# Viewing boundary patch in CGNS files

**URL:** https://discourse.paraview.org/t/viewing-boundary-patch-in-cgns-files/7732
**Category:** ParaView Support
**Created:** [July 30, 2021, 8:48pm UTC](https://discourse.paraview.org/t/viewing-boundary-patch-in-cgns-files/7732 "2021-07-30T20:48:33Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![503075765](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/5/5f9b8f/32.png) [@503075765](https://discourse.paraview.org/u/503075765)
#### Post date: [July 30, 2021, 8:48pm UTC](https://discourse.paraview.org/t/viewing-boundary-patch-in-cgns-files/7732/1 "2021-07-30T20:48:33Z")

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Hello,

I have a CGNS file divided into 200 zones. Some of these zones have additional boundary patches, including possibly an “AIRFOIL” boundary patch. I only want to display the airfoil.

In Ensight, this is easy. I load my file, I hide all parts, then search AIRFOIL parts only, select, and show.

In Paraview, I load up my file, and look at properties. “Hierarchy”, “Grids”, and “Patches” _only_ have the 200 zones listed. The Multiblock Inspector lets me see which zones have patches, but not what those patches are (nor do I see a convenient search+hide or search+show feature, and it looks as if I can only show or hide entire zones regardless of whether the “Patches” checkbox for that zone is selected).

Any idea how I can find my AIRFOIL patches?

Thanks!