P

ExternalDefinitionCreationOptions.Description

Description:
The description of the parameter definition to be created. The description will be used as tooltip in the Revit UI including in the properties palette. The default is an empty string.

public string Description { get; set; }

Public Property Description As String
	Get
	Set

public:
property String^ Description {
	String^ get ();
	void set (String^ value);
}

member Description : string with get, set

ArgumentNullException

When setting this property: A non-optional argument was null