C# equivalent to VB.NET's Catch…When

Question

In VB.NET I often Catch…When:

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

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Answer 1

There's no equivalent to Catch…When in C#. You will really have to resort to an if statement inside your catch, then rethrow if your condition isn't fulfilled:

try
{
    …
}
catch (ArgumentNullException e)
{
    if ("SAMPLES" == e.ParamName.ToUpper())
    {
        … // handle exception
    }
    else
    {
        throw;  // condition not fulfilled, let someone else handle the exception
    } 
}