Question

我有一个AsyncFileUpload和一个列出上传文件的Repeater。当我选择一个文件时，它曾尝试上传两次。我有一个重复的文件检查.cs文件，所以它始终显示＆＃34;文件已经存在＆＃34;错误信息。我搜索了一个答案，似乎共识是使用AsyncFileUpload的IsUploading并且如果条件为true则返回而不执行另一个__doPostBack（＆＃34; ...＆＃34;）。

当我在这个JS函数中设置断点时，我得到IsUploading（或isUploading）是未定义的，因此它不会返回，因为它应该仍然上传两次。

我尝试删除＆＃34; ClientIDMode =＆＃39; Auto＆＃39;＆＃34;但它没有帮助。

<ajaxToolkit:AsyncFileUpload
    runat="server"
    ClientIDMode="AutoID" 
    ID="fuDocument" 
    Width="380" 
    UploadingBackColor="#CCFFFF" 
    ThrobberID="myThrobber" 
    UploaderStyle="Modern" 
    OnClientUploadStarted="onClientUploadStart"
    OnClientUploadComplete="onClientUploadComplete" 
    OnClientUploadError="onClientUploadError"
    onuploadedcomplete="fuDocument_UploadedComplete" />
<span id="spnUploadInfo"></span>

function onClientUploadStart(sender, e) {
    var spnUploadInfo = document.getElementById('spnUploadInfo');
    spnUploadInfo.innerHTML = 'Please wait while uploading ' + e._fileName;
}

function onClientUploadError(sender, e) {
    var spnUploadInfo = document.getElementById('spnUploadInfo');
    spnUploadInfo.className = "Error";
    spnUploadInfo.innerHTML = 'An error occurred during uploading. "' + e.get_errorMessage();
}

function onClientUploadComplete(sender, e) {debugger
    var fu = $get("<%=fuDocument.ClientID%>")
    if (fu.isUploading) return;
    // Also tried "if (fuDocument.IsUploading)" with ClientIDMode set to Auto
    var spnUploadInfo = document.getElementById('spnUploadInfo');
    spnUploadInfo.innerHTML = "...";
    __doPostBack('upnlAtt', '');
}

AsyncFileUpload IsUploading未定义

0 个答案: