调用 .Show() 的 ModalPopupExtender 不起作用

Question

我正在使用 Visual Studio 2010，对于数据库，我正在使用 Entity Framework 4.

在我的页面中，我有 3 个选项卡，在第二个选项卡中，我使用网格视图显示员工的详细信息。在该网格视图中有 2 个图像按钮，一个用于删除，另一个用于编辑。每当我单击“编辑图像”按钮时，我都想打开一个弹出框。

问题是 1.弹出框只出现一秒钟。 2. 能够检索Grid 视图的行索引。但是没有值传递到其他文本框，它显示空值，即 name0.Text= ""

在我的 .aspx 页面中，我有以下内容

对于图像按钮

<asp:ImageButton ID="edit" runat="server" CommandArgument='<%# Bind("EmpID")%>' CommandName="edituser" ImageUrl="image/images.jpg" ToolTip="Edit User Details"  OnClick="EditUser_Clicked"> </asp:ImageButton>

对于 ModalPopupExtender

<asp:ToolkitScriptManager ID="Toolkitmgr" runat="server"></asp:ToolkitScriptManager>
         <asp:HiddenField ID="EmpID" runat="server" 
             onvaluechanged="EmpID_ValueChanged"/>
         <asp:ModalPopupExtender ID="mpedit" DropShadow="true" BackgroundCssClass="modalBackground"
            PopupControlID="pnedit"  CancelControlID="btnCancel"
            runat="server" TargetControlID="EmpID"></asp:ModalPopupExtender> 
          <asp:Panel runat="server" ID="pnedit" CssClass="modalPopup" Style="display: block;width:525px">

         ***Some Code***

         </asp:Panel>

在 EditUser_Clicked 事件的服务器端代码中，我有以下内容：

 protected void EditUser_Clicked(object sender, EventArgs e)
    {
        ImageButton btndetails = sender as ImageButton;
        GridViewRow row = (GridViewRow)btndetails.NamingContainer;
        lblId.Text = GridView1.DataKeys[row.RowIndex].Value.ToString(); 
        name0.Text = row.Cells[1].Text;
        desig0.Text = row.Cells[2].Text;
        dob0.Text = row.Cells[3].Text;
        email0.Text = row.Cells[4].Text;
        country0.Text = row.Cells[5].Text;
        city0.Text = row.Cells[6].Text;
        add0.Text = row.Cells[7].Text;
        hq0.Text = row.Cells[8].Text;
        rbtnListGender0.Text = row.Cells[9].Text;
        mobno0.Text = row.Cells[10].Text;
        this.mpedit.Show();

    }

代码运行没有错误，但模态弹出窗口不可见。请帮我找出错误。

Answer 1

有 3 种方法可以使用更新 Panel.Try 使用模态弹出窗口中的任何一种。

PopupPanel 内带有 UpdatePanel 的模态弹出窗口

        <div style="background-color: White">
            <asp:Button runat="server" ID="button4" Text="Launch Modal  Popup1" />
            <asp:Panel runat="server" ID="modalPanel3" Style="display: none">
                <asp:UpdatePanel runat="server" ID="updatePanel3">
                    <ContentTemplate>
                        <asp:Label runat="server" ID="label4" Text="Label in UpdatePanel"></asp:Label>
                        <asp:Button runat="server" ID="Button5" Text="Click to Cause postback" OnClick="Button5_Click" />
                    </ContentTemplate>
                </asp:UpdatePanel>
                <asp:Button runat="server" ID="Button6" Text="OK" />
                <asp:LinkButton runat="server" ID="LinkButton1" Text="Cancel" />
            </asp:Panel>
            <ajaxToolkit:ModalPopupExtender runat="server" ID="modalPopupExtender3" TargetControlID="button4"
                PopupControlID="modalPanel3" OkControlID="Button6" CancelControlID="LinkButton1"
                BackgroundCssClass="modalBackground">
            </ajaxToolkit:ModalPopupExtender>
        </div>

2.Update 包含 ModalPopup 及其关联的 PopupPanel 的面板

 <asp:UpdatePanel runat="server" ID="updatePanel2" UpdateMode="Conditional" ChildrenAsTriggers="true">
                <ContentTemplate>
                    <asp:Button runat="server" ID="button2" Text="Launch Modal Popup2" />
                    <asp:Panel runat="server" ID="modalPanel2" BackColor="AliceBlue" Style="display: none">
                        <asp:Label runat="server" ID="label5" Text="Label in UpdatePanel"></asp:Label>
                        <asp:Button runat="server" ID="postbackBtn" Text="Click to Cause postback" OnClick="postbackBtn_Click" /><br />
                        <asp:Button runat="server" ID="cancelBtn2" Text="OK" />
                        <asp:LinkButton runat="server" ID="okBtn2" Text="Cancel" />
                    </asp:Panel>
                    <ajaxToolkit:ModalPopupExtender runat="server" ID="modalPopupExtender2" TargetControlID="button2"
                        PopupControlID="modalPanel2" OkControlID="okBtn2" CancelControlID="cancelBtn2"
                        BackgroundCssClass="modalBackground">
                    </ajaxToolkit:ModalPopupExtender>
                </ContentTemplate>
            </asp:UpdatePanel>

3.Update 包含 ModalPopup 的面板；它的 PopupPanel 里面有一个 UpdatePanel

   <asp:UpdatePanel runat="server" ID="outerUpdatePanel" UpdateMode="Conditional" ChildrenAsTriggers="false">
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="outerPanelTrigger" />
                </Triggers>
                <ContentTemplate>
                    <asp:Button runat="server" ID="outerPanelTrigger" Text="OuterPanelTrigger" /><br />
                    <br />
                    <asp:Button runat="server" ID="button1" Text="Launch Modal Popup3" />
                    <asp:Panel runat="server" ID="modalPanel1" BackColor="Pink" Style="display: none">
                        <asp:UpdatePanel runat="server" ID="updatePanel1" ChildrenAsTriggers="true" UpdateMode="Conditional">
                            <ContentTemplate>
                                <asp:Label runat="server" ID="label1" Text="Label in UpdatePanel"></asp:Label>
                                <asp:Button runat="server" ID="updateLabel" OnClick="updateLabel_Click" Text="Click to Cause postback" />
                            </ContentTemplate>
                        </asp:UpdatePanel>
                        <asp:Button runat="server" ID="okBtn" Text="OK" />
                        <asp:LinkButton runat="server" ID="cancelBtn" Text="Cancel" />
                    </asp:Panel>
                    <ajaxToolkit:ModalPopupExtender runat="server" ID="modalPopupExtender1" TargetControlID="button1"
                        PopupControlID="modalPanel1" OkControlID="okBtn" CancelControlID="cancelBtn"
                        BackgroundCssClass="modalBackground">
                    </ajaxToolkit:ModalPopupExtender>
                </ContentTemplate>
            </asp:UpdatePanel>

Answer 2

您使用的是最新版本的 AjaxControlToolkit 吗？在 v16.1 中修复了以下错误：

调用 .Show() 的 ModalPopupExtender 不起作用

ModalPopupExtender calling .Show() does not work

c#

asp.net

modalpopupextender