ASP.NET保存文件对话框不允许我重置隐藏字段 [英] ASP.NET save file dialog is not allowing me to reset hidden Field

问题描述

我有一个用于下载文件的代码，它可以工作，但是在执行此代码之前，我会重置隐藏字段的值，但是问题是它没有被重置.请注意，当我停止调用下载方法时，将重置隐藏字段的值.那么如何在保存文件对话框出现之前强制重置?

这是代码示例:

I have a code for downloading a file and it works but before executing this code iam resetting the value of the hidden field, but the problem is that it is not being reset. Note that when i stop calling the download method the value of hidden field is reset. So how can i force resetting before save file dialog appears ?

Here is a sample of the code :

If HF_DoDownloadSample.Value = 1 Then
            HF_DoDownloadSample.Value = 0
            ScriptManager.RegisterStartupScript(UpdatePanel1, Me.UpdatePanel1.GetType(), "alert", "alert('your comment is posted and waiting for approval to appear for public');", True)
            DownloadSample()
        End If

注意:DownloadSample()是正在下载文件的函数.

Note: DownloadSample() is the function that is downloading the file.

推荐答案

尝试将隐藏字段放在更新面板中，并将其UpdateMode属性设置为Always.或者，如果您希望保留其属性为条件，则可以在下载之前调用更新面板的更新方法.

Try putting your hidden field in update panel, and set its UpdateMode property to Always. OR if u want to keep its propery as conditional, then you can call update method of update panel before your download.

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