BitConverter.ToString Method

Definition

Converts the numeric value of each element of a specified array of bytes to its equivalent hexadecimal string representation.

Overloads

ToString(Byte[])

Converts the numeric value of each element of a specified array of bytes to its equivalent hexadecimal string representation.

ToString(Byte[], Int32)

Converts the numeric value of each element of a specified subarray of bytes to its equivalent hexadecimal string representation.

ToString(Byte[], Int32, Int32)

Converts the numeric value of each element of a specified subarray of bytes to its equivalent hexadecimal string representation.

ToString(Byte[])

Source:
BitConverter.cs
Source:
BitConverter.cs
Source:
BitConverter.cs

Converts the numeric value of each element of a specified array of bytes to its equivalent hexadecimal string representation.

C#
public static string ToString(byte[] value);

Parameters

value
Byte[]

An array of bytes.

Returns

A string of hexadecimal pairs separated by hyphens, where each pair represents the corresponding element in value; for example, "7F-2C-4A-00".

Exceptions

value is null.

Examples

The following code example converts Byte arrays to String objects with the ToString method.

C#
// Example of the BitConverter.ToString( byte[ ] ) method.
using System;

class BytesToStringDemo
{
    // Display a byte array with a name.
    public static void WriteByteArray( byte[ ] bytes, string name )
    {
        const string underLine = "--------------------------------";

        Console.WriteLine( name );
        Console.WriteLine( underLine.Substring( 0,
            Math.Min( name.Length, underLine.Length ) ) );
        Console.WriteLine( BitConverter.ToString( bytes ) );
        Console.WriteLine( );
    }

    public static void Main( )
    {
        byte[ ] arrayOne = {
             0,   1,   2,   4,   8,  16,  32,  64, 128, 255 };

        byte[ ] arrayTwo = {
            32,   0,   0,  42,   0,  65,   0, 125,   0, 197,
             0, 168,   3,  41,   4, 172,  32 };

        byte[ ] arrayThree = {
            15,   0,   0, 128,  16,  39, 240, 216, 241, 255,
           127 };

        byte[ ] arrayFour = {
            15,   0,   0,   0,   0,  16,   0, 255,   3,   0,
             0, 202, 154,  59, 255, 255, 255, 255, 127 };

        Console.WriteLine( "This example of the " +
            "BitConverter.ToString( byte[ ] ) \n" +
            "method generates the following output.\n" );

        WriteByteArray( arrayOne, "arrayOne" );
        WriteByteArray( arrayTwo, "arrayTwo" );
        WriteByteArray( arrayThree, "arrayThree" );
        WriteByteArray( arrayFour, "arrayFour" );
    }
}

/*
This example of the BitConverter.ToString( byte[ ] )
method generates the following output.

arrayOne
--------
00-01-02-04-08-10-20-40-80-FF

arrayTwo
--------
20-00-00-2A-00-41-00-7D-00-C5-00-A8-03-29-04-AC-20

arrayThree
----------
0F-00-00-80-10-27-F0-D8-F1-FF-7F

arrayFour
---------
0F-00-00-00-00-10-00-FF-03-00-00-CA-9A-3B-FF-FF-FF-FF-7F
*/

Remarks

All the elements of value are converted.

Applies to

.NET 10 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToString(Byte[], Int32)

Source:
BitConverter.cs
Source:
BitConverter.cs
Source:
BitConverter.cs

Converts the numeric value of each element of a specified subarray of bytes to its equivalent hexadecimal string representation.

C#
public static string ToString(byte[] value, int startIndex);

Parameters

value
Byte[]

An array of bytes.

startIndex
Int32

The starting position within value.

Returns

A string of hexadecimal pairs separated by hyphens, where each pair represents the corresponding element in a subarray of value; for example, "7F-2C-4A-00".

Exceptions

value is null.

startIndex is less than zero or greater than the length of value minus 1.

Examples

The following code example converts the part of a Byte array starting at the specified startIndex to a String with the ToString method.

C#
// Example of some BitConverter.ToString( ) method overloads.
using System;

class BytesToStringDemo
{
    // Display a byte array, using multiple lines if necessary.
    public static void WriteMultiLineByteArray( byte[ ] bytes,
        string name )
    {
        const int rowSize = 20;
        const string underLine = "--------------------------------";
        int iter;

        Console.WriteLine( name );
        Console.WriteLine( underLine.Substring( 0,
            Math.Min( name.Length, underLine.Length ) ) );

        for( iter = 0; iter < bytes.Length - rowSize; iter += rowSize )
        {
            Console.Write(
                BitConverter.ToString( bytes, iter, rowSize ) );
            Console.WriteLine( "-" );
        }

        Console.WriteLine( BitConverter.ToString( bytes, iter ) );
        Console.WriteLine( );
    }

    public static void Main( )
    {
        byte[ ] arrayOne = {
              0,   0,   0,   0, 128,  63,   0,   0, 112,  65,
              0, 255, 127,  71,   0,   0, 128,  59,   0,   0,
            128,  47,  73,  70, 131,   5,  75,   6, 158,  63,
             77,   6, 158,  63,  80,   6, 158,  63,  30,  55,
            190, 121, 255, 255, 127, 255, 255, 127, 127,   1,
              0,   0,   0, 192, 255,   0,   0, 128, 255,   0,
              0, 128, 127 };

        byte[ ] arrayTwo = {
            255, 255, 255,   0,   0,  20,   0,  33,   0,   0,
              0,   1,   0,   0,   0, 100, 167, 179, 182, 224,
             13,   0, 202, 154,  59,   0, 143,  91,   0, 170,
            170, 170, 170, 170, 170,   0,   0, 232, 137,   4,
             35, 199, 138, 255, 232, 244, 255, 252, 205, 255,
            255, 129 };

        byte[ ] arrayThree = {
              0, 222,   0,   0,   0, 224, 111,  64,   0,   0,
            224, 255, 255, 255, 239,  65,   0,   0, 131,   0,
              0,   0, 112,  63,   0, 143,   0, 100,   0,   0,
            240,  61, 223, 136,  30,  28, 254, 116, 170,   1,
            250,  89, 140,  66, 202, 192, 243,  63, 251,  89,
            140,  66, 202, 192, 243,  63, 252,  89, 140,  66,
            202, 192, 243,  63,  82, 211, 187, 188, 232, 126,
            255, 255, 255, 244, 255, 239, 127,   1,   0,   0,
              0,  10,  17,   0,   0, 248, 255,   0,  88,   0,
             91,   0,   0, 240, 255,   0,   0, 240, 157 };

        Console.WriteLine( "This example of the\n" +
            "  BitConverter.ToString( byte[ ], int ) and \n" +
            "  BitConverter.ToString( byte[ ], int, int ) \n" +
            "methods generates the following output.\n" );

        WriteMultiLineByteArray( arrayOne, "arrayOne" );
        WriteMultiLineByteArray( arrayTwo, "arrayTwo" );
        WriteMultiLineByteArray( arrayThree, "arrayThree" );
    }
}

/*
This example of the
  BitConverter.ToString( byte[ ], int ) and
  BitConverter.ToString( byte[ ], int, int )
methods generates the following output.

arrayOne
--------
00-00-00-00-80-3F-00-00-70-41-00-FF-7F-47-00-00-80-3B-00-00-
80-2F-49-46-83-05-4B-06-9E-3F-4D-06-9E-3F-50-06-9E-3F-1E-37-
BE-79-FF-FF-7F-FF-FF-7F-7F-01-00-00-00-C0-FF-00-00-80-FF-00-
00-80-7F

arrayTwo
--------
FF-FF-FF-00-00-14-00-21-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
0D-00-CA-9A-3B-00-8F-5B-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
23-C7-8A-FF-E8-F4-FF-FC-CD-FF-FF-81

arrayThree
----------
00-DE-00-00-00-E0-6F-40-00-00-E0-FF-FF-FF-EF-41-00-00-83-00-
00-00-70-3F-00-8F-00-64-00-00-F0-3D-DF-88-1E-1C-FE-74-AA-01-
FA-59-8C-42-CA-C0-F3-3F-FB-59-8C-42-CA-C0-F3-3F-FC-59-8C-42-
CA-C0-F3-3F-52-D3-BB-BC-E8-7E-FF-FF-FF-F4-FF-EF-7F-01-00-00-
00-0A-11-00-00-F8-FF-00-58-00-5B-00-00-F0-FF-00-00-F0-9D
*/

Remarks

The elements from array position startIndex to the end of the array are converted.

Applies to

.NET 10 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

ToString(Byte[], Int32, Int32)

Source:
BitConverter.cs
Source:
BitConverter.cs
Source:
BitConverter.cs

Converts the numeric value of each element of a specified subarray of bytes to its equivalent hexadecimal string representation.

C#
public static string ToString(byte[] value, int startIndex, int length);

Parameters

value
Byte[]

An array of bytes that includes the bytes to convert.

startIndex
Int32

The starting position within value.

length
Int32

The number of array elements in value to convert.

Returns

A string of hexadecimal pairs separated by hyphens, where each pair represents the corresponding element in a subarray of value; for example, "7F-2C-4A-00".

Exceptions

value is null.

startIndex or length is less than zero.

-or-

startIndex is greater than zero and is greater than or equal to the length of value.

The combination of startIndex and length does not specify a position within value; that is, the startIndex parameter is greater than the length of value minus the length parameter.

Examples

The following example uses the ToString method to convert part of a byte array, starting at the specified startIndex and with the specified length, to a string.

C#
// Example of some BitConverter.ToString( ) method overloads.
using System;

class BytesToStringDemo
{
    // Display a byte array, using multiple lines if necessary.
    public static void WriteMultiLineByteArray( byte[ ] bytes,
        string name )
    {
        const int rowSize = 20;
        const string underLine = "--------------------------------";
        int iter;

        Console.WriteLine( name );
        Console.WriteLine( underLine.Substring( 0,
            Math.Min( name.Length, underLine.Length ) ) );

        for( iter = 0; iter < bytes.Length - rowSize; iter += rowSize )
        {
            Console.Write(
                BitConverter.ToString( bytes, iter, rowSize ) );
            Console.WriteLine( "-" );
        }

        Console.WriteLine( BitConverter.ToString( bytes, iter ) );
        Console.WriteLine( );
    }

    public static void Main( )
    {
        byte[ ] arrayOne = {
              0,   0,   0,   0, 128,  63,   0,   0, 112,  65,
              0, 255, 127,  71,   0,   0, 128,  59,   0,   0,
            128,  47,  73,  70, 131,   5,  75,   6, 158,  63,
             77,   6, 158,  63,  80,   6, 158,  63,  30,  55,
            190, 121, 255, 255, 127, 255, 255, 127, 127,   1,
              0,   0,   0, 192, 255,   0,   0, 128, 255,   0,
              0, 128, 127 };

        byte[ ] arrayTwo = {
            255, 255, 255,   0,   0,  20,   0,  33,   0,   0,
              0,   1,   0,   0,   0, 100, 167, 179, 182, 224,
             13,   0, 202, 154,  59,   0, 143,  91,   0, 170,
            170, 170, 170, 170, 170,   0,   0, 232, 137,   4,
             35, 199, 138, 255, 232, 244, 255, 252, 205, 255,
            255, 129 };

        byte[ ] arrayThree = {
              0, 222,   0,   0,   0, 224, 111,  64,   0,   0,
            224, 255, 255, 255, 239,  65,   0,   0, 131,   0,
              0,   0, 112,  63,   0, 143,   0, 100,   0,   0,
            240,  61, 223, 136,  30,  28, 254, 116, 170,   1,
            250,  89, 140,  66, 202, 192, 243,  63, 251,  89,
            140,  66, 202, 192, 243,  63, 252,  89, 140,  66,
            202, 192, 243,  63,  82, 211, 187, 188, 232, 126,
            255, 255, 255, 244, 255, 239, 127,   1,   0,   0,
              0,  10,  17,   0,   0, 248, 255,   0,  88,   0,
             91,   0,   0, 240, 255,   0,   0, 240, 157 };

        Console.WriteLine( "This example of the\n" +
            "  BitConverter.ToString( byte[ ], int ) and \n" +
            "  BitConverter.ToString( byte[ ], int, int ) \n" +
            "methods generates the following output.\n" );

        WriteMultiLineByteArray( arrayOne, "arrayOne" );
        WriteMultiLineByteArray( arrayTwo, "arrayTwo" );
        WriteMultiLineByteArray( arrayThree, "arrayThree" );
    }
}

/*
This example of the
  BitConverter.ToString( byte[ ], int ) and
  BitConverter.ToString( byte[ ], int, int )
methods generates the following output.

arrayOne
--------
00-00-00-00-80-3F-00-00-70-41-00-FF-7F-47-00-00-80-3B-00-00-
80-2F-49-46-83-05-4B-06-9E-3F-4D-06-9E-3F-50-06-9E-3F-1E-37-
BE-79-FF-FF-7F-FF-FF-7F-7F-01-00-00-00-C0-FF-00-00-80-FF-00-
00-80-7F

arrayTwo
--------
FF-FF-FF-00-00-14-00-21-00-00-00-01-00-00-00-64-A7-B3-B6-E0-
0D-00-CA-9A-3B-00-8F-5B-00-AA-AA-AA-AA-AA-AA-00-00-E8-89-04-
23-C7-8A-FF-E8-F4-FF-FC-CD-FF-FF-81

arrayThree
----------
00-DE-00-00-00-E0-6F-40-00-00-E0-FF-FF-FF-EF-41-00-00-83-00-
00-00-70-3F-00-8F-00-64-00-00-F0-3D-DF-88-1E-1C-FE-74-AA-01-
FA-59-8C-42-CA-C0-F3-3F-FB-59-8C-42-CA-C0-F3-3F-FC-59-8C-42-
CA-C0-F3-3F-52-D3-BB-BC-E8-7E-FF-FF-FF-F4-FF-EF-7F-01-00-00-
00-0A-11-00-00-F8-FF-00-58-00-5B-00-00-F0-FF-00-00-F0-9D
*/

Remarks

The length elements from array position startIndex are converted. If length equals zero, the method returns String.Empty.

Applies to

.NET 10 and other versions
Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0