BitConverter.GetBytes Method (Double)

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

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[SecuritySafeCriticalAttribute]
public static byte[] GetBytes(
	double value
)

Parameters

value
Type: System.Double
The number to convert.

Return Value

Type: System.Byte[]
An array of bytes with length 8.

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.
using System;

class Example
{
   const string formatter = "{0,25:E16}{1,30}";

   // Convert a double argument to a byte array and display it.
   public static void GetBytesDouble(System.Windows.Controls.TextBlock outputBlock, double argument)
   {
      byte[] byteArray = BitConverter.GetBytes(argument);
      outputBlock.Text += String.Format(formatter, argument,
          BitConverter.ToString(byteArray)) + "\n";
   }

   public static void Demo(System.Windows.Controls.TextBlock outputBlock)
   {
      outputBlock.Text += String.Format(
          "This example of the BitConverter.GetBytes( double ) " +
          "\nmethod generates the following output.\n") + "\n";
      outputBlock.Text += String.Format(formatter, "double", "byte array") + "\n";
      outputBlock.Text += String.Format(formatter, "------", "----------") + "\n";

      // Convert double values and display the results.
      GetBytesDouble(outputBlock, 0.0);
      GetBytesDouble(outputBlock, 1.0);
      GetBytesDouble(outputBlock, 255.0);
      GetBytesDouble(outputBlock, 4294967295.0);
      GetBytesDouble(outputBlock, 0.00390625);
      GetBytesDouble(outputBlock, 0.00000000023283064365386962890625);
      GetBytesDouble(outputBlock, 1.23456789012345E-300);
      GetBytesDouble(outputBlock, 1.2345678901234565);
      GetBytesDouble(outputBlock, 1.2345678901234567);
      GetBytesDouble(outputBlock, 1.2345678901234569);
      GetBytesDouble(outputBlock, 1.23456789012345678E+300);
      GetBytesDouble(outputBlock, double.MinValue);
      GetBytesDouble(outputBlock, double.MaxValue);
      GetBytesDouble(outputBlock, double.Epsilon);
      GetBytesDouble(outputBlock, double.NaN);
      GetBytesDouble(outputBlock, double.NegativeInfinity);
      GetBytesDouble(outputBlock, double.PositiveInfinity);
   }
}

/*
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
*/


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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