public string MyToString(int number) { StringBuilder myNumber = new StringBuilder(); while (number != 0) { var tempNumber = number%10; number /=10; switch (tempNumber) { case 0: myNumber.Insert(0, '0'); break; case 1: myNumber.Insert(0, '1'); break; case 2: myNumber.Insert(0, '2'); break; case 3: myNumber.Insert(0, '3'); break; case 4: myNumber.Insert(0, '4'); break; case 5: myNumber.Insert(0, '5'); break; case 6: myNumber.Insert(0, '6'); break; case 7: myNumber.Insert(0, '7'); break; case 8: myNumber.Insert(0, '8'); break; case 9: myNumber.Insert(0, '9'); break; } } return myNumber.ToString(); }