Gets or sets a composite string that specifies how to format the header if it is displayed as a string.
Assembly: PresentationFramework (in PresentationFramework.dll)
The following example creates a ListBox that groups a collection of items by price range. The converter, GroupByPrice, returns an integer value that is above each item's price. For example, if an item's price is between 0 and 100, the converter returns 100. The example uses the to create a string that includes the upper limit for each price range. For example, in the United States, items that are under 100 dollars are grouped under a heading that says "Items under $100".
The following example shows the GroupByPrice class, the PurchaseItem class, and the collection that the ListBox is bound to.
Available since 3.0