BitConverter.GetBytes Method (Double)
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Returns the specified double-precision floating point value as an array of bytes.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<SecuritySafeCriticalAttribute> _
Public Shared Function GetBytes ( _
value As Double _
) As Byte()
[SecuritySafeCriticalAttribute]
public static byte[] GetBytes(
double value
)
Parameters
- value
Type: System.Double
The number to convert.
Return Value
Type: array<System.Byte[]
An array of bytes with length 8.
Examples
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.
Module Example
Const formatter As String = "{0,25:E16}{1,30}"
' Convert a Double argument to a Byte array and display it.
Sub GetBytesDouble(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal argument As Double)
Dim byteArray As Byte() = BitConverter.GetBytes(argument)
outputBlock.Text &= String.Format(formatter, argument, _
BitConverter.ToString(byteArray)) & vbCrLf
End Sub
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
outputBlock.Text &= String.Format( _
"This example of the BitConverter.GetBytes( Double ) " & _
vbCrLf & "method generates the following " & _
"output." & vbCrLf) & vbCrLf
outputBlock.Text &= String.Format(formatter, "Double", "Byte array") & vbCrLf
outputBlock.Text &= String.Format(formatter, "------", "----------") & vbCrLf
' 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, 0.00000000023283064365386963)
GetBytesDouble(outputBlock, 1.23456789012345E-300)
GetBytesDouble(outputBlock, 1.2345678901234565)
GetBytesDouble(outputBlock, 1.2345678901234567)
GetBytesDouble(outputBlock, 1.2345678901234569)
GetBytesDouble(outputBlock, 1.2345678901234568E+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)
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
// 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
*/
Version Information
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
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.