Set IsBusy while grouping

[Roman]

Hi,

My rad gridview becomes unresponsible for a couple of seconds while grouping certain amount of data. All I want to do is to show some kind of loading indicator for this period of time. I tried to leverage OnGrouping, OnGrouped events to set IsBusy but it does not work:

OnGrouping(){  gridView.IsBusy = true;}
OnGrouped(){  gridView.IsBusy = false;}

It looks like GridView performs all grouping in UI thread without any chance for 'IsBusy = true' being proceed before grouping finishes. 

Is this any recommended way to achieve this? I can't believe nobody meets this issue but forum search was unsuccessful :(  

Thanks in advance

[Dimitrina]

Hello,

Both the BusyIndicator and the Grouping/ Grouped events use the same UI thread, which results in blocking the UI rather than showing the busy indicator while the grouping is applied.

If you wish to display an indicator while loading the data from the server, then you can configure the IsBusy property of the GridView appropriately. Basically you should bind this property, so that the indicator is shown while the data has been loading. You can check the DataServiceDataSource WPF Demos as an example.

Regards,
Didie
Telerik

 

 

[Roman]

Ok, I see that if i bind DataServiceDataSource.IsBusy with grid.IsBusy it should work. But as far as I understand this DataServiceDataSource is intended for client-side purposes, for example to consume WCF services. How can i configure this data source to use my Entity Framework db context directly? Could you provide an example?

[Dimitrina]

Hello,

You can check our  WPF Demos on the EntityFrameworkDataSource. Still, the load of the EntityFrameworkDataSource is synchronous and it does not have an IsBusy property. 

Regards,
Didie
Telerik