Silverlight 4 + RIA Service Loads

Silverlight 4 + RIA Service Loads

Is it an acceptable practice to use the same Load Operation to load multiple entities and then binding it to a single event handler asychronously? I'm doing this because I am using a busy indicator and we don't really know which entity gets returned quicker.

Or should I separate the loads into multiple Load Operation / EventHandler pairs?

  LoadOperation GetResult;      private void LoadinDatagrid()     {            IsBusy = true;         GetResult = DomainContext.Current.Load(GetSomething1Query());         GetResult = DomainContext.Current.Load(GetSomething2Query());         GetResult = DomainContext.Current.Load(GetSomething3Query());                   GetResult.Completed += new EventHandler(GetResult_Completed);                          }      void GetResult_Completed(object sender, EventArgs e)     {          GetSomething1 = DomainContext.Current.Something1;         GetSomething2 = DomainContext.Current.Something2;         GetSomething3 = DomainContext.Current.Something3;         GetResult.Completed -= new EventHandler(GetResult_Completed);         IsBusy = false;          } 

Answers & Comments...

Answer: 1

LoadOperation GetResult;

private void LoadinDatagrid() {        IsBusy = true;      GetResult.Completed += new EventHandler(GetResult_Completed);            GetResult = DomainContext.Current.Load(GetSomething1Query());     GetResult = DomainContext.Current.Load(GetSomething2Query());     GetResult = DomainContext.Current.Load(GetSomething3Query());           }  void GetResult_Completed(object sender, EventArgs e) {    if(e.result!=null){     if(e.result.x=="GetSomething1")     GetSomething1 = DomainContext.Current.Something1;     else if(e.result.x=="GetSomething2")     GetSomething2 = DomainContext.Current.Something2;     else if(e.result.x=="GetSomething3")     GetSomething3 = DomainContext.Current.Something3;     //     //Because when returned 1st data then stop eventhandler.     //GetResult.Completed -= new EventHandler(GetResult_Completed);     //    }     IsBusy = false;      } 

by : Ozan Cakırhttp://stackoverflow.com/users/1763013

Answer: 2

Try the following:

private int loadCounter;  private void LoadinDatagrid() {        loadCounter = 3;     IsBusy = true;     GetResult = DomainContext.Current.Load(GetSomething1Query(), LoadCompleted);     GetResult = DomainContext.Current.Load(GetSomething2Query(), LoadCompleted);     GetResult = DomainContext.Current.Load(GetSomething3Query(), LoadCompleted);          }  private void LoadCompleted(LoadOperation result) {     Interlocked.Decrement(loadCounter); // Thread save decrementing     if(loadCounter == 0) // All queries have been loaded     {         IsBusy = false;     } } 

by : Spontifixushttp://stackoverflow.com/users/1521227

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