// Update
private void Update_Click(object sender, EventArgs e)
{
if (comboBox1.Text == "")
{
MessageBox.Show("Enter your StudentId");
}
else
{
try
{
using (Online_Exame ent = new Online_Exame())
{
var ins = ent.Instractors.Find(ins_id);
int Ins_dept = (int)ins.Dept_id;
Student student = ent.Students.Find(int.Parse(comboBox1.Text));
ent.UpdateStudent(student.St_id, txtFname.Text, txtLname.Text,
txtaddress.Text, int.Parse(txtage.Text), txtEmail.Text, Ins_dept);
comboBox1.Text = txtFname.Text = txtLname.Text = txtEmail.Text = txtage.Text
= txtaddress.Text = string.Empty;
MessageBox.Show("Updated successfully");
loadDataGrid();
}
}
catch (NullReferenceException)
{
MessageBox.Show("Incorrect ID");
}
catch (FormatException)
{
MessageBox.Show("Invaild Format");
}
}
}