13-Nov-2015 11:42

Wpf itemssource binding not updating

It does seem more intuitive to take this approach however Data Grid Columns are not actually part of the visual tree and only the Binding DPs will actually be set on generated cell elements to inherit Data Grid’s Data Context.This works because internally when the cell is being generated, the Content of the cell will have its layout updated which will make it part of the visual tree and it will have access to the correct Data Context.

If you choose to participate, the online survey will be presented to you when you leave the Msdn Web site. Thanks, it's the Is Editable issue that is causing the problem for us - I wasn't aware of that specific behaviour.My example data item doesn't implement INotify Property Changed, but our actual data items do, so they update correctly. This property may be used to add items to an Items Control.A common scenario is to use an Items Control such as a List Box, List View, or Tree View to display a data collection, or to bind an Items Control to a collection object.I have an updating issue with Binding in my Combo Box.

I have created a simplified example illustrate this problem. So in the image above, I have a Text Block (in black) that shows the 'Selected Person. The First Name and Last Name properties of the Selected Person are shown in the 2 Text Boxes below the Full Name.

The Combo Box Display Member Path is bound to 'Full Name' and the combobox contains a list of Person objects.

The 'Full Name' property should be the same in the Text Block, Combo Box, and Combo Box dropdown list.

However, it is ONLY updating correctly in the Text Block.

The combo Box Dropdown just updates the first time it is opened and doesn't update after that.

So if I edit the First Name in the textbox and click the dropdown and then edit it some more and click the dropdown again, we end up with 3 different 'Full Name' values being displayed for the Selected Person.

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