[Solved] When trying to use the new row I get Binding Errors when using the Office2019 theme and the new row is a visually empty

[Patrick]

When trying to use the new row with the Office2019 theme, I get binding errors and the new row is visually an empty row. Using Office2013 works as expected. The errors shown are:

• System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.GridView.GridViewDataControl', AncestorLevel='1''. BindingExpression:Path=GridViewNewRowContent; DataItem=null; target element is 'ContentPresenter' (Name=''); target property is 'Content' (type 'Object')
• System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Telerik.Windows.Controls.GridView.GridViewDataControl', AncestorLevel='1''. BindingExpression:Path=GridViewNewRowContentTemplate; DataItem=null; target element is 'ContentPresenter' (Name=''); target property is 'ContentTemplate' (type 'DataTemplate')

I am using version 2025.1.211. Disabling row virtualization makes it work with the Office2019 theme. What do I need to do to get it to work with the Office2019 theme and virtualization?

[Nadya | Tech Support Engineer]

Hi Patrick,

I'm not sure why you're encountering this error when applying the Office2019 theme. I created a sample project with RadGridView and tested both the Office2013 and Office2019 themes. In both cases, the new row is displayed correctly, and I don't see the error on my side. Please see the results below:

Office2019 theme:

You can find my test project. Can you run it and compare how it differs from your setup? Is it possible to recreate your setup in the test project and get it back to me for further investigation?

Regards,
Nadya | Tech Support Engineer
Progress Telerik