private void butView_Click(object sender, EventArgs e)
 {
     Adding_Forms.Subject_Add obj = new Adding_Forms.Subject_Add("Search");
     obj.ShowDialog();
 }
 private void butDelete_Click(object sender, EventArgs e)
 {
     Adding_Forms.Subject_Add obj = new Adding_Forms.Subject_Add("Delete");
     obj.ShowDialog();
 }