Updating an Activity in MS CRM via web service?

Question

I've been trying to do this all morning. Anyone have a code snippet (C#) showing how to update an "activity" within CRM via the webservice? I can CreateReadUpdateDelete with entities, but I'm not sure how to do it with Activities.

Can't find anything on google either...

Answer 1

What are you specifically looking to update? Basically, updating an activity is just like updating any other entity, you just have to use the task entity.

public void CloseTask(CrmService crmsvc, Guid activityid, DateTime start, DateTime end)
{
    ColumnSet cols = new ColumnSet();
    cols.Attributes = new string[] { "activityid", "statecode" };

    task tsk = (task)crmsvc.Retrieve(EntityName.task.ToString(), activityid, cols);
    if(tsk.statecode.Value != TaskState.Open)
         return;

    tsk.actualstart = new CRMDateTime();
    tsk.actualstart.value = start.ToString();
    tsk.actualend =  new CRMDateTime();
    tsk.actualend.value = end.ToString();


    crmsvc.Update(tsk);

    SetStateTaskRequest state = new SetStateTaskRequest();
    state.EntityId = activityid;
    state.TaskState = TaskState.Completed;
    state.TaskStatus = -1; // Let MS CRM decide this property;
    SetStateTaskResponse stateSet = (SetStateTaskResponse)crmsvc.Execute(state);

}

Edit: added some sample code. note, I had to modify what I had to strip some proprietary code, so I don't know if this will actually compile. It's close though.