How to use the Cdosys.dll library to embed a message in a new message by using Visual C# (310221)



The information in this article applies to:

  • Microsoft Visual C# 2005
  • Microsoft Visual C# .NET (2003)
  • Microsoft Visual C# .NET (2002)
  • Microsoft Collaboration Data Objects for Windows 2000
  • ActiveX Data Objects (ADO) 2.5
  • ActiveX Data Objects (ADO) 2.6
  • ActiveX Data Objects (ADO) 2.7
  • Microsoft Internet Information Services 5.0
  • Microsoft Internet Information Services version 6.0

This article was previously published under Q310221

INTRODUCTION

This article describes how to use the Microsoft Collaboration Data Objects (CDO) for Windows 2000 library (Cdosys.dll) to embed a message in a new message. You can do this by using Microsoft Visual C#.

Note The Cdosys.dll library is also known as CDOSYS.

MORE INFORMATION

To use CDOSYS to embed a message in a new message, follow these steps:
  1. Start Microsoft Visual Studio .NET or Microsoft Visual Studio 2005.
  2. On the File menu, click New, and then click Project.
  3. Click Console Application in the Visual C# Projects types list.

    By default, Class1.cs is created.

    Note In Microsoft Visual C# 2005, you must click Console Application in the Visual C# list. By default, Program.cs is created.
  4. Add a reference to the Microsoft CDO For Windows 2000 Library. To do this, follow these steps:
    1. On the Project menu, click Add Reference.
    2. On the COM tab, locate Microsoft CDO For Windows 2000 Library, and then click Select.

      Note In Microsoft Visual C# 2005, you do not have to click Select.
    3. In the Add References dialog box, click OK to accept your selections.

      If you receive a message to generate wrappers for the libraries that you select, click Yes.
  5. In the Code window, replace all the code with the following code:
    namespace CdoSys
    {
    	using System;
    	class Class1
    	{
    		static void Main(string[] args)
    		{
    			try 
    			{			
    			CDO.DropDirectory iDropDir = new CDO.DropDirectory();
    			CDO.IMessages iMsgs;
    			CDO.IBodyPart iBp;
    			CDO.IMessage iEmbdded;
    			CDO.Message oMsg;
    			CDO.IDataSource iDsrc;
    
    			// Create a new message.
    			oMsg = new CDO.Message();
    			oMsg.From = "rhaddock@northwindtraders.com";
    			oMsg.To = "rhaddock@northwindtraders.com";
    			oMsg.Subject = "CDOSYS Send mail";
    			oMsg.TextBody = "Hello";
    			iBp = oMsg.BodyPart.AddBodyPart(-1);
    
    			// Embed the message.
    			iMsgs = iDropDir.GetMessages("C:\\Inetpub\\mailroot\\Drop");
    			Console.WriteLine("Messages Count : " + iMsgs.Count.ToString());
    
    			// Get first message.
    			iEmbdded = iMsgs[1];
    
    			// Embed the message in oMsg by using BodyPart.
    			iDsrc = iEmbdded.DataSource;
    			iDsrc.SaveToObject(iBp, "IBodyPart");
    
    
    			// Send mail.
    			oMsg.Send();
    
    			iEmbdded = null;
    			oMsg = null;
    			iBp = null;
    			iMsgs = null;
    			iDropDir = null;
    			}
    			catch (Exception e)
    			{
    				Console.WriteLine("{0} Exception caught.", e);
    			}
    			return;
    		}
             }
    }
  6. Press F5 to build and to run the program.

REFERENCES

For additional information about Microsoft Office development with Visual Studio, visit the following Microsoft Developer Network (MSDN) Web site: For additional information about how to use CDOSYS, click the following article numbers to view the articles in the Microsoft Knowledge Base:

310224 How to use the Cdosys.dll library to process mail in the Drop directory by using Visual C# .NET

310225 How to use the Cdosys.dll library to save a message to a file by using Visual C# .NET

310212 How to use the Cdosys.dll library to send an e-mail with attachments


Modification Type:MinorLast Reviewed:10/4/2006
Keywords:kbcode kbhowto KB310221 kbAudDeveloper