Hello Oliver,

Thank you for your post!

Fields in the XamDataGrid have a method named PerformAutoSize, which will resize the field to the largest cell value. By creating an implicit Style for LabelPresenter, you can apply a ContextMenu to the header of each XamDataGrid field, as the LabelPresenter represents the header of a field. Then, by using a command on a "Resize" menu item in your context menu and passing in the menu item itself to the command as a parameter, you can create the functionality to resize the field. MenuItem.Parent will give you the ContextMenu, and in this case, ContextMenu.PlacementTarget will give you the LabelPresenter. The LabelPresenter has a Field property associated with it which will return the field it is the header of, so by using LabelPresenter.Field.PerformAutoSize(), you can resize a XamDataGrid field via a context menu.

I have attached the sample project to demonstrate the above.

Please let me know if you have any other questions or concerns on this matter.

Sincerely,
Andrew
Associate Developer
Infragistics Inc.
www.infragistics.com/support