How to modify element name

[846081597]

I want to create a plugin primarily for modifying the names of elements in the current project file（contains walls, slabs, and family instances, etc）
The code is as follows

Document doc = m_revit.ActiveUIDocument.Document;

FilteredElementCollector collector = new FilteredElementCollector(doc);
collector.WhereElementIsNotElementType(); 

Transaction ts = new Transaction(doc, "update");
ts.Start();

int num=0;
foreach (Element elem in collector)
{

   num++;

   if (elem != null)
     {

         string newname=elem.Name+num.ToString();

         elem.Name = newname;

     }

}

ts.Commit();

But it reports an error：

This element does not support assignment of a user-specified name.

Please help me.

[Mohamed_Arshad · Accepted solution]

Hi @846081597 

You need to consider several edge cases when renaming an element. For example, if you are renaming a wall, you can only rename the WallType name. To rename the WallType, you cannot directly rename the element. Instead, you need to first access the WallType and then rename it. Therefore, please check the element carefully before renaming it. Kindly refer to the code and image below for additional reference for wall.

Code Snippet

 using (Transaction setName= new Transaction(doc,"Set Name"))
 {
     setName.Start();

    WallType wallType= doc.GetElement( wall.GetTypeId()) as WallType;

     wallType.Name = "New Name";

     setName.Commit();
 }

Image Reference

Hope this will Helps 🙂

[846081597]

Thank you very much, you are a genius！！
My problem has been solved.
Thank you.