Element Id Property |
A unique identifier for an Element in an Autodesk Revit project.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 27.0.4.0 (27.0.4.0)
Syntax
Remarks
Returns an object containing the project-wide unique identifier for this Element. The identifier with this id is only unique for the project, it is not unique across separate Autodesk Revit projects.
Example
C#
private void CheckElementId(Autodesk.Revit.DB.Document document, Autodesk.Revit.DB.Element element)
{
// Get the id of the element
Autodesk.Revit.DB.ElementId selectedId = element.Id;
long idValue = selectedId.Value;
// create a new id and set the value
Autodesk.Revit.DB.ElementId id = new Autodesk.Revit.DB.ElementId(idValue);
// Get the element
Autodesk.Revit.DB.Element first = document.GetElement(id);
// And get the element using the original Id (they should be the same)
Autodesk.Revit.DB.Element second = document.GetElement(selectedId);
String prompt = "Get an element twice. They should be the same element.";
// Use the Equal method to check two elements. It is not a good way.
bool isSame = first.Equals(second);
prompt += "\nUsing Equal method on elements, the result is: " + isSame;
isSame = first.Id.Equals(second.Id);
prompt += "\nUsing Equal method on element's Id properties, the result is: " + isSame;
TaskDialog.Show("Revit",prompt);
}