This example demonstrates how to use custom summaries to count the total number of empty cells in the specified grid column.

If you want to maintain a clean MVVM pattern and specify custom summaries in a ViewModel, create a command and bind it to the GridControl.CustomSummaryCommand property.

• MainWindow.xaml (MainWindow.xaml)
• MainWindow.xaml.cs (MainWindow.xaml.vb)

• MainWindow.xaml (MainWindow.xaml)
• MainViewModel.cs (MainViewModel.vb)

• Data Summaries
• Custom Summary
• GridControl.CustomSummary
• GridControl.CustomSummaryCommand

• How to Display Group Summaries
• How to Display Total Summaries
• How to Calculate Custom Node Summaries
• How to Bind the WPF GridControl to Total and Group Summaries Specified in ViewModel
• How to sort group rows by summary values