gtk-sharp2-examples software package provides sample applications for the GTK# 2.10 toolkit, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gtk-sharp2-examples
gtk-sharp2-examples is installed in your system.
Make ensure the gtk-sharp2-examples package were installed using the commands given below,
$ sudo dpkg-query -l | grep gtk-sharp2-examples *
You will get with gtk-sharp2-examples package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Mono/CLI |
| Package | gtk-sharp2-examples |
| Version | 2.12.10-6 |
| Description | sample applications for the GTK# 2.10 toolkit |
| Sub Section | Cli-mono |