C# Int64 Parse(String, NumberStyles)

Description

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

Syntax

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


public static long Parse(
  string s,
  NumberStyles style
)

Parameters

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

s - A string containing a number to convert.
style - A bitwise combination of NumberStyles values that indicates the permitted format of s. A typical value to specify is Integer.

Returns

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

Example

The following example uses the Int64.Parse(String, NumberStyles) method to parse the string representations of several Int64 values.


/*from  ww w  .jav a2  s.  c om*/
using System;
using System.Globalization;

public class ParseInt32
{
   public static void Main()
   {
      Convert("123.0", NumberStyles.AllowDecimalPoint);
      Convert("123.9", NumberStyles.AllowDecimalPoint);
      Convert (" 123456", NumberStyles.None);
      Convert(" $12,345,678.89", NumberStyles.AllowCurrencySymbol |
                                 NumberStyles.Number);
      Convert(" $12,345,678.90", NumberStyles.AllowCurrencySymbol |
                                 NumberStyles.Number);
      Convert("123E06", NumberStyles.AllowExponent);
      Convert("1230E-02", NumberStyles.AllowExponent);
      Convert("1230E-03", NumberStyles.AllowExponent);
      Convert("-1,234,789", NumberStyles.AllowThousands);
      Convert("(1,234,789)", NumberStyles.AllowThousands |
                             NumberStyles.AllowParentheses);
      Convert("FFCA00A0", NumberStyles.HexNumber);                       
      Convert("0xFFCA00A0", NumberStyles.HexNumber);                       
   }

   private static void Convert(string value, NumberStyles style)
   {
      try
      {
         long number = Int64.Parse(value, style);
         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.