Delete Line pattern in revit

Dear all,
Are there any way to delete the line pattern in once for revit?

You should be able to delete it this way you have shown… what’s the error you are getting ?

Try the Purge component instead

Thank you.=))

Also one more question:
What kind of document will use “purge element”, any others?I less use this component.

Purge is only available on the active document (no Zui +doc)