Checking Console.ReadLine()!=null

Question

I am making a CMD for my application, and figure I have a trouble when I check `Console.ReadLine != null``

string input = Console.ReadLine();
 if(input != nu         


        

Answer 1

When you hit ENTER, Console.ReadLine returns empty string. It doesn't return null. Use string.IsNullOrEmpty to check instead.

if(!string.IsNullOrEmpty(input))

According to documentation it will return null only if you press CTRL + Z.