ObservableCollection binding

Question

hi,

my itemsSource is ObserableCollection<T>.

whenever i refresh this collection from linq query
(which means it's new collection)
i lost the binding, and should programtically do "treeVIew.ItemsSource = MyObservableCollection;

Why?
is there any way to solve it?

And another one, Please:
can i bind the collection to Insert, UPdate,Delete methods, in order to automatically update the new entries on the db?

thanks!!

Answer 1

Hi Asaf_abypt,

is your MyObservableCollection property raising the PropertyChanged event? If not the ItemsSource is not aware of the new collection.

Hope this helps.

Answer 2

Hi,

 

-->is there any way to solve it?

Guenter Schwaiger has provided a good hint in this case.here is an akin post for your reference:
http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/3ae79910-a5d6-4017-b840-800e3e0b880b

 

-->And another one, Please:can i bind the collection to Insert, UPdate,Delete methods, in order to automatically update the new entries on the db?

You can use data binding with LINQ to SQL to achieve this, please have a look at this:

http://dotnetslackers.com/articles/wpf/WPFDataBindingWithLINQ.aspx

 

Hope this helps.

Thanks

---

Jim Zhou -MSFT