保留FileUpload控件值 [英] Retain value in fileupload control

问题描述

我写一个文件上传应用程序。因此，它包含文本和一个FileUpload键名
控制。保存按钮是用来保存键名和文件。我的问题是，当我选择FileUpload控件一个文件，我DONOT输入键名文本框中的任何值，然后点击保存按钮，将显示一条消息输入键名，但FileUpload控件被清除。如何能留住在FileUpload控件值？

I am writing a file upload application. So it contains a keyname in textbox and a fileupload control. A save button is used to save the keyname and the file. My issue is when I select a file in fileupload control and I donot enter any value in keyname textbox and click on save button, a message is shown 'enter a keyname' but the fileupload control is cleared. How can retain the value in the fileupload control?

推荐答案

您不能保留FileUpload控件值。这是因为安全原因。你可以使用的RequiredFieldValidator的键名的文本框。

You can't retain value in FileUpload control. This is because of security reasons. you can use RequiredFieldValidator for keyname textbox.

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