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BitConverter.GetBytes Method (Double)

Returns the specified double-precision floating point value as an array of bytes.

Namespace:  System
Assemblies:   System.Runtime.Extensions (in System.Runtime.Extensions.dll)
  mscorlib (in mscorlib.dll)

'Declaration
Public Shared Function GetBytes ( _
	value As Double _
) As Byte()

Parameters

value
Type: System.Double

The number to convert.

Return Value

Type: System.Byte()
An array of bytes with length 8.

The order of bytes in the array returned by the GetBytes method depends on whether the computer architecture is little-endian or big-endian.

The following code example converts the bit patterns of Double values to Byte arrays with the GetBytes method.

' Example of the BitConverter.GetBytes( Double ) method. 
Imports System
Imports Microsoft.VisualBasic

Module GetBytesDoubleDemo

    Const formatter As String = "{0,25:E16}{1,30}" 

    ' Convert a Double argument to a Byte array and display it. 
    Sub GetBytesDouble( argument As Double )

        Dim byteArray As Byte( ) = BitConverter.GetBytes( argument )
        Console.WriteLine( formatter, argument, _
            BitConverter.ToString( byteArray ) )
    End Sub  

    Sub Main( )

        Console.WriteLine( _
            "This example of the BitConverter.GetBytes( Double ) " & _
            vbCrLf & "method generates the following " & _
            "output." & vbCrLf )
        Console.WriteLine( formatter, "Double", "Byte array" )
        Console.WriteLine( formatter, "------", "----------" )

        ' Convert Double values and display the results.
        GetBytesDouble( 0.0 )
        GetBytesDouble( 1.0 )
        GetBytesDouble( 255.0 )
        GetBytesDouble( 4294967295.0 )
        GetBytesDouble( 0.00390625 )
        GetBytesDouble( 0.00000000023283064365386962890625 )
        GetBytesDouble( 1.23456789012345E-300 )
        GetBytesDouble( 1.2345678901234565 )
        GetBytesDouble( 1.2345678901234567 )
        GetBytesDouble( 1.2345678901234569 )
        GetBytesDouble( 1.23456789012345678E+300 )
        GetBytesDouble( Double.MinValue )
        GetBytesDouble( Double.MaxValue )
        GetBytesDouble( Double.Epsilon )
        GetBytesDouble( Double.NaN )
        GetBytesDouble( Double.NegativeInfinity )
        GetBytesDouble( Double.PositiveInfinity )
    End Sub  
End Module 

' This example of the BitConverter.GetBytes( Double ) 
' method generates the following output. 
'  
'                    Double                    Byte array 
'                    ------                    ---------- 
'   0.0000000000000000E+000       00-00-00-00-00-00-00-00 
'   1.0000000000000000E+000       00-00-00-00-00-00-F0-3F 
'   2.5500000000000000E+002       00-00-00-00-00-E0-6F-40 
'   4.2949672950000000E+009       00-00-E0-FF-FF-FF-EF-41 
'   3.9062500000000000E-003       00-00-00-00-00-00-70-3F 
'   2.3283064365386963E-010       00-00-00-00-00-00-F0-3D 
'   1.2345678901234500E-300       DF-88-1E-1C-FE-74-AA-01 
'   1.2345678901234565E+000       FA-59-8C-42-CA-C0-F3-3F 
'   1.2345678901234567E+000       FB-59-8C-42-CA-C0-F3-3F 
'   1.2345678901234569E+000       FC-59-8C-42-CA-C0-F3-3F 
'   1.2345678901234569E+300       52-D3-BB-BC-E8-7E-3D-7E 
'  -1.7976931348623157E+308       FF-FF-FF-FF-FF-FF-EF-FF 
'   1.7976931348623157E+308       FF-FF-FF-FF-FF-FF-EF-7F 
'   4.9406564584124654E-324       01-00-00-00-00-00-00-00 
'                       NaN       00-00-00-00-00-00-F8-FF 
'                 -Infinity       00-00-00-00-00-00-F0-FF 
'                  Infinity       00-00-00-00-00-00-F0-7F

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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