GridView 无数据时，绑定提示

  private void BindData()

     {

         DataTable dt = DAO.RunSQLReturnDt(this.getsql());

         int dtcount = dt.Rows.Count;

         if (dtcount == )

         {

             dt.Rows.Add(dt.NewRow());

         }

         DataView dv = dt.DefaultView;

         //对用于分页的类的引用

         PagedDataSource pds = new PagedDataSource();

         pds.DataSource = dv;//设置数据源(DataTable类型)

         pds.AllowPaging = true;

         //每页显示的行数

         pds.PageSize = ;

         AspNetPager1.RecordCount = dv.Count;

         pds.CurrentPageIndex = AspNetPager1.CurrentPageIndex - ;

         pds.PageSize = AspNetPager1.PageSize;

         GridView1.DataSource = pds;

         GridView1.DataBind();

         if (dtcount <= )

         {

             int colnumcount = dt.Columns.Count;

             GridView1.Rows[].Cells.Clear();

             GridView1.Rows[].Cells.Add(new TableCell());

             GridView1.Rows[].Cells[].ColumnSpan = colnumcount;

             GridView1.Rows[].Cells[].Text = "没有相关记录";

             GridView1.Rows[].Cells[].Style.Add("color", "red");

         }

     }

页面正常显示

 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CssClass="tablelist" GridLines="None" DataKeyNames="C_ID" OnRowDataBound="GridView1_RowDataBound">

                     <Columns>

                         <asp:BoundField DataField="C_AppNum" HeaderText="入库编号" SortExpression="C_AppNum">

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:BoundField>

                         <asp:BoundField DataField="C_AppDate" HeaderText="申请时间" SortExpression="C_AppDate">

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:BoundField>

                         <asp:TemplateField HeaderText="申请部门">

                             <ItemTemplate>

                           <%# XC.Depart.GetDepartName(Eval("C_AppDepartID").ToString()) %>

                             </ItemTemplate>

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:TemplateField>

                         <asp:TemplateField HeaderText="申请人">

                             <ItemTemplate>

                                 <%# XC.User.GetUserName(Eval("C_AppUserID").ToString())%>

                             </ItemTemplate>

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:TemplateField>

                         <asp:BoundField DataField="C_Status" HeaderText="状态" SortExpression="C_Status">

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:BoundField>

                         <asp:BoundField DataField="C_AuditState" HeaderText="审核状态" SortExpression="C_AuditState">

                             <ItemStyle HorizontalAlign="Center" />

                         </asp:BoundField>

                     </Columns>

                     <HeaderStyle HorizontalAlign="center" />

                 </asp:GridView>

效果