C＃相当于VB.NET的Catch ... When [英] C# equivalent to VB.NET's Catch...When

问题描述

在VB.NET中，我经常 Catch ...当：

In VB.NET I often Catch…When:

Try
    …
Catch e As ArgumentNullException When e.ParamName.ToUpper() = "SAMPLES"
    …
End Try

是否有相当于的C＃Catch ...当？

如果可能，我不想诉诸使用，如果 catch 中的 p>

I don't want to resort to using an if statement inside a catch if possible.

推荐答案

此功能已被C＃6公布。现在可以写

This functionality was announced for C# 6. It is now possible to write

try { … }
catch (MyException e) when (myfilter(e))
{
    …
}

您可以下载 Visual Studio 2015 现在检查一下，或者等待官方发布。

You can download the preview of Visual Studio 2015 now to check this out, or wait for the official release.

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