vb.net 下载后VB重置进度条值
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时间：2020-09-17 13:30:02 来源:igfitidea点击:
VB reset progress bar value after download
提问by Thomja
As a bit of practice I am trying to get my program to download a file via the progress bar. It downloads it fine and the progress bar follows but the problem is that after the download is complete it wont reset. This is the code for the button and the bar.
作为一点练习，我试图让我的程序通过进度条下载文件。它下载得很好，进度条会跟随，但问题是下载完成后它不会重置。这是按钮和栏的代码。
Private Sub Button1_Click_1(sender As System.Object, e As System.EventArgs) Handles Button1.Click
WC.DownloadFileAsync(New Uri("imageurlhere"), "c:\myfile.jpg")
If ProgressBar1.Value = ProgressBar1.Maximum Then
ProgressBar1.Value = ProgressBar1.Minimum
End If
End Sub
Private Sub WC_DownloadProgressChanged(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs) Handles WC.DownloadProgressChanged
ProgressBar1.Value = e.ProgressPercentage
End Sub
采纳答案by matzone
Try this
尝试这个
Private Sub Button1_Click_1(sender As System.Object, e As System.EventArgs) Handles Button1.Click
WC.DownloadFileAsync(New Uri("imageurlhere"), "c:\myfile.jpg")
End Sub
Private Sub WC_DownloadProgressChanged(ByVal sender As Object, ByVal e As DownloadProgressChangedEventArgs) Handles WC.DownloadProgressChanged
ProgressBar1.Value = e.ProgressPercentage
If ProgressBar1.Value = ProgressBar1.Maximum Then
ProgressBar1.Value = ProgressBar1.Minimum
End If
End Sub
