I am trying to send an ssh command with C# but I'm getting an error for the SshClient. What namespace reference do I need so that it is accepted? Do I need to install Openssh on the Microsoft server?

I'm open to other suggestions if you have a better way to send a command. It's a very simple script:

using (var client = new SshClient("IP", "username", "password"))
{
client.Connect();
client.RunCommand("the command I'd like to run");
client.Disconnect();
}