How to check if a String is Integer in C#?  (Part 2)

In addition to the methods given yesterday by Bala Murugan, I believe this method will work best:

string number = "100";

if (number.All(Char.IsDigit))

{

Console.Write("{0} is a valid number!", number);

}

else

{

Console.Write("{0} is not a valid number!", number);

 }