private void button2_Click(object sender, EventArgs e)
{
if (selected_item_id == nonselected)
{
System.Windows.Forms.MessageBox.Show("Firstly, select a student id to update.");
}
else
{
Add_UpdateForm addForm = new Add_UpdateForm(selected_item_id);
addForm.Show();
selected_item_id = nonselected;
}
}
private void button1_Click(object sender, EventArgs e)
{
Add_UpdateForm addForm = new Add_UpdateForm(nonselected);
addForm.Show();
}