public bool ContainsKey( 
   string key
)

'Declaration
 
Public Overloads Function ContainsKey( _
   ByVal key As String _
) As Boolean

Parameters

key

The unique key of the ApplicationUser of interest.

Return Value

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

ApplicationUserCollection Class
ApplicationUserCollection Members
Overload List