第一次单击文件上传不起作用 [英] First time click on fileupload not working

问题描述

我正在updatepanel中使用fileupload控件.我添加了fileupload按钮来触发标记以进行完全回发.我还将该按钮添加到了

i am using fileupload control in updatepanel.I have added the fileupload button to trigger tag for full postback. i also added the button to

ScriptManager.GetCurrent(this.Page).RegisterPostBackControl(UploadButton);

获取完整的回发.

现在的问题是，第一次单击后，上传按钮不起作用，从第二次单击开始，上传按钮正常工作.

for getting full postback.

Now the issue is , the upload button does not work the first its clicked, from 2nd time click onwards the upload button works properly.


how to solve this above issue.

推荐答案

请尝试避免在UpdatePanel中使用FileUpload控件，因为它涉及回发问题.请改用异步文件上载控件.您可以在此处异步文件上传 [

Try to avoid using FileUpload control inside UpdatePanel, as it involves post back problems with it. Use asynchronous file upload control instead. You can find a nice sample code here Asynchronous File Upload[^]

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