Telerik grid didn't show new data until refresh wpf

[Avi Avni]

when i add or deleted data from the grid the grid not refresh
until i go to other place like tab or page
can somebody no this problem ?.
best regard

[Yavor Georgiev]

Hi Ehud Pinchas,

 Could you please describe your problem in a bit more detail? Do you change the data from code-behind?

Regards,
Yavor Georgiev
the Telerik team

[Avi Avni]

Hi Yavor,

Thanks for your help

I'm using tab control with tab item template the grid is part of this template

I have two buttons one for adding rows and one for delete rows

When I add or remove (in the code behind) the collection is changed

 But only after I clicking on some other page in the pager or on other tab the grid update

And  the user dont know what happend

Best regards

Ehud

[Yavor Georgiev]

Hi Ehud Pinchas,

 What kind is your item collection? Is it an ObservableCollection?

All the best,
Yavor Georgiev
the Telerik team

[Avi Avni]

Hi Yavor ,

I don’t know what kind of collection I get

In the remove method I go to the RadGrid.Items.RemoveAt(index);

And in the add method I do this

((IList)RadGrid.ItemsSource).Insert(index, item);

 Its work fine usually but in the tab item template the grid not refresh

Like I say before

Best regards

Ehud

[Yavor Georgiev]

Hello Ehud Pinchas,

 The RadGridView can only detect a change in the backing collection if it implements INotifyCollectionChanged. If it doesn't, you should refresh the grid by calling Rebind() on it .

Kind regards,
Yavor Georgiev
the Telerik team

[Avi Avni]

it work thanks
best regards
Ehud

[meir]

Hi, I'm having the same problem, all my collections are Observable Collections, and I still experience this problem, I update the collection in the code, and it doesn't update the Window until I click on the column header or restart the program...

[meir]

I'm sorry, let me add more information, I already tried using items.Refresh() and Rebind(), both of them gave me an exception without any messages, was just saying that I'm in break mode and code was  in some external .

 

[Stefan]

Hello Meir,

Thanks for the additional clarification.

Such behavior can be reproduced when the data is not edited from the user interface of the control, but programmatically. With such setup, you need to manually notify RadGridView for the modified data. The approach of achieving this is discussed in the Edit an item outside RadGridView help article. Can you please check it out and let me know how it goes?

Best Regards,
Stefan
Progress Telerik