How to use the CDOEX Library to create a contact in Visual C#

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This article was previously published under Q310195

Caution ADO and ADO MD have not been fully tested in a Microsoft .NET Framework environment. They may cause intermittent issues, especially in service-based applications or in multithreaded applications. The techniques that are discussed in this article should only be used as a temporary measure during migration to ADO.NET. You should only use these techniques after you have conducted complete testing to make sure that there are no compatibility issues. Any issues that are caused by using ADO or ADO MD in this manner are unsupported. For more information, see the following article in the Microsoft Knowledge Base:

840667 � (http://support.microsoft.com/kb/840667/ ) You receive unexpected errors when using ADO and ADO MD in a .NET Framework application

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Summary

This article describes how to use the Microsoft Collaboration Data Objects (CDO) for Exchange 2000 (CDOEX) Library to create a contact in Microsoft Visual C#.

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More information

To use the CDOEX Library to create a contact in Visual C# .NET or Visual C# 2005, follow these steps:

Start Microsoft Visual Studio .NET or Microsoft Visual Studio 2005.
On the File menu, point to New, and then click Project.
In the Visual C# Projects list, click Console Application.

By default, Class1.cs is created.

Note In Microsoft Visual Studio 2005, click Console Application in the Visual C# list. By default, Program.cs is created.
Add a reference to the CDOEX Library. To do so, follow these steps:
1. On the Project menu, click Add Reference.
2. Click the COM tab, locate Microsoft CDO for Exchange 2000 Library, and then click Select.
  
  Note In Visual Studio 2005, you do not have to click Select.
3. In the Add References dialog box, click OK.
4. If you are prompted to generate wrappers for the libraries that you selected, click Yes.
Note CDOEX is supported only through a COM interop.
Repeat step 4 to add a reference to the Microsoft ActiveX Data Objects 2.5 Library.

In the code window, replace the code with the following:

using System;

namespace Samples
{
	class Class1
	{
		static void Main(string[] args)
		{
			try 
			{
			CDO.Person oPerson = new CDO.Person();

                        // TODO: Replace with your Contacts folder URL
			string sURL = "Http://<ExchServer>/Exchange/<UserAlias>/Contacts";
 			
			ADODB.Connection oCn = new ADODB.Connection();
			oCn.Provider = "exoledb.datasource";

			oCn.Open(sURL, "", "", 0);  
			if(oCn.State == 1)
			{
				Console.WriteLine("Connection Successful");
			}
			else
			{
				Console.WriteLine("Connection Failed");
				return;
			}			
			
			oPerson.Title = "Engineer";
			oPerson.FirstName = "First";
			oPerson.LastName = "Last";
			oPerson.Company = "CompanyName";
			oPerson.Email = "someone@example.com";
			
			oPerson.DataSource.SaveToContainer(sURL, null, 
				ADODB.ConnectModeEnum.adModeReadWrite, 
				ADODB.RecordCreateOptionsEnum.adCreateNonCollection, 
				ADODB.RecordOpenOptionsEnum.adOpenSource, 
				"", "");

			oCn.Close();

			oPerson = null;
			oCn = null;
			}
			catch (Exception e)
			{
				Console.WriteLine("{0} Exception caught.", e);
			}			
		}
        }
}