Use TryParse from int : int parse « Data Type « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Data Type
3. int parse

using System;
using System.Collections.Generic;
using System.Text;

class Program
{
 static void Main(string[] args)
 {
      Console.WriteLine("Please enter an integer and press Enter");
      int numberEntered;
      while(!int.TryParse(Console.ReadLine(), out numberEntered)){
           Console.WriteLine("Please try again");
      }
      Console.WriteLine("You entered " + numberEntered.ToString());
 }
}

Please enter an integer and press Enter
12
You entered 12