protected void BindDepartment(DropDownList ddl, int collegeid)
 {
     college        = new College();
     ddl.DataSource = college.GetDepartmentByCollege(collegeid);
     ddl.DataBind();
     ddl.DataTextField  = "DepartmentName";
     ddl.DataValueField = "DepartmentId";
     ddl.DataBind();
 }