获取UpdatePanel外部的TextBox文本

Question

   <asp:TextBox ID="TextBox1" runat="server" Height="30px" Width="700px" placeholder="Enter Title" ></asp:TextBox>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>

                            <asp:AjaxFileUpload ID="AjaxUploadImages" runat="server" AllowedFileTypes="jpg,jpeg,png,gif" 
                                onuploadcomplete="AjaxUploadImages_UploadComplete"/>

            </ContentTemplate>
        </asp:UpdatePanel>

我想在OnUploadComplete事件中获取TextBox1的文本，如下所示 -

    protected void AjaxUploadImages_UploadComplete(object sender, AjaxControlToolkit.AjaxFileUploadEventArgs e)
    {
       string path = Server.MapPath("~/images/") + e.FileName;
       AjaxUploadImages.SaveAs(path);
       string content = TextBox1.Text.ToString();
    }

Answer 1

 protected void AjaxUploadImages_UploadComplete(object sender,AjaxControlToolkit.AjaxFileUploadEventArgs e)
    {
       string path = Server.MapPath("~/images/") + e.FileName;
       AjaxUploadImages.SaveAs(path);
       string content = TextBox1.Text.ToString();
    }