Gets the number of selected items in the ListBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Use the property to determine the number of selected items in the ListBox.IntegerCollection. You can then use this value when you are looping through the items and you need to provide a number of iterations to perform the loop.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.