问IO.File.Delete随机UnauthorizedAccessException

EN

' Convert MP3
' First, copy out converter
Dim Path = New IO.FileInfo(SoundPath)
Try
    My.Computer.FileSystem.WriteAllBytes(Application.StartupPath + "\converter.exe", My.Resources.madplay, False)
Catch ex As Exception
    MessageBox.Show(ex.ToString, "Report", MessageBoxButtons.OK)
    Exit Sub
End Try
' Set up process
Dim MAD As New Process
' Set process info
Dim output As String = IO.Path.GetFileNameWithoutExtension(Path.FullName) + ".wav"
Dim input As String = Path.FullName
Dim adjust As String = barVolumeAdjust.Value.ToString
Dim hz As String = "15000"
With (MAD.StartInfo)
    .FileName = Application.StartupPath + "\converter.exe"
    .Arguments = "-v -a " + adjust + " -R " + hz + " -o """ + output + """ """ + input + """"
    .UseShellExecute = False
    .RedirectStandardInput = True
    .RedirectStandardError = True
    .RedirectStandardOutput = True
    .CreateNoWindow = True
End With
' Start
MAD.Start()
' Update title with output
Dim Line As String = MAD.StandardError.ReadLine
While Not Line Is Nothing
    Me.Text = Line
    Line = MAD.StandardError.ReadLine
End While
' Stop
MAD.Close()
' Delete MAD
Try
    IO.File.Delete(Application.StartupPath + "\converter.exe")
Catch ex As Exception
    MessageBox.Show(ex.ToString, "Report", MessageBoxButtons.OK)
End Try