C# Int64 TryParse(String, Int64)

Description

Int64 TryParse(String, Int64) converts the string representation of a number to its 64-bit signed integer equivalent. A return value indicates whether the conversion succeeded or failed.

Syntax

Int64.TryParse(String, Int64) has the following syntax.

public static bool TryParse(
  string s,
  out long result
)

Parameters

Int64.TryParse(String, Int64) has the following parameters.

• s - A string containing a number to convert.
• result - When this method returns, contains the 64-bit signed integer value equivalent of the number contained in s, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is null or String.Empty, is not of the correct format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.

Returns

Int64.TryParse(String, Int64) method returns true if s was converted successfully; otherwise, false.

Example

The following example calls the Int32.TryParse(String, Int32) method with a number of different string values.

//ww w  .  ja  va 2 s . c om
using System;

public class StringParsing
{
   public static void Main()
   {
      TryToParse(null);
      TryToParse("123456");
      TryToParse("9876.0");
      TryToParse("12,345");
      TryToParse("   -322   ");
      TryToParse("+4321");
      TryToParse("(100);");
      TryToParse("01FA");
   }

   private static void TryToParse(string value)
   {
      int number;
      bool result = Int32.TryParse(value, out number);
      if (result)
      {
         Console.WriteLine("Converted '{0}' to {1}.", value, number);         
      }
      else
      {
         if (value == null) value = ""; 
         Console.WriteLine("Attempted conversion of '{0}' failed.", value);
      }
   }
}

The code above generates the following result.