有关GridView中ImageButton控件后台代码弹出对话框如何写

Question

    这是我前台的   <asp:GridView>  的相关信息，其中<asp:ImageButton ID="ImageButton2" CommandName="UserUpdate" runat="server" ImageUrl="~/images/edit.PNG" CommandArgument='<%# Eval("userid") %>' /> 这句是用来转向修改界面的。    <asp:GridView ID="gvUserManage" runat="server" AllowPaging="True" Width="100%" CellPadding="1"
                            BorderWidth="1px" AutoGenerateColumns="False" RowStyle-HorizontalAlign="Center"
                            CssClass="GridViewStyle" PageSize="10" OnRowDataBound="gvUserManage_RowDataBound" 
                            OnRowDeleting="gvUserManage_RowDeleting" 
                            onrowcommand="gvUserManage_RowCommand"> 
                          
                           
                            <PagerStyle CssClass="GridViewPagerStyle" />
                            <HeaderStyle CssClass="GridViewHeaderStyle" />
                            <RowStyle CssClass="GridViewRowStyle" Height="25px" />
                            <AlternatingRowStyle CssClass="GridViewAlternatingRowStyle" />
                            <PagerSettings FirstPageText="首页" LastPageText="最后 1 页" NextPageText="下 1 页" PreviousPageText="上 1 页"
                                Mode="NumericFirstLast" />
                            <EmptyDataTemplate>
                                <font size="4pt">无数据！</font></EmptyDataTemplate>
                            <Columns>
                                <asp:TemplateField HeaderText="序号">
                                    <HeaderStyle HorizontalAlign="Center" Width="40px"></HeaderStyle>
                                    <ItemTemplate>
                                        <%# gvUserManage.PageIndex * gvUserManage.PageSize + gvUserManage.Rows.Count + 1%>
                                    </ItemTemplate>
                                </asp:TemplateField>
                                <asp:BoundField DataField="USERNAME" HeaderText="用户名" SortExpression="Sex" ItemStyle-HorizontalAlign="Center">
                                    <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                </asp:BoundField>
                                <asp:BoundField DataField="USERJC" HeaderText="登录名" SortExpression="Sex" ItemStyle-HorizontalAlign="Center">
                                    <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                </asp:BoundField>
                                <asp:BoundField DataField="rolename" HeaderText="角色" SortExpression="Sex" ItemStyle-HorizontalAlign="Center">
                                    <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                </asp:BoundField>
                                <asp:TemplateField HeaderText="操作" ItemStyle-HorizontalAlign="Center">
                                    <ItemTemplate>
                                        <asp:ImageButton ID="ImageButton2" CommandName="UserUpdate" runat="server" ImageUrl="~/images/edit.PNG" CommandArgument='<%# Eval("userid") %>' 
                                        OnClientClick="UserUpdate()"/> 
                                           &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                                    
                                    
                                        <asp:ImageButton ID="ImageButton1" CommandName="Delete" runat="server" ImageUrl="~/images/delete.PNG"
                                            OnClientClick="return confirm('你确认要删除此用户吗?');" />
                                    </ItemTemplate>
                                    <ItemStyle HorizontalAlign="Center"></ItemStyle>
                                </asp:TemplateField>
                            </Columns>
                            <PagerTemplate>
                                <table width="100%" style="font-size: 12px;">
                                    <tr>
                                        <td style="text-align: right">
                                            第<asp:Label ID="lblPageIndex" runat="server" Text='<%# ((GridView)Container.Parent.Parent).PageIndex + 1 %>'></asp:Label>
                                            页 /共<asp:Label ID="lblPageCount" runat="server" Text='<%# ((GridView)Container.Parent.Parent).PageCount %>'></asp:Label>
                                            页&nbsp;&nbsp;
                                            <asp:LinkButton ID="btnFirst" runat="server" CausesValidation="False" CommandName="Page"
                                                Text="首页" CommandArgument="first" OnClick="btnPage_Click">
                                            </asp:LinkButton>
                                            <asp:LinkButton ID="btnPrev" runat="server" CausesValidation="False" CommandName="Page"
                                                Text="上一页" CommandArgument="prev" OnClick="btnPage_Click">
                                            </asp:LinkButton>
                                            <asp:LinkButton ID="btnNext" runat="server" CausesValidation="False" CommandName="Page"
                                                Text="下一页" CommandArgument="next" OnClick="btnPage_Click">
                                            </asp:LinkButton>
                                            <asp:LinkButton ID="btnLast" runat="server" CausesValidation="False" CommandName="Page"
                                                Text="尾页" CommandArgument="last" OnClick="btnPage_Click">
                                            </asp:LinkButton>
                                            <asp:TextBox ID="txtNewPageIndex" runat="server" Text='<%# ((GridView)Container.Parent.Parent).PageIndex + 1 %>'
                                                Width="20px" AutoPostBack="True"></asp:TextBox>
                                            <asp:LinkButton ID="btnGo" runat="server" CausesValidation="False" CommandArgument="go"
                                                CommandName="Page" Text="GO" OnClick="btnPage_Click"></asp:LinkButton>
                                        </td>
                                    </tr>
                                </table>
                            </PagerTemplate>
                        </asp:GridView>这是后台代码：
 #region 转发至修改页面
        protected void gvUserManage_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            ///转发至修改页面
            if (e.CommandName.ToString() == "UserUpdate")
            {
                
                Response.Redirect("UpdateUser.aspx?userid="+e.CommandArgument.ToString());
                          }
        }
        #endregion  现在我想弹出一个修改的对话框而不是一个新的界面，于是我将
    Response.Redirect("UpdateUser.aspx?userid="+e.CommandArgument.ToString());
改为  Response.Redirect("<script type='text/javascript'>window.showModalDialog('../WebApp/System/UpdateUser.aspx? userid=' + e.CommandArgument.ToString(), 'window', 'dialogWidth:400px;DialogHeight=405px;status:no;scroll=yes;help:no')</script>");  
    其中WebApp是我项目里的一级文件，System是它下面的二级文件，UpdateUser是System下面的一个.aspx.
    运行结果出现乱码，我估计是文件路径的问题，试了好多变还是没改过来，求解，在线等！

Answer 1

Response.Write("<script type='text/javascript'>window.showModalDialog('../WebApp/System/UpdateUser.aspx? userid=' + e.CommandArgument.ToString(), 'window', 'dialogWidth:400px;DialogHeight=405px;status:no;scroll=yes;help:no')</script>");