Work with Assign SDK message in CRM 2011 plugin - manage logic based on the Assignee Team (CRM 2011)

In the following example I use the Assign message in CRM 2011 to manage some custom logic based on the assignee Team.
The plugin is registered in Pre-Operation stage on the Task entity and uses early-bound entity classes.
However it is trivial reuse the same logic on another type of entity, use late-bound entity classes, or operate on other type of assignee.

protected void ExecutePreTaskAssign(LocalPluginContext localContext)

{

    if (localContext == null)

    {

        throw new ArgumentNullException("localContext");

    }

    IPluginExecutionContext context = localContext.PluginExecutionContext;

    IOrganizationService service = localContext.OrganizationService;

    try

    {

        //Check if context contains the "Target" parameter and that it
          is an EntityReference

        if (context.InputParameters.Contains("Target") && 
                     context.InputParameters["Target"] is EntityReference)

        {

            EntityReference targetEntity =    

                     (EntityReference)context.InputParameters["Target"];

            //Check if the entity type is Task

            if (targetEntity.LogicalName != "task")

            { return; }

            //Check if context contains the "Assignee" parameter

            if (context.InputParameters.Contains("Assignee"))

            {

                EntityReference assigneeRef = 

                       (EntityReference)context.InputParameters["Assignee"];

                //Check if the "Assignee" is a team

                if (assigneeRef.LogicalName == "team")

                {

                    Team team;

                    //Retrieve the team with all properties

                    team = service.Retrieve(assigneeRef.LogicalName, 
                        assigneeRef.Id, new ColumnSet(true)).ToEntity<Team>();

                    //Put your logic here based on the retrieved Team informations

                }

            }

        }

    }

    catch (Exception e)

    {

        throw new InvalidPluginExecutionException("An error occured for 
                Assign plugin " + e.Message + e.InnerException);

    }

}

Hope it can be useful.

Happy CRM coding.

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