How do you directly call a native function exported from a DLL?

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Varun Agrawal · Answer

Here’s a quick example of the DllImport attribute in action:
	using System.Runtime.InteropServices; \class C{	[DllImport(\"user32.dll\")]	public static extern int MessageBoxA(int h, string m, string c, int type);	public static int Main()	{		return MessageBoxA(0, \"Hello World!\", \"Caption\", 0);	}}
This example shows the minimum requirements for declaring a C# method 
that is implemented in a native DLL. The method C.MessageBoxA() is 
declared with the static and external modifiers, and has the DllImport 
attribute, which tells the compiler that the implementation comes from 
the user32.dll, using the default name of MessageBoxA. For more 
information, look at the Platform Invoke tutorial in the documentation.

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How do you directly call a native function exported from a DLL?

Varun Agrawal

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