Hi Kris,

Thank you for your reply. I am glad that you have managed to resolve your issue.

Actually I just figured it out.

In order to use Brushes.AliceBlue you need 

using System.Windows.Media;

but I had

using Brushes = System.Drawing.Brushes;

when I commented using Brushes = System.Drawing.Brushes; out and just used using System.Windows.Media; it worked.

Well I'm not sure what to say. I can't reproduce the exception in your test project even when I setup the layout exactly like my project. 

Hi,

Thank you for your reply. I was looking into your new issue and I was not able to reproduce any exception on my side using the provided code snippet.

I am attaching a sample application(DataGridFieldBrush.zip) that I used for my test.

Could you please try to reproduce your issue with my sample application?

Looking forward to hearing from you.

Thanks for pointing me in the right way. I decided to use OnFieldLayoutInitialized instead of OnFieldLayoutInitializing. I also have another question. I would like to set the background cell color for certain columns with the below code:

var cellValuePresenterStyle = new Style(typeof(CellValuePresenter));
var backgroundSetter = new Setter(BackgroundProperty, Brushes.AliceBlue);
cellValuePresenterStyle.Setters.Add(backgroundSetter);

someField.Settings.CellValuePresenterStyle = cellValuePresenterStyle

but I'm getting the following exception:

System.Drawing.SolidBrush' is not a valid value for the 'System.Windows.Controls.Panel.Background' property on a Setter.

Any idea why?