Here is a a quick list of changes you need to remember while creating workflow assemblies in CRM 4.0 or CRM 2011, as found here.

1. References

CRM 4.0

using System.Workflow.Activities;

using System.Workflow.ComponentModel;

using System.Workflow.ComponentModel.Compiler;

using Microsoft.Crm.Sdk;

using Microsoft.Crm.Sdk.Query;

using Microsoft.Crm.SdkTypeProxy;

using Microsoft.Crm.Workflow;

CRM 2011

using System.Activities;

using Microsoft.Crm.Sdk.Messages;

using Microsoft.Xrm.Sdk;

using Microsoft.Xrm.Sdk.Workflow;

2. Base Class

Base class definition has been changed from  SequenceActivity to CodeActivity.

CRM 4.0: In CRM 4.0 we have to specify both Workflow name and Workflowactivitygroupname in the code as written in the following code.

[CrmWorkflowActivity(“My Custom Workflow”, “CRM Workflow”)]

public class MyCustomWF: SequenceActivity

CRM 2011: In CRM 2011 that is done in different way.

public class MyCustomWF: CodeActivity

Both Workflow name and Workflowactivitygroupname can be specified at the time of registering the assembly

3. Execute Method

The overridden Execute method remains the same except parameter and return type.

CRM 4.0

protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)

CRM 2011

protected override void Execute(CodeActivityContext executionContext)

4. Create service

CRM 4.0

IContextService contextService = (IContextService)executionContext.GetService(typeof(IContextService));

IWorkflowContext context = contextService.Context;

ICrmService crmService = context.CreateCrmService();

CRM 2011

IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();

IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();

IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);

5. INPUT Parameters

CRM 4.0

Declaration: how to initialize the input parameter

// specified dependency property

public static DependencyProperty CaseIDProperty = DependencyProperty.Register(“CaseID”, typeof(Lookup), typeof(TotalTaskRetrieval));

// Specified Input property

[CrmInput(“Enter Case “)]

// Set the reference Target for Property created


// Property Defined for caseId

public Lookup CaseID




return (Lookup)base.GetValue(CaseIDProperty);




base.SetValue(CaseIDProperty, value);



Use: Access the input parameter declared above as,

Guid caseid=CaseID.Value

CRM 2011

Declaration: how to initialize the input parameter

[Input(“Enter Case “)]

[ReferenceTarget(“incident “)]

[Default(“3B036E3E-94F9-DE11-B508-00155DBA2902″, ” incident “)]

public InArgument<EntityReference> CaseID { get; set; }

Use: Access the input parameter declared above as,

Guid caseid = CaseID.Get<EntityReference>(executionContext).Id

6. OUTPUT  Parameters

CRM 4.0


public CrmMoney Sum




return (CrmMoney)base.GetValue(SumProperty);




base.SetValue(SumProperty , value);



CRM 2011



public OutArgument<Money> Sum { get; set; }



  1. Hi Maggy,

    Sorry for the late reply. These may work. Check and let us know.

    1. If you are using the Early bound programming method, make sure you ‘use’ the namespace of the generated code file in your code.
    2. Add “_service.enableprobytype()” in your code.
    3. The service context name mentioned while generating the Crmsrvcutil should be initiated properly if you are using “Context.UpdateObject(entityname)” or Context.AddObject(entityname)”

  2. i get the follwing error:
    Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: Invalid default value: The entity Incident doesn’t exist. Property: Case

    Invalid default value: The entity Incident doesn’t exist. Property: Case


    Invalid default value: The entity Incident doesn’t exist. Property: Case

    Server stack trace:
    at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
    at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
    at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
    at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

    Exception rethrown at [0]:
    at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
    at Microsoft.Xrm.Sdk.IOrganizationService.Update(Entity entity)
    at Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.UpdateCore(Entity entity)
    at Microsoft.Xrm.Sdk.Client.OrganizationServiceProxy.Update(Entity entity)
    at PluginRegistrationTool.RegistrationHelper.UpdateAssembly(CrmOrganization org, String pathToAssembly, CrmPluginAssembly assembly, PluginType[] type) in C:\Users\30000352\Downloads\MicrosoftDynamicsCRM2011SDK (2)\sdk\tools\pluginregistration\RegistrationHelper.cs:line 263
    at PluginRegistrationTool.PluginRegistrationForm.btnRegister_Click(Object sender, EventArgs e) in C:\Users\30000352\Downloads\MicrosoftDynamicsCRM2011SDK (2)\sdk\tools\pluginregistration\PluginRegistrationForm.cs:line 382

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