'Declaration Public Property GroupHeaderConverter As IValueConverter
public IValueConverter GroupHeaderConverter {get; set;}
'Declaration Public Property GroupHeaderConverter As IValueConverter
public IValueConverter GroupHeaderConverter {get; set;}
By default, the grid creates group headers that show the name of the property being grouped on, the value of the property, and the number of items in the group.
You can modify or customize this information by defining your own group header converter class and assigning an instance of this class to the grid's GroupHeaderConverter property.
class GroupHeaderConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { var gr = parameter as GroupRow; var group = gr.Group; if (group != null && gr != null && targetType == typeof(string)) { var desc = gr.Grid.CollectionView.GroupDescriptions[gr.Level] as PropertyGroupDescription; return desc != null ? string.Format("{0}: {1} ({2:n0} item{3})", desc.PropertyName, group.Name, group.ItemCount, group.ItemCount == 1 ? string.Empty : "s") : string.Format("{0} ({1:n0} items)", group.Name, group.ItemCount); } // default return value; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return value; } }