How to use the CDOEX library to create a repeating meeting in Visual C#

This article was previously published under Q310557
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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 You receive unexpected errors when using ADO and ADO MD in a .NET Framework application
This article describes how to use the Microsoft Collaboration Data Objects (CDO) for Exchange 2000 (CDOEX) Library to create a repeating meeting in Microsoft Visual C#.
To use the CDOEX Library to create a repeating meeting in Visual C#, follow these steps:
  1. Start Microsoft Visual Studio .NET or Microsoft Visual Studio 2005.
  2. On the File menu, point to New, and then click Project.
  3. In the Visual C# Projectslist, click Console Application.
    Note In Visual Studio 2005, select Visual C#.

    By default, Class1.cs is created in Visual Studio .NET. Program.cs is created in Visual Studio 2005.
  4. Add a reference to the Microsoft CDO for Exchange 2000 Library. To do this, 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.
  5. If Visual Studio .NET or Visual Studio 2005 does not add a reference to the Microsoft ActiveX Data Objects 2.5 Library, repeat step 4 to add a reference to it.
  6. In the code window, replace the code with the following:
    using System;namespace Samples{	class Class1	{		static void Main(string[] args)		{			try 			{			CDO.Appointment oApp = new CDO.Appointment();                        // TODO:			string sURL = "http://ExchServer/Exchange/UserAlias/calendar";			ADODB.Connection oCn = new ADODB.Connection();			oCn.Provider = "exoledb.datasource";			oCn.Open(sURL, "", "", 0);  									CDO.Configuration iConfg = new CDO.Configuration();			ADODB.Fields oFields;			oFields = iConfg.Fields;			oFields[CDO.CdoCalendar.cdoTimeZoneIDURN].Value = CDO.CdoTimeZoneId.cdoPacific;			// Set Meeting Organizer			oFields[CDO.CdoConfiguration.cdoSendEmailAddress].Value = "";						oFields.Update();			oApp.Configuration = iConfg;			oApp.StartTime = Convert.ToDateTime("10/11/2001 10:00:00 AM");			oApp.EndTime = Convert.ToDateTime("10/11/2001 11:00:00 AM");			oApp.Location = "My Cube";			oApp.Subject = "Test: Create Meeting in C#";			oApp.TextBody = "Hello...";			// Add Recurring			// Every Thursday starting Today and run 3 times			CDO.IRecurrencePatterns iRPatters = oApp.RecurrencePatterns;			CDO.IRecurrencePattern iRPatter = iRPatters.Add("Add");			iRPatter.Frequency = CDO.CdoFrequency.cdoWeekly;			iRPatter.Interval = 1;    // 1 hour from 10 to 11			iRPatter.DaysOfWeek.Add(4);  // every Thursday			iRPatter.Instances = 3;			// Add Attendees			CDO.IAttendees iAtdees = oApp.Attendees;			CDO.IAttendee iAtdee = iAtdees.Add("");  // TODO:						CDO.ICalendarMessage iCalMsg = (CDO.ICalendarMessage)oApp.CreateRequest();			iCalMsg.Message.Send();						// Save to the Events Calendar			oApp.DataSource.SaveToContainer(sURL, null, 				ADODB.ConnectModeEnum.adModeReadWrite, 				ADODB.RecordCreateOptionsEnum.adCreateNonCollection, 				ADODB.RecordOpenOptionsEnum.adOpenSource, 				"", "");			oCn.Close();			oApp = null;			oCn = null;			oFields = null;			}			catch (Exception e)			{				Console.WriteLine("{0} Exception caught.", e);			}					}        }}
  7. Search for TODO in the code, and then modify the code for your environment.
  8. Build and then run the program.
  9. Make sure that the repeating meeting was created.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
813349 Support policy for Microsoft Exchange APIs with .NET Framework applications
Microsoft CDO for Exchange 2000 Library, create, recurring meeting

Article ID: 310557 - Last Review: 12/07/2015 08:01:59 - Revision: 3.3

Microsoft Visual C# 2005, Microsoft Visual C# .NET 2003 Standard Edition, Microsoft Visual C# .NET 2002 Standard Edition, Microsoft ActiveX Data Objects 2.5, Microsoft ActiveX Data Objects 2.6, Microsoft ActiveX Data Objects 2.7, Collaboration Data Objects for Exchange 2000, Microsoft Exchange 2000 Server Standard Edition

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