Leopard Supportperson
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Leopard Supportperson
asked on 15 Nov 2007, 01:06 AM
Hi,
I bind a List<T> to the grid and get the items displayed properly. When I want to add a new item into the list of items, I do that from the code - so, a user presses 'Add' button, and in the code I actually add an instance of type T into the list. However, the grid does not get updated with that new row. This is the code I use to bind:
List<T> myList = whatever;
GridInstance.DataSource = myList;
When I add a new item:
myList.Add(new T());
If I check GridInstance.DataSource right after I add an instance into the list, then I can see that the DataSource refers to the updated list, but the UI stays the same...
What should I do to update the UI in this case? Thanks!
I bind a List<T> to the grid and get the items displayed properly. When I want to add a new item into the list of items, I do that from the code - so, a user presses 'Add' button, and in the code I actually add an instance of type T into the list. However, the grid does not get updated with that new row. This is the code I use to bind:
List<T> myList = whatever;
GridInstance.DataSource = myList;
When I add a new item:
myList.Add(new T());
If I check GridInstance.DataSource right after I add an instance into the list, then I can see that the DataSource refers to the updated list, but the UI stays the same...
What should I do to update the UI in this case? Thanks!
1 Answer, 1 is accepted
0
Hello Leopard Supportperson,
Thank you for writing us.
If you use a DataSet or a DataTable, RadGridView will automatically update itself if you make changes directly to the data source (adding, removing or changing data).
However If you use custom business objects, such as List<T>, you must implement the IBindingList and the INotifyPropertyChanged interfaces in order to notify the grid about any changes in your data source. A simple way to do this is to use BindingList<T> instead of List<T>.
Don't hesitate to contact us if you have other questions.
Greetings,
Jack
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center
Thank you for writing us.
If you use a DataSet or a DataTable, RadGridView will automatically update itself if you make changes directly to the data source (adding, removing or changing data).
However If you use custom business objects, such as List<T>, you must implement the IBindingList and the INotifyPropertyChanged interfaces in order to notify the grid about any changes in your data source. A simple way to do this is to use BindingList<T> instead of List<T>.
Don't hesitate to contact us if you have other questions.
Greetings,
Jack
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center