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Using Mailslots for Interprocess Communication

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17 Oct 2004CPOL21 min read 147.4K   6.8K   90  
How to use mailslots to communicate between processes
using System;
using System.ComponentModel;
using System.Runtime.InteropServices;

namespace System.Native
{

	public class NativeException : Exception
	{
		/// <summary>
		/// Checks for last error
		/// http://msdn.microsoft.com/library/en-us/debug/base/system_error_codes.asp
		/// </summary>
		/// <param name="FunctionName">Function name for error message.</param>
		/// <param name="DLLName">DLL name for error message</param>
		public static NativeException GetException ( string FunctionName, string DLLName )
		{
			const string MESSAGE = "Error in Native Function {0}-{1}. Error Code {2}.\nError Description : {3}\n";
			int errorCode;
			errorCode = Marshal.GetLastWin32Error();
			if ( errorCode == 0 )
			{
				return null;
			}
			Win32Exception e = new Win32Exception(errorCode);
			return new NativeException(String.Format(MESSAGE,DLLName,FunctionName,errorCode,e.Message),e);
		}

		/// <summary>
		/// Native error code
		/// </summary>
		private int errorCode;

		public NativeException ( string Message, int ErrorCode )
			: base( Message )
		{
			this.errorCode = errorCode;
		}

		public NativeException ( string Message, Win32Exception e )
			: base( Message,e)
		{
			this.errorCode = e.NativeErrorCode;
		}

		/// <summary>
		/// Gets the error code
		/// </summary>
		public int ErrorCode
		{
			get
			{
				return this.errorCode;
			}

		}



	}

	
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
United States United States
I've been programming for 35 years - started in machine language on the National Semiconductor SC/MP chip, moved via the 8080 to the Z80 - graduated through HP Rocky Mountain Basic and HPL - then to C and C++ and now C#.

I used (30 or so years ago when I worked for Hewlett Packard) to repair HP Oscilloscopes and Spectrum Analysers - for a while there I was the one repairing DC to daylight SpecAns in the Asia Pacific area.

Afterward I was the fourth team member added to the Australia Post EPOS project at Unisys Australia. We grew to become an A$400 million project. I wrote a few device drivers for the project under Microsoft OS/2 v 1.3 - did hardware qualification and was part of the rollout team dealing directly with the customer.

Born and bred in Melbourne Australia, now living in Scottsdale Arizona USA, became a US Citizen on September 29th, 2006.

I work for a medical insurance broker, learning how to create ASP.NET websites in VB.Net and C#. It's all good.

Oh, I'm also a Kentucky Colonel. http://www.kycolonels.org

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