I am working at revit api to get walls of special room this is the part i have completed with Projecting rays technique. This is the main point that i am unable to do Wall thickness. Is there any way i can extract wall thickness. i am using revit 2020. Thank you
Sure, very easy.
Use the WallType
Width
property.
You could very easily have answered this question by yourself, either by searching the Internet or by exploring the wall and its properties using RevitLookup.
Please perform some minimal research for yourself before asking a question and making others do the work for you.
Here is some more advice on researching how to solve a Revit API programming task.