'Declaration
 
Public Delegate Sub GroupExpansionChangedEventHandler( _
   ByVal sender As Object, _
   ByVal e As GroupExpansionChangedEventArgs _
) 

'Usage
 
Dim instance As New GroupExpansionChangedEventHandler(AddressOf HandlerMethod)

public delegate void GroupExpansionChangedEventHandler( 
   object sender,
   GroupExpansionChangedEventArgs e
)

Parameters

sender

e

.NET: net5.0, net5.0-windows, net6.0, net6.0-macos, net6.0-windows, net7.0, net7.0-macos, net7.0-windows, net8.0, net8.0-browser, net8.0-macos, net8.0-windows, net9.0, net9.0-browser, net9.0-macos, net9.0-windows, net10.0, net10.0-browser, net10.0-macos, net10.0-windows.

.NET Framework: net40, net403, net45, net451, net452, net46, net461, net462, net463, net47, net471, net472, net48, net481.

Reference

GroupExpansionChangedEventHandler Members
Xceed.Wpf.DataGrid Namespace