Description
[Note: In C#, an entry point is defined through the Main() method. For additional information about entry points, see Partition II of the CLI Specification.]
Example
using System;
using System.Runtime.InteropServices;
/// <summary>
/// Shows why a EntryPointNotFoundException is thrown
/// and how to handle it
/// </summary>
public class EntryPointNotFoundExceptionSample
{
// This wrapper causes an exception to be thrown. EntryPoint, CharSet, and
// ExactSpelling fields are mismatched.
[DllImport( "User32.dll", EntryPoint="MessageBox",
CharSet=CharSet.Ansi, ExactSpelling=true )]
public static extern int MsgBox3( int hWnd, String text,
String caption, uint type );
public static void Main()
{
try
{
MsgBox3( 0, "No such function", "MsgBox Sample", 0 );
}
catch (EntryPointNotFoundException e)
{
Console.WriteLine("Caught exception: {0} - '{1}'", e.GetType().Name,
e.Message);
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("Press Enter to continue");
Console.ReadLine();
}
}
The output is
Caught exception: EntryPointNotFoundException - 'Unable to find an entry point n
amed MessageBox in DLL User32.dll.'
Press Enter to continue
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