeInput = "";
//Show the grade dialog and fetch the result
GradeDialog gradeDialog = new GradeDialog("Please assign new grade (leave blank to unassign)");
if (gradeDialog.ShowDialog() == true)
{
gradeInput = gradeDialog.Answer;
}
//Submit the new result
viewModel.NewResult(item, gradeInput);
RefreshBindings();
}
private void AddGrade_Click(object sender, RoutedEventArgs e)
{
// If the user is not a teacher, do nothing (the button should not appear anyway)
if (SessionContext.UserRole != Role.Teacher)
{
return;
}
try
{
// Use the GradeDialog to get the details of the assessment grade
GradeDialog gd = new GradeDialog();
// Display the form and get the details of the new grade
if (gd.ShowDialog().Value)
{
// When the user closes the form, retrieve the details of the assessment grade from the form
// and use them to create a new Grade object
Grade newGrade = new Grade();
newGrade.AssessmentDate = gd.assessmentDate.SelectedDate.Value.ToString("d");
newGrade.SubjectName = gd.subject.SelectedValue.ToString();
newGrade.Assessment = gd.assessmentGrade.Text;
newGrade.Comments = gd.comments.Text;
// Save the grade to the list of grades
DataSource.Grades.Add(newGrade);
// Add the grade to the current student
SessionContext.CurrentStudent.AddGrade(newGrade);
// Refresh the display so that the new grade appears
Refresh();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error adding assessment grade", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
//增加修改成绩
private void toolStripButton6_Click(object sender, EventArgs e)
{
if (dataGridView1.CurrentRow == null)
{
return;
}
var r = dataGridView1.CurrentRow.Cells;
using (GradeDialog addgrade = new GradeDialog(GetSelectedTeacher(),
Convert.ToInt32(r[3].Value),
Convert.ToInt32(r[0].Value),
r[1].Value as string,
Convert.ToSingle(r[4].Value as string),
Convert.ToSingle(r[5].Value as string),
Convert.ToSingle(r[6].Value as string)
))
addgrade.ShowDialog();
string option = "";
if (toolStripComboBox3.Text.Trim() != "")
{
option = " AND " + Convert.ToInt32(toolStripComboBox3.Text.Trim()) + " = teacherId ";
DataTable dt = AdminManager.DisplayAllStuGra(option);
dt.Columns[0].ColumnName = "课程编号";
dt.Columns[1].ColumnName = "学生ID";
dt.Columns[2].ColumnName = "学生姓名";
dt.Columns[3].ColumnName = "学院";
dt.Columns[4].ColumnName = "平时成绩";
dt.Columns[5].ColumnName = "期末成绩";
dt.Columns[6].ColumnName = "总成绩";
dataGridView1.DataSource = dt;
}
else
{
RefreshClassTable();
}
}