Sort automatically upon changes in itemsource

[Lim]

Hi,

I have a radgridview which I have configured to sort using "telerik.RadGridView.SortDescriptors" based on whether a checkbox is tick or untick. However, upon ticking/unticking the checkbox, the radgridview does not sort based on the condition that I have specified. May I ask for the solution for this?

[Martin Ivanov]

Hello Lim,

If by changes in the ItemsSource you mean a property change in the row's data item, then this is not supported. There is a feature request for this. You can get the desired behavior by manually calling the Reset method of the SortDescriptors collection of RadGridView after the data item's property gets changed. For example:

dataItem.MyProperty = newValue;
this.gridView.SortDescriptors.Reset();

Regards,
Martin Ivanov
Progress Telerik

[Lim]

Hi Martin, I am using MVVM. In that case, would it be possible to call the reset() in ViewModel instead of codebehind?

[Martin Ivanov]

There is no strictly MVVM mechanism for this. If you want to call this code in your view model, you can pass the SortDescriptors collection to the view model.

var viewModel = new MyViewModel() { SortDescriptors = this.gridView.SortDescriptors };

 

// in the MyViewModel class
OnMyItemPropertyChanged()
{
     this.SortDescriptors.Reset();
}