为什么.NET Framework 2.0上缺少AutoresetEvent.WaitOne重载

如果您遇到了一个异常情况,有些机器似乎在很长一段时间内没有应用Windows更新,而.NET Framework 2.0中没有可用的特定重载。

如果您调用AutoResetEvent.WaitOne(int32,boolean),就可以了。

当您调用此方法时,它会导致应用程序完全崩溃,而不会捕获异常等。

我想出了一个解决方法,但想知道人们是如何鼓励他们的用户将机器更新到最新的service Pack等的。?

最好接受他们不会相应地更新和编码,或者通过不让程序启动来强制他们更新。

Dim au As System.Threading.AutoResetEvent
au = New System.Threading.AutoResetEvent(False)

Dim themethods() As MethodInfo
themethods = au.GetType.GetMethods()
Dim found As Boolean

For Each m As MethodInfo In themethods
    If String.Equals(m.Name, "WaitOne", StringComparison.OrdinalIgnoreCase) Then
        Dim params() As ParameterInfo
        params = m.GetParameters
        If params.Length = 1 Then
            If params(0).ParameterType Is GetType(Integer) Then
                found = True
                Exit For
            End If
        End If
    End If
Next

Dim allowRun As Boolean = True

If Not found Then
    ApplicationLog.Write("This system is running an old version of the Microsoft .NET Framework, please update with Windows Update to prevent errors.")
    If MessageBox.Show("This system is running an old version of the Microsoft .NET Framework, please update with Windows Update to prevent errors.", "Old Version of .NET Framework", MessageBoxButtons.OKCancel, MessageBoxIcon.Error, MessageBoxDefaultButton.Button2) = DialogResult.Cancel Then
        allowRun = False
    End If
End If