文件上传控件变为空白 [英] file upload control becoming blank

问题描述

asp.net中的文件上传仍然空白。

file upload in asp.net remaining blank after clicking ajax tab container .

推荐答案

试试这个... :)



http://forums.asp.net/t/1755112.aspx/1 [ ^ ]

Try this...:)

http://forums.asp.net/t/1755112.aspx/1[^]

为此，您必须在视图状态中保留先前的值并在回发后分配回来，检查它是否为空。

For that you have to keep previous value in view State & assign back after post back, checking if it is not null.

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