Set Organizer for appointment or working with ActivityParty in CRM 2011

Just posting a sample code for creating appointment record in CRM 2011.

Uri organizationUri = new Uri(<a href="http://CRM2011/orgName/XRMServices/2011/Organization.svc">http://CRM2011/orgName/XRMServices/2011/Organization.svc</a>);
Uri homeRealmUri = null;
ClientCredentials credentials = new ClientCredentials();
credentials.Windows.ClientCredential = new System.Net.NetworkCredential("administrator", "password", "contoso");

OrganizationServiceProxy orgProxy = new OrganizationServiceProxy(organizationUri, homeRealmUri, credentials, null);
// Get the IOrganizationService
IOrganizationService orgService = (IOrganizationService)orgProxy;

// create entity record
Entity appointment = new Entity();
appointment.LogicalName = "appointment";
appointment.Attributes["subject"] = "App at " + DateTime.Now.ToString();
appointment.Attributes["scheduledstart"] = new DateTime();
appointment.Attributes["scheduledstart"] = DateTime.Now.AddDays(1);
appointment.Attributes["scheduledend"] = new DateTime();
appointment.Attributes["scheduledend"] = DateTime.Now.AddDays(1).AddHours(2);

// create activity party record
Entity activityParty = new Entity();
activityParty.LogicalName = "activityparty";
activityParty.Attributes["partyid"]=new EntityReference("systemuser",new Guid("userGuid"));
EntityCollection colAP = new EntityCollection();

appointment.Attributes["organizer"] = new EntityCollection();
appointment.Attributes["organizer"] = colAP;

// If we use the bookrequest class it will fail
// and gives ResourceBusy error in case of scheduling conflict
// so simply create the appointment without using book request
// to make it appear in the calendar

//   BookRequest bookRequest = new BookRequest();
//   bookRequest.Target = appointment;

//  BookResponse booked = (BookResponse)orgService.Execute(bookRequest);
string appGuid = orgService.Create(appointment).ToString();
catch (Exception ex)
string exMessage = ex.Message;

Hope it helps !

Author: Nishant Rana

I love working in and sharing everything about Microsoft.NET technology !

4 thoughts on “Set Organizer for appointment or working with ActivityParty in CRM 2011”

  1. I got this below error

    System.ServiceModel.FaultException`1[Microsoft.Xrm.Sdk.OrganizationServiceFault]: appointment With Id = ecf5bd3b-4fcf-4c1b-846a-8e7da4b90f08 Does Not Exist (Fault Detail is equal to Microsoft.Xrm.Sdk.OrganizationServiceFault).


  2. Hi,
    I am getting Error as:
    An exception of type ‘System.FormatException’ occurred in mscorlib.dll but was not handled in user code
    Additional information: Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).

    This error comes on “activityParty.Attributes[“partyid”]=new EntityReference(“systemuser”,new Guid(“userGuid”));”
    Please help!!


  3. HI,
    Thanks , it worked by replacing that line with
    WhoAmIRequest userRequest = new WhoAmIRequest();
    WhoAmIResponse userResponse = (WhoAmIResponse)serviceProxy.Execute(userRequest);
    activityParty.Attributes[“partyid”] = new EntityReference(“systemuser”, userResponse.UserId);


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