C# Ajax ModalPopUp Extendar在执行代码隐藏中的前几行之前弹出

我有一个ajax模式弹出扩展程序，我正在使用它来显示一个包含一些数据的gridview。似乎在数据绑定到GridView之前会弹出ModalPopp：

  protected void grdrequisitionraisedbyme_RowCommand(object sender, GridViewCommandEventArgs e)
    {
    if (e.CommandName.Equals("viewhistory"))
        {
            GridViewRow clickedRow = ((LinkButton)e.CommandSource).NamingContainer as GridViewRow;
            LinkButton lnkclaimno = (LinkButton)clickedRow.FindControl("lnkclaimno");
            DataSet ds = new DataSet();
            ds = GetHistory(lnkclaimno.Text.Trim());
            grvcapexhistory.DataSource = null;
            grvcapexhistory.DataBind();
            if (ds.Tables[0].Rows.Count > 0)
            {
                grvcapexhistory.DataSource = ds.Tables[0];
                grvcapexhistory.DataBind();
                popup.Show(); 
            }
          }  

  }

我在绑定

grvcapexhistory

的位置放置了一个调试器，但即使断点未到达

popup.Show（）

摆脱Ajax弹出窗口并使用以下选项。它会解决你的问题

<asp:Panel ID="popup" runat="server" visible="false">
 <table style="position: fixed; z-index: 1; left: 0px; top: 0px"   border="0"  width="100%" height="100%">
    <tr>
        <td valign="top"  align="center"  >
        // below div will automatically expand as much as needed 
        <div class="yourmodalclass" style=" display:inline-block;margin-top:90px; ">        
        //put your GridView ID="grvcapexhistory" and other stuff here
 </div>
 </td>
 </table>
 </asp:Panel>

---

这是迄今为止我遇到的最简单的模式弹出窗口。我还没用过。我稍后会把它标记为答案+1.
<asp:Panel ID="popup" runat="server" visible="false">
 <table style="position: fixed; z-index: 1; left: 0px; top: 0px"   border="0"  width="100%" height="100%">
    <tr>
        <td valign="top"  align="center"  >
        // below div will automatically expand as much as needed 
        <div class="yourmodalclass" style=" display:inline-block;margin-top:90px; ">        
        //put your GridView ID="grvcapexhistory" and other stuff here
 </div>
 </td>
 </table>
 </asp:Panel>