A value representing the default value of the FormatProvider property. Unless overridden, a null reference (Nothing in Visual Basic).
Remarks
When overriding DefaultFormatProvider in a derived class, IsFormatProviderAmbient should also be overridden to return false.
The value returned by your implementation of DefaultFormatProvider should not be dynamic.
Requirements
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