How do you get a text description of the last Win32 error?

[Will Pittenger]

I see System.Runtime.InteropServices.Marshal.GetLastWind 32Error, but I see
no method to get a string based on that error. Do I need to use the Win32
function FormatMessage? If so, that defeats the purpose of C# having
GetLastWin32Error. Since FormatMessage does so many things besides look up
error messages, it tends to be a bit of a burden even in C++. I hate to
think of what calling it would be like under C#.
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Will Pittenger
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[Mattias Sjögren]

Will,

I see System.Runtime.InteropServices.Marshal.GetLastWind 32Error, but I see
no method to get a string based on that error. Do I need to use the Win32
function FormatMessage?

No, you can do

Win32Exception ex = new Win32Exception();
string errMsg = ex.Message;

The Win32Exception class internally checks GetLastWin32Error and
retrieves the corresponding error message.

Mattias

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Mattias Sjögren [MVP] mattias @ mvps.org
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