Conversion of String to Integer in C#

       


class ConvertIt
 {
   static void Main()
    {

        string stringToNumber = "1000";
        int numberParse = 0;
        int numberConvertTo = 0;
        int numberTryParse = 0;
        bool isTryParse = false;

        // Using .Parse() will result in throwing ArgumentNullException in case of string being null.
        numberParse     = int.Parse(stringToNumber); 
        
        // Using Convert.ToInt32() will result in 0 in the case of string being null.
        numberConvertTo = System.Convert.ToInt32(stringToNumber);

        // Better than .Parse() as we get to know whether the string got converted or not Without throwing ArgumentNullException
        isTryParse      = int.TryParse(stringToNumber, out numberTryParse);

        if(isTryParse == true)
           {

             System.Console.WriteLine("Conversion to integer successful");

           }
      
        else
           {
             System.Console.WriteLine("Conversion to integer failed");

           }
         
         System.Console.WriteLine("numberParse: "+numberParse);
         System.Console.WriteLine("numberConvertTo: "+numberConvertTo);
         System.Console.WriteLine("numberTryParse: "+numberTryParse);
    }

 }