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()); } }