C# Convert ToUInt64(String, Int32)

Description

Convert ToUInt64(String, Int32) converts the string representation of a number in a specified base to an equivalent 64-bit unsigned integer.

Syntax

Convert.ToUInt64(String, Int32) has the following syntax.


[CLSCompliantAttribute(false)]// w  ww.j  a v a  2s  .  co  m
public static ulong ToUInt64(
  string value,
  int fromBase
)

Parameters

Convert.ToUInt64(String, Int32) has the following parameters.

value - A string that contains the number to convert.
fromBase - The base of the number in value, which must be 2, 8, 10, or 16.

Returns

Convert.ToUInt64(String, Int32) method returns A 64-bit unsigned integer that is equivalent to the number in value, or 0 (zero) if value is null.

Example


using System;/*from www .j  a  va2  s.  c  om*/
public class Example
{
   public static void Main()
   {
      string[] hexStrings = { "80000000", "0FFFFFFF", "F0000000", "00A3000", "D", 
                              "-13", "9AC61", "GAD", "FFFFFFFFFF" };

      foreach (string hexString in hexStrings)
      {
         Console.Write("{0,-12}  -->  ", hexString);
         try {
            uint number = Convert.ToUInt32(hexString, 16);
            Console.WriteLine("{0,18:N0}", number);
         }
         catch (FormatException) {
            Console.WriteLine("{0,18}", "Bad Format");
         }   
         catch (OverflowException)
         {
            Console.WriteLine("{0,18}", "Numeric Overflow");
         }   
         catch (ArgumentException) {
            Console.WriteLine("{0,18}", "Invalid in Base 16");
         }
      }                                            
   }
}

The code above generates the following result.