protected void Button1_Click1(object sender, EventArgs e) { objBEL = new MasterBEL(); objDAL = new ClassDAL(); objBEL.subject = TextBox1.Text; objBEL.course = DropDownList1.SelectedValue; objBEL.branch = DropDownList3.SelectedValue; objBEL.year = DropDownList4.SelectedValue; Label1.Text = objDAL.AddSubject(objBEL); GridView1.DataBind(); }