如果没有更多详细信息，请检查以下代码：

var guid = new Guid();
        var binary = new BsonBinaryData(guid, GuidRepresentation.Standard);
        var result = binary.ToGuid(GuidRepresentation.Standard);
        (guid == result).Should().BeTrue();

或：

var bytes = Convert.FromBase64String("E7hI3meCkEC5C/KU8w7BRQ==");
        var binaryData = new BsonBinaryData(bytes, BsonBinarySubType.UuidLegacy);
        var result = binaryData.ToGuid(GuidRepresentation.CSharpLegacy);
        var guid = new Guid(bytes);
        (guid == result).Should().BeTrue();