The exception that is thrown when a null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

Namespace: Autodesk.Revit.Exceptions
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)

Syntax

C#
`[SerializableAttribute] public class ArgumentNullException : ArgumentException`

Visual Basic
`<SerializableAttribute> _ Public Class ArgumentNullException _ Inherits ArgumentException`

Visual C++
`[SerializableAttribute] public ref class ArgumentNullException : public ArgumentException`

Inheritance Hierarchy

SystemObject
  SystemException
    Autodesk.Revit.ExceptionsApplicationException
      Autodesk.Revit.ExceptionsArgumentException
        Autodesk.Revit.ExceptionsArgumentNullException