Convert string to char in CSharp

/* ww  w . ja v a  2  s  .  com*/
using System;

public class Program {
   public static void Main(){
            string strNumber = "123123";
      try {
        char chrNumber = System.Convert.ToChar(strNumber[0]);
        Console.WriteLine(chrNumber);
      } 
      catch (System.ArgumentNullException) {
        System.Console.WriteLine("String is null");
      }
      catch (System.FormatException) {
        System.Console.WriteLine("String length is greater than 1.");
      }

    }
}