C# BitConverter ToInt64

Description

BitConverter ToInt64 returns a 64-bit signed integer converted from eight bytes at a specified position in a byte array.

Syntax

BitConverter.ToInt64 has the following syntax.

public static long ToInt64(
  byte[] value,
  int startIndex
)

Parameters

BitConverter.ToInt64 has the following parameters.

• value - An array of bytes.
• startIndex - The starting position within value.

Returns

BitConverter.ToInt64 method returns A 64-bit signed integer formed by eight bytes beginning at startIndex.

Example

The following code example converts elements of Byte arrays to Int64 values with the ToInt64 method.

// www.  j  a  va2  s.c  o m

using System;

class BytesToInt64Demo
{
    public static void Main( )
    {
        byte[ ] bytes = {
            255, 255, 255, 255,   1,   0,   0, 255, 255, 255, 
            255, 255, 255, 255, 127,  86,  85,  85,  85,  85, 
             88,  76,  73,  31, 242 };

        long value = BitConverter.ToInt64( bytes, 3 );

        Console.WriteLine(value );

    }
}

The code above generates the following result.