Realtime sorting in RadDataGrid. Current status?

[Bob]

I've read this thread but it is a bit confusing and old: Live sorting/grouping in UI for WPF | Telerik Forums

What is the current situation?

I am having problems with Devexpress GridControl as they dont support what they call "Live Data Shaping" eg sorting with real-time updates IF you use WPF binding.

Question - can Telerik data grid and/or virtual grid do live data shaping where columns use custom templates with WPF binding to a dictionary. For example: `{Binding Fields[abc].Value}`?

[Martin Ivanov]

Hello Bob,

The sorting/grouping/filtering data operations of RadGridView are applied over the property bound to the DataMemberBinding of the column and they work automatically on PropertyChanged. If you have other properties bound in the cell template, these won't be automatically taken into account during the data operations. You will need to update the value of the property bound to the DataMemberBinding.

If you need to use different properties for the different data operations, you can re-target the bound property, using the FilterMemberPath, SortMemberPath and GroupMemberPath properties of the column.

As an alternative approach you can implement custom filtering or custom sorting, but still you will need to manually re-bind the RadGridView whenever you change the values bound in the cell template.

Regards,
Martin Ivanov
Progress Telerik

[Bob]

the real question - does DataMemberBinding support indexed paths and would it work for automatic sorting (without custom template)?

{Binding Fields[abc].Value}

 

[Martin Ivanov]

Yes, as long as the WPF data binding system supports it and the corresponding property raises the PropertyChanged event. The shown path is supported. However, if the Value property doesn't raise PropertyChanged the automatic sorting won't work. The PropertyChanged event comes from the INotifyPropertyChanged interface which is required in the WPF world in order to notify the UI for changes in the data model. If the Value property doesn't raise PropertyChanged the RadGridView control won't know that the corresponding value has changed.

[Bob]

ok understood thank you! (sure Value raises even - or else the new value wont be visible in the UI anyway. sorting or no sorting :))