How to use Asynchronous completed result in silverlight

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I'm using asynchronous calls,I wanna use Asynchronous completed result.If its true i will move if its not I won't need to execute the code

C#

protected void btnInitiate_Click(object sender, System.Windows.RoutedEventArgs e)
     {
       

if (txtNewMaterialCode.Text != string.Empty)
              {

                  ObservableCollection<Paramaters> parm = new ObservableCollection<Paramaters>();
                  parm.Add(ReturnParameters("@OPERATION", "1"));
                  parm.Add(ReturnParameters("@PDV_MATERIAL_CODE", txtNewMaterialCode.Text.Trim()));
                  var Proxy = WCF.GetService();
                  Proxy.GetDataSetProcCompleted += new EventHandler<GetDataSetProcCompletedEventArgs>(CheckmaterialCode);
                  Proxy.GetDataSetProcAsync("USP_PRODUCT_MASTER", parm.ToArray(), "userState");

              }

//This is the code which depends on my asynchronous call result.If its true i will execute this otherwise I skip this code to execute.

XML

stpnlControls.Visibility = Visibility.Collapsed;
stpnlConformation.Visibility =
txbProductInformation.Visibility = Visibility.Visible;

But what exactly happening here is,it first executes all the code here and after it moves to asynchronous call.So I dn't wanna that to happen based on result I need a choice to execute further or skip to execute.

Posted 7-Jul-14 20:22pm

Usha Sanjee

Updated 24-Jul-14 2:22am

Christian Amado

v2

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PallaviKonduri · Accepted Answer · 2014-07-24T01:05:00

Add the following code :

C#

void CheckmaterialCode (object sender,GetDataSetProcCompletedEventArgs e )
{

    if(e.Error == null)
    {
      if(e.Result)
        {
          stpnlControls.Visibility = Visibility.Collapsed;
          stpnlConformation.Visibility =
          txbProductInformation.Visibility = Visibility.Visible
        }
    }
}