Gets the argument value that causes this exception.
Assembly: mscorlib (in mscorlib.dll)
Use this property to retrieve the invalid argument.
The ActualValue property returns the same value that was passed to the constructor, or null if no value was supplied.
The property is assigned a value at the time of object construction. If the property value is not null, a string representation of the value is appended to the message string held by the Message property.
The property is not used within the .NET Framework class library. It carries a null value in all the ArgumentOutOfRangeException objects thrown by the .NET Framework class library. The property is provided so that applications can use the available argument value.
This property is read-only and should be overridden only to customize the content or format of the value.