protected void gvRequirement_RowDeleting(object sender, GridViewDeleteEventArgs e)
 {
     e.Cancel = true;
     int sequence = (int)e.Keys["sequence"];
     DepartmentOrderDetailTableAdapters.DepartmentOrderRequirementTableAdapter tableAdapter = new DepartmentOrderDetailTableAdapters.DepartmentOrderRequirementTableAdapter();
     tableAdapter.Delete(loggedInUserId, sequence);
     gvRequirement.DataBind();
     btnAddRequirement.Focus();
 }