Guid.ToByteArray Method

Source:

Guid.cs

Source:

Guid.cs

public: cli::array <System::Byte> ^ ToByteArray(bool bigEndian);

public byte[] ToByteArray(bool bigEndian);

member this.ToByteArray : bool -> byte[]

Public Function ToByteArray (bigEndian As Boolean) As Byte()

Parameters

Returns

Source:

Guid.cs

Source:

Guid.cs

Source:

Guid.cs

public: cli::array <System::Byte> ^ ToByteArray();

public byte[] ToByteArray();

member this.ToByteArray : unit -> byte[]

Public Function ToByteArray () As Byte()

Returns

A 16-element byte array.

Examples

The following example calls the NewGuid method to create a Guid value, and then calls the ToByteArray method to represent the Guid value as a byte array. It then displays both values to the console. Finally, it instantiates a new Guid value from the byte array and calls its Equals(Guid) method to show that the two Guid values are identical.

Guid guid = Guid.NewGuid(); Console.WriteLine($"Guid: {guid}"); var bytes = guid.ToByteArray(); foreach (var byt in bytes) Console.Write($"{byt:X2} "); Console.WriteLine(); var guid2 = new Guid(bytes); Console.WriteLine($"Guid: {guid2} (Same as First Guid: {guid2.Equals(guid)})"); // The example displays output similar to the following: // // Guid: 35918bc9-196d-40ea-9779-889d79b753f0 // C9 8B 91 35 6D 19 EA 40 97 79 88 9D 79 B7 53 F0 // Guid: 35918bc9-196d-40ea-9779-889d79b753f0 (Same as First Guid: True) 

let guid = Guid.NewGuid() printfn $"Guid: {guid}" let bytes = guid.ToByteArray() for byte in bytes do printf $"{byte:X2} " printfn "" let guid2 = Guid bytes printfn $"Guid: {guid2} (Same as First Guid: {guid2.Equals(guid)})" // The example displays output similar to the following: // // Guid: 35918bc9-196d-40ea-9779-889d79b753f0 // C9 8B 91 35 6D 19 EA 40 97 79 88 9D 79 B7 53 F0 // Guid: 35918bc9-196d-40ea-9779-889d79b753f0 (Same as First Guid: True) 

Module Example Public Sub Main() Dim guid As Guid = Guid.NewGuid Console.WriteLine("Guid: {0}", guid) Dim bytes() As Byte = guid.ToByteArray For Each byt In bytes Console.Write("{0:X2} ", byt) Next Console.WriteLine() Dim guid2 As New Guid(bytes) Console.WriteLine("Guid: {0} (Same as First Guid: {1})", guid2, guid2.Equals(guid)) End Sub End Module ' The example displays the following output: ' Guid: 35918bc9-196d-40ea-9779-889d79b753f0 ' C9 8B 91 35 6D 19 EA 40 97 79 88 9D 79 B7 53 F0 ' Guid: 35918bc9-196d-40ea-9779-889d79b753f0 (Same as First Guid: True) 

Remarks

You can use the byte array returned by this method to round-trip a Guid value by calling the Guid(Byte[]) constructor.

Note that the order of bytes in the returned byte array is different from the string representation of a Guid value. The order of the beginning four-byte group and the next two two-byte groups is reversed, whereas the order of the last two-byte group and the closing six-byte group is the same. The example provides an illustration.