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BitConverter.GetBytes Method (Single)

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

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

public static byte[] GetBytes(
	float value


Type: System.Single
The number to convert.

Return Value

Type: System.Byte[]
An array of bytes with length 4.

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

// Example of the BitConverter.GetBytes( float ) method.
using System;

class Example
   const string formatter = "{0,16:E7}{1,20}";

   // Convert a float argument to a byte array and display it.
   public static void GetBytesSingle(System.Windows.Controls.TextBlock outputBlock, float 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( float ) " +
          "\nmethod generates the following output.\n") + "\n";
      outputBlock.Text += String.Format(formatter, "float", "byte array") + "\n";
      outputBlock.Text += String.Format(formatter, "-----", "----------") + "\n";

      // Convert float values and display the results.
      GetBytesSingle(outputBlock, 0.0F);
      GetBytesSingle(outputBlock, 1.0F);
      GetBytesSingle(outputBlock, 15.0F);
      GetBytesSingle(outputBlock, 65535.0F);
      GetBytesSingle(outputBlock, 0.00390625F);
      GetBytesSingle(outputBlock, 0.00000000023283064365386962890625F);
      GetBytesSingle(outputBlock, 1.2345E-35F);
      GetBytesSingle(outputBlock, 1.2345671F);
      GetBytesSingle(outputBlock, 1.2345673F);
      GetBytesSingle(outputBlock, 1.2345677F);
      GetBytesSingle(outputBlock, 1.23456789E+35F);
      GetBytesSingle(outputBlock, float.MinValue);
      GetBytesSingle(outputBlock, float.MaxValue);
      GetBytesSingle(outputBlock, float.Epsilon);
      GetBytesSingle(outputBlock, float.NaN);
      GetBytesSingle(outputBlock, float.NegativeInfinity);
      GetBytesSingle(outputBlock, float.PositiveInfinity);

This example of the BitConverter.GetBytes( float )
method generates the following output.

           float          byte array
           -----          ----------
  0.0000000E+000         00-00-00-00
  1.0000000E+000         00-00-80-3F
  1.5000000E+001         00-00-70-41
  6.5535000E+004         00-FF-7F-47
  3.9062500E-003         00-00-80-3B
  2.3283064E-010         00-00-80-2F
  1.2345000E-035         49-46-83-05
  1.2345671E+000         4B-06-9E-3F
  1.2345673E+000         4D-06-9E-3F
  1.2345676E+000         50-06-9E-3F
  1.2345679E+035         1E-37-BE-79
 -3.4028235E+038         FF-FF-7F-FF
  3.4028235E+038         FF-FF-7F-7F
  1.4012985E-045         01-00-00-00
             NaN         00-00-C0-FF
       -Infinity         00-00-80-FF
        Infinity         00-00-80-7F


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.

Community Additions

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