Initialize a new instance of the NotNullExpression class for a named
            Property that should be null.
            
Namespace: NHibernate.CriterionAssembly: NHibernate (in NHibernate.dll) Version: 3.2.0.4000 (3.2.0.4000)
Syntax
| C# | 
|---|
public NullExpression( string propertyName )  | 
| Visual Basic | 
|---|
Public Sub New ( _ propertyName As String _ )  | 
| Visual C++ | 
|---|
public: NullExpression( String^ propertyName )  | 
Parameters
- propertyName
 - Type: System..::..String
The name of the Property in the class.