I want to count , how many features used in part.
suppose, i have an assembly of 5 parts, and count dia. 10 holes within assembly.
Can any one knows how its possible,
thanks in advance.
Counting features in a part:
Tools - Evaluate - Performance Evaluation.
See attached image for an example of feature count. This part has 362 features:

I'm not sure what you mean about counting holes in an assembly. But, this tool will also count the number of parts in an assembly.
The extended search might be able to count specific hole sizes. Not sure if it works in an assy but pretty sure that will work on parts.
beautiful reply