C# Int64 Parse(String, NumberStyles, IFormatProvider)

Description

Int64 Parse(String, NumberStyles, IFormatProvider) converts the string representation of a number in a specified style and culture-specific format to its 64-bit signed integer equivalent.

Syntax

Int64.Parse(String, NumberStyles, IFormatProvider) has the following syntax.


public static long Parse(
  string s,/*from  w  ww  . j  a va  2s  . c o  m*/
  NumberStyles style,
  IFormatProvider provider
)

Parameters

Int64.Parse(String, NumberStyles, IFormatProvider) has the following parameters.

s - A string containing a number to convert.
style - A bitwise combination of enumeration values that indicates the style elements that can be present in s. A typical value to specify is Integer.
provider - An IFormatProvider that supplies culture-specific formatting information about s.

Returns

Int64.Parse(String, NumberStyles, IFormatProvider) method returns A 64-bit signed integer equivalent to the number specified in s.

Example

The following example uses a variety of style and provider parameters to parse the string representations of Int64 values.


/* w  ww.  j a v  a2  s  . c om*/

using System;
using System.Globalization;

public class ParseInt64
{
   public static void Main()
   {
      Convert("12,345", NumberStyles.Float | NumberStyles.AllowThousands, 
              new CultureInfo("en-GB"));
      Convert("12,345", NumberStyles.Float | NumberStyles.AllowThousands,
              new CultureInfo("fr-FR"));
      Convert("12,345", NumberStyles.Float, new CultureInfo("en-US"));

      Convert("12 345,00", NumberStyles.Float | NumberStyles.AllowThousands,
              new CultureInfo("sv-SE"));
      Convert("12,345.00", NumberStyles.Float | NumberStyles.AllowThousands,
              NumberFormatInfo.InvariantInfo);
      Convert("123,456", NumberStyles.Integer | NumberStyles.AllowDecimalPoint, 
              new CultureInfo("fr-FR"));
      Convert("123,456", NumberStyles.Integer | NumberStyles.AllowDecimalPoint,
              new CultureInfo("en-US"));
      Convert("123,456", NumberStyles.Integer | NumberStyles.AllowThousands,
              new CultureInfo("en-US"));
   }

   private static void Convert(string value, NumberStyles style, 
                               IFormatProvider provider)
   {
      try
      {
         long number = Int64.Parse(value, style, provider);
         Console.WriteLine("Converted '{0}' to {1}.", value, number);
      }
      catch (FormatException)
      {
         Console.WriteLine("Unable to convert '{0}'.", value);
      }   
      catch (OverflowException)
      {
         Console.WriteLine("'{0}' is out of range of the Int64 type.", value);   
      }
   }                               
}

The code above generates the following result.