Returns the name of the key associated with the value passed by reference.
Assembly: System.Web.Services (in System.Web.Services.dll)
The default implementation of this method is intended to be overridden by a derived class in order to return the name of the key associated with the value parameter. The default implementation returns null (Nothing in Visual Basic). This protected method is accessible only through this class or a derived class.
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.