| public static FromBytes ( byte bytes, GuidRepresentation representation ) : System.Guid | ||
| bytes | byte | The byte array. |
| representation | GuidRepresentation | The representation of the Guid in the byte array. |
| return | System.Guid | |
public static Guid FromBytes(byte[] bytes, GuidRepresentation representation)
{
if (bytes.Length != 16)
{
var message = string.Format("Length of byte array must be 16, not {0}.", bytes.Length);
throw new ArgumentException(message);
}
bytes = (byte[])bytes.Clone();
switch (representation)
{
case GuidRepresentation.CSharpLegacy:
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(bytes, 0, 4);
Array.Reverse(bytes, 4, 2);
Array.Reverse(bytes, 6, 2);
}
break;
case GuidRepresentation.JavaLegacy:
Array.Reverse(bytes, 0, 8);
Array.Reverse(bytes, 8, 8);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes, 0, 4);
Array.Reverse(bytes, 4, 2);
Array.Reverse(bytes, 6, 2);
}
break;
case GuidRepresentation.PythonLegacy:
case GuidRepresentation.Standard:
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes, 0, 4);
Array.Reverse(bytes, 4, 2);
Array.Reverse(bytes, 6, 2);
}
break;
case GuidRepresentation.Unspecified:
throw new InvalidOperationException("Unable to convert byte array to Guid because GuidRepresentation is Unspecified.");
default:
throw new BsonInternalException("Unexpected GuidRepresentation.");
}
return new Guid(bytes);
}
/// <summary>
/// Converts this BsonBinaryData to a Guid.
/// </summary>
/// <param name="guidRepresentation">The representation for Guids.</param>
/// <returns>A Guid.</returns>
public Guid ToGuid(GuidRepresentation guidRepresentation)
{
if (_subType != BsonBinarySubType.UuidStandard && _subType != BsonBinarySubType.UuidLegacy)
{
var message = string.Format("SubType must be UuidStandard or UuidLegacy, not {0}.", _subType);
throw new InvalidOperationException(message);
}
if (guidRepresentation == GuidRepresentation.Unspecified)
{
throw new ArgumentException("GuidRepresentation cannot be Unspecified.");
}
return(GuidConverter.FromBytes(_bytes, guidRepresentation));
}
