GridView多层表头 GridView复杂表头

 protected void gv_Test_RowCreated(object sender, GridViewRowEventArgs e)    {        if (e.Row.RowType == DataControlRowType.Header)        {            e.Row.SetRenderMethodDelegate(new RenderMethod(NewRenderMethod));        }    }

 

public void NewRenderMethod(HtmlTextWriter writer, Control ctl)    {        //添加表头第一行        writer.Write("<TD rowspan=/"2/" align=/"center/">第一二行的第一列</TD>/n");        writer.Write("<TD rowspan=/"2/" align=/"center/">第一二行的第二列</TD>/n");        writer.Write("<TD colspan=/"3/" align=/"center/">第一行第三列，跨第二行三列</TD>/n");        writer.Write("<TD colspan=/"5/" align=/"center/">第一行第四列，跨第二行五列</TD>/n");        writer.Write("<TD colspan=/"5/" align=/"center/">第一行第五列，跨第二行五列</TD>/n");        writer.Write("</TR>/n");        this.gv_WorkLoad.HeaderStyle.AddAttributesToRender(writer);

        //添加表头第二行        writer.RenderBeginTag("TR");

        //因为第二行的第一第二列分别与第一行的第一第二列合并，从第三列开始添加第二行        for (int i = 2; i < ctl.Controls.Count; i++)           {            ctl.Controls[i].RenderControl(writer);        }    }