How do I colaborate with Exchange though c#?

I want to be able to connect to some exchange account and add/remove given appointments. What do I use to do that? I found some solutions using CDOEX Library but it seems like it's  no longer supported with 2010.
joein610Asked:
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pchuiConnect With a Mentor Commented:
You forgot to put your statments in a function

using System;
using System.Net;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Exchange.WebServices.Data;
namespace ClassLibrary1
{
    public class Class1
    {
        void foo()
        {
            ExchangeService service = new ExchangeService();
            service.UseDefaultCredentials = true;
            service.Credentials = new WebCredentials("user1@contoso.com", "password");
        }
    }
}

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pchuiCommented:
If you are writing a server application, your best best is use the Exchange Web Services. EWS is intended to replace a myriad of partial Exchange APIs (CDO, CDOEX, ExOLEDB, WebDav, Exchange store event sinks). Even most MAPI tasks can be replaced with EWS.

Microsoft has created managed code wrappers to make EWS easier to work with:
http://msdn.microsoft.com/en-us/library/dd633709(v=exchg.80).aspx

Here's some sample code for creating appointments with the EWS managed API:
http://msdn.microsoft.com/en-us/library/dd633661(v=exchg.80).aspx

If you're writing a client application, then there's still the Outlook Object Model.
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joein610Author Commented:
I managed to install Exchange API but I get some errors:

using System;
using System.Net;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Exchange.WebServices.Data;
namespace ClassLibrary1
{
    public class Class1
    {
        ExchangeService service = new ExchangeService();
        service.UseDefaultCredentials = true;
        service.Credentials = new WebCredentials("user1@contoso.com", "password");



    }
}



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