private void FormCheckscore_Load(object sender, EventArgs e) { cbbClass.SelectedIndex = 0; cbbSemester.SelectedIndex = 0; cbbClass.SelectedIndex = 0; if (FormMain.Power == "学生") { Text = "当前学生编号:" + FormMain.User; cbbClass.Enabled = false; cbbstudent.Enabled = false; cbbstudent.Text = FormMain.User; dataGridView1.ReadOnly = true; string sqlstr1 = "select * from Coures where Cour_Semester='" + cbbSemester.SelectedItem.ToString() + "'"; operate.BindDropdownlist(sqlstr1, cbbCourse, 1);//绑定下拉列表(课程) cbbCourse.SelectedIndex = -1; } else { if (FormMain.Power == "教师") { Text = "当前教师编号:" + FormMain.User; } string StuId = dataGridView1.SelectedCells[1].Value.ToString(); //得到编号(学生或者教师编号) operate.StuGet_Image(StuId, pictureBox1); //显示图片信息 this.dataGridView1.Columns[1].FillWeight = 120; string str1 = "select stu_name from Student"; operate.BindDropdownlist(str1, cbbstudent, 0); cbbCourse.SelectedIndex = -1; } }