private void combosem_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
int val1, val2, val3;
Int32.TryParse(combodept.SelectedValue.ToString(), out val1);
Int32.TryParse(combolevel.SelectedValue.ToString(), out val2);
Int32.TryParse(combosem.SelectedValue.ToString(), out val3);
dt = s.getSubjectFordept_lev_sem(val1, val2, val3);
this.combosubject.DisplayMember = "sub_name";
this.combosubject.ValueMember = "sub_id";
combosubject.BindingContext = this.BindingContext;
this.combosubject.DataSource = dt;
int val12, val22, val23;
Int32.TryParse(combodept.SelectedValue.ToString(), out val12);
Int32.TryParse(combolevel.SelectedValue.ToString(), out val22);
Int32.TryParse(combosem.SelectedValue.ToString(), out val23);
cmbstd.DisplayMember = "stu_name";
cmbstd.ValueMember = "stu_id";
cmbstd.BindingContext = this.BindingContext;
cmbstd.DataSource = std.getstudentFordept_lev_sem(val12, val22, val23);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void combosem_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
int val1, val2, val3;
Int32.TryParse(cmbDept.SelectedValue.ToString(), out val1);
Int32.TryParse(cmbLevel.SelectedValue.ToString(), out val2);
Int32.TryParse(cmbSem.SelectedValue.ToString(), out val3);
cmbStd.DisplayMember = "stu_name";
cmbStd.ValueMember = "stu_id";
cmbStd.BindingContext = this.BindingContext;
cmbStd.DataSource = std.getstudentFordept_lev_sem(val1, val2, val3);
}
catch //(Exception ex)
{
// MessageBox.Show(ex.ToString());
}
}