For console application you can do this, the do while
loop runs untill you press x
public class Program
{
public static void Main()
{
ConsoleKeyInfo keyinfo;
do
{
keyinfo = Console.ReadKey();
Console.WriteLine(keyinfo.Key + " was pressed");
}
while (keyinfo.Key != ConsoleKey.X);
}
}
This will only work if your console application has focus. If you want to gather system wide key press events you can use windows hooks