To surround a symbol with #region
  1. In the File Structure window, select a single type member, or select several members by Ctrl+clicking them.
  2. On the toolbar of the window, click Surround with Region
    Image 1: .
  3. Specify a custom name for the new region right in the File Structure window:

    Image 2:
To remove #region from the code
  • Click the X button in the upper-right corner of the region frame.
  • Right-click the region name, and choose Delete in the context menu.