DataGrid Not quite work as expected

Hi There,

We downloaded the Jan 31, 2013 Nightly build.

We found a big problem on datagrid, on the attached testing project:

1. Compile and Run the project
2. Click on button "Grid Messed Up"
3. Click on insert button a few times
4. select a record and click on one cell for 2nd column, so the comboBox on the cell appears
5. click on 2nd item on the tree view and click on the First Item on the treeview again, at this moment the cell value previous focused disappeared. Move the mouse on the same record but for different cells, the value also disappeared.
6. Click on other records, the previous disappeared record cannot recover, but we do know that the item behind UI is still valid.

It does not only happens for programmatically added combobox colums (where we don’t use column.DisplayMemberBinding = new Binding(...) to add the column), but any other type of programmatically added column (i.e. NumericTextBox, DoubleTextBox) behaves the same.

We don't know in which build this bug has been introduced but as we are nearing the release of our product we need to have this issue fixed as soon as possible. Or tell us how to fix the problem.

Thanks a lot.

Gordon

Hello Gordon

Thanks for pointing out this bizarre issue and posting a repro project. This will be resolved in the next nightly build.

Jason Fauchelle