//添加一次作业
protected void AssignSureButton_Click(object sender, EventArgs e)
{
AssignTitlePanel.Visible = false;
ProblemsPanel.Visible = true;
Assignment assignment = new Assignment();
string date = datelineTextBox.Text + " 23:59:59";
//显示课程信息
assignmentcourseLabel.Text = "课程：" + course.name;
assignmentLabel.Text = "<br>次数：" + numberDropDownList.SelectedItem.Value + "<br>标题：" + assigntitleTextBox.Text + "<br>截止日期：" + date + "<br>说明：" + assigndescriTextBox.Text;
/*
* //获得课程作业数
* List<Assignment> assignmentnum = assignMan.getAssignment(course.num);*/
//添加assignment
//assignment.number = assignmentnum.Count + 1;
assignment.number = int.Parse(numberDropDownList.SelectedItem.Value);
assignment.title = assigntitleTextBox.Text;
assignment.descrip = assigndescriTextBox.Text;
assignment.start_time = DateTime.Now;
assignment.end_time = DateTime.Parse(date);
assignment.course = course.num;
assignment.major = "11SE";
//将作业写入数据库
assignMan.create(assignment);
Session["Aassignment"] = assignment;
Session["problems"] = problems;
}