WPF Data Grid - Change Background Color for Modified Cells

This example demonstrates how to highlight grid cells that were edited by a user.

This approach does not highlight cells if you change their values at the data source level. In this case, you can use the DataUpdateFormatCondition instead.

Implementation Details

This example creates invisible unbound columns for each grid column. These Boolean unbound columns contain information on whether the corresponding grid column's cell was modified by a user. The CustomUnboundColumnData event populates unbound columns with data. The specified format condition highlights cells based on data in unbound columns.

Files to Review

• HighlightChangedCellBehavior.cs (VB: HighlightChangedCellBehavior.vb)
• ViewModel.cs (VB: ViewModel.vb)
• Window1.xaml (VB: Window1.xaml)

Documentation

• Behaviors
• Conditional Formatting
• Unbound Columns
• Format Changing Values

More Examples

• WPF MVVM Behaviors - Create a Custom Attached Behavior
• WPF Data Grid - Apply Conditional Formatting in Code Behind
• WPF Data Grid - Create Unbound Columns

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