GridView的UpdatePanel的不更新

本文介绍了GridView的UpdatePanel的不更新的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

由于某些原因，我不能在UpdatePanel的GridView的我做了更改后刷新。有人可以帮忙吗？

我使用的ToolkitScriptManager控制在UpdatePanel。

＆LT; ASP：的UpdatePanel ID =UpdatePanel1=服务器的UpdateMode =条件＆GT;   ＆LT;＆的ContentTemplate GT;        ＆LT; ASP：GridView控件等等...         ＆LT; / ASP：GridView的＆GT;    ＆LT; /＆的ContentTemplate GT;   ＆LT;＆触发器GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =DeleteButton事件名称=点击/＆GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =IBUpUp事件名称=点击/＆GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =IBDownDown事件名称=点击/＆GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =IBUp事件名称=点击/＆GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =IBDown事件名称=点击/＆GT;       ＆LT; ASP：AsyncPostBackTrigger控件ID =EditProfile事件名称=点击/＆GT;   ＆LT; /触发器＆GT;

保护无效Unnamed3_Click（对象发件人，ImageClickEventArgs E）        {

INT的rowIndex = GridView1.SelectedIndex;        GridViewRow GVR = GridView1.SelectedRow;        如果（rowIndex位置＆GT; = 0）        {            //删除            字符串GridViewOne = GridView1.DataKeys [rowIndex位置] .Value.ToString（）;            //删除图像            串imagename = gvr.Cells [2]。文本;            字符串映像路径= @C：\\图片\\;            映像路径=映像路径+ imagename;            如果（System.IO.File.Exists（映像路径））            {                //使用try块捕获的IOExceptions，以                //处理文件的情况下，已被                //被另一个进程打开。                尝试                {                    System.IO.File.Delete（映像路径）;                }                赶上（System.IO.IOException米）                {                    Console.WriteLine（m.Message）;                    返回;                }            }            INT bannerid = Convert.ToInt32（GridViewOne）;            SqlDataReader的特别提款权= NULL;            康涅狄格州的SqlConnection =的getConnection（）;            CMD的SqlCommand =新的SqlCommand（Tool_DeleteBannerAds，康恩）;            cmd.CommandType = CommandType.StoredProcedure;            SqlParameter的参数1 =新的SqlParameter（）;            param1.ParameterName =@BannerID;            param1.Value = bannerid;            cmd.Parameters.Add（参数1）;            conn.Open（）;            SDR = cmd.ExecuteReader（）;            sdr.Close（）;            UpdatePanel1.Update（）;            GridView1.DataBind（）;        }        其他        {            //什么都不做            //保持            //Response.Redirect(\"Default.aspx）;        }    }

解决方案

更改顺序：

GridView1.DataBind（）; UpdatePanel1.Update（）;

For some reason, I can't get the Gridview in the Updatepanel to refresh after I've made changes. can someone help?

I'm using the ToolkitScriptManager control and the UpdatePanel.

<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> <ContentTemplate> <asp:GridView blah... </asp:GridView> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="DeleteButton" EventName="Click" /> <asp:AsyncPostBackTrigger ControlID="IBUpUp" EventName="Click" /> <asp:AsyncPostBackTrigger ControlID="IBDownDown" EventName="Click" /> <asp:AsyncPostBackTrigger ControlID="IBUp" EventName="Click" /> <asp:AsyncPostBackTrigger ControlID="IBDown" EventName="Click" /> <asp:AsyncPostBackTrigger ControlID="EditProfile" EventName="Click" /> </Triggers>

protected void Unnamed3_Click(object sender, ImageClickEventArgs e) {

int rowIndex = GridView1.SelectedIndex; GridViewRow gvr = GridView1.SelectedRow; if (rowIndex >= 0) { //delete String GridViewOne = GridView1.DataKeys[rowIndex].Value.ToString(); //delete image string imagename = gvr.Cells[2].Text; string pathToImage = @"C:\Images\"; pathToImage = pathToImage + imagename; if (System.IO.File.Exists(pathToImage)) { // Use a try block to catch IOExceptions, to // handle the case of the file already being // opened by another process. try { System.IO.File.Delete(pathToImage); } catch (System.IO.IOException m) { Console.WriteLine(m.Message); return; } } int bannerid = Convert.ToInt32(GridViewOne); SqlDataReader sdr = null; SqlConnection conn = GetConnection(); SqlCommand cmd = new SqlCommand("Tool_DeleteBannerAds", conn); cmd.CommandType = CommandType.StoredProcedure; SqlParameter param1 = new SqlParameter(); param1.ParameterName = "@BannerID"; param1.Value = bannerid; cmd.Parameters.Add(param1); conn.Open(); sdr = cmd.ExecuteReader(); sdr.Close(); UpdatePanel1.Update(); GridView1.DataBind(); } else { //don't do anything //keep //Response.Redirect("Default.aspx"); } }

解决方案

change the order:

GridView1.DataBind(); UpdatePanel1.Update();