Question

我在更新面板和转发器控件中有文件上传控件。中继器控件有一个图像按钮。按下此按钮时，将发生回发，并且文件上载控件没有值。当回发发生时，我使用回发触发器在会话中存储fileupload控件。在页面加载时，我们从会话分配fileupload控件但Fileupload控件显示没有选择文件而不是选定的文件名。

              <tr>
                <td>
                 <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                                    <ContentTemplate>
                                        <asp:FileUpload ID="FileUpload1" runat="server" CssClass="text"/>

                                    </ContentTemplate>
                                    <Triggers>
                                       <asp:PostBackTrigger ControlID="ApplicationUrl_Repeater" />
                                    </Triggers>
                                </asp:UpdatePanel>
                            </td>
                        </tr>

                        <tr runat="server" visible="false" id="ApplicationUrl">
                                                          <td>
                                <asp:Repeater ID="ApplicationUrl_Repeater" runat="server" OnItemCommand="RepeaterItemCommmand11" OnItemDataBound="RepeaterItemDataBound11" Visible="True">
                                    <ItemTemplate>
                                        <table>
                                            <tr>
                                                <td>
                                                    <asp:TextBox ID="Repeater_ApplicationUrl_TxtBox" Text='<%# Eval("Url") %>' runat="server" CssClass="text" Width="200" MaxLength="1024"></asp:TextBox>
                                                    <asp:DropDownList ID="Repeater_ApplicationType_DropdownList" runat="server"></asp:DropDownList>
                                                    <asp:ImageButton ID="Repeater_ImgButton" runat="server" CssClass="AddIcon" Height="15px" ImageAlign="Bottom" />
                                                </td>
                                            </tr>
                                        </table>
                                    </ItemTemplate>
                                </asp:Repeater>
                            </td>
                      </tr>


 protected void RepeaterItemCommmand11(object source, RepeaterCommandEventArgs e)
    {
       if (Session["FileUpload1"] == null && FileUpload1.HasFile)
        {
            Session["FileUpload1"] = FileUpload1;
        }
    }

 protected void Page_Load(object sender, EventArgs e)
 {
     if(Page.IsPostBack)
     {
         if (Session["FileUpload1"] != null && !FileUpload1.HasFile)
        {
            FileUpload1 = (FileUpload)Session["FileUpload1"];
            Session.Remove("FileUpload1");
        }
     }
 }

我希望fileupload控件在回发后显示文件名。请建议。

提前致谢。

文件上载控件在asp.net

0 个答案: