ajax工具包图片上传没有发生

Question

我在页面上传了一个ajaxtoolkit文件

<ajax:HtmlEditorExtender runat="server" ID="htmEditor" 

DisplaySourceTab="true" TargetControlID="txtWelcomenote"  

OnImageUploadComplete="htmEdtior_OnUploadComplete">

后面的代码是

protected void htmEdtior_OnUploadComplete(object sender, AjaxFileUploadEventArgs e)
        {
            // Generate file path
            string filePath = "~/Images/" + e.FileName;

            // Save uploaded file to the file system
            var ajaxFileUpload = (AjaxFileUpload)sender;
            ajaxFileUpload.SaveAs(MapPath(filePath));

            // Update client with saved image path
            e.PostedUrl = Page.ResolveUrl(filePath);
        }

我的问题是 当我试图上传图片时，它没有上传 而且事件也没有解雇。我也从那调试过 我正在寻找额外的查询字符串，如 contextkey = {DA8BEDC8-B952-4d5d-8CC2-59FE922E2923} 可能是什么问题呢？？什么是解决方案？请帮帮我一些