public void WritePropertyValue(string propertyName, object value) { var valueType = value.GetType(); var loc = _offsetTable[propertyName]; var property = GetType().GetProperty(propertyName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance); var attribute = property.GetAttribute <BinaryDataAttribute>(); byte[] buffer; var endian = false; var noresize = false; if (attribute.StringReadOptions == StringReadOptions.NullTerminated) { buffer = attribute.Encoding.GetBytes((string)value + "\0"); var length = buffer.Length - 2; var diff = length - loc.Length; _offsetTable.ShiftOffsetsFrom(propertyName, diff); var oldpos = loc.Offset + loc.Length; Binary.MoveBytes(oldpos, oldpos + diff, Binary.Length - oldpos); if (diff < 0) { Binary.Resize(Binary.Length + diff); } loc.Length = length; noresize = true; } else if (attribute.StringReadOptions == StringReadOptions.ID) { buffer = ((string)value).FromHex(); Array.Reverse(buffer); //TODO: support endian in FromHex } else if (value is string) { buffer = attribute.Encoding.GetBytes((string)value); } else if (value is DateTime) { buffer = ByteArrayExtensions.FromDateTime((DateTime)value); } else if (value is Version) { buffer = ByteArrayExtensions.FromVersion((Version)value); } else if (valueType.IsArray) { var elementType = valueType.GetElementType(); if (elementType == typeof(byte)) { buffer = (byte[])value; } else if (elementType.IsEnum) { buffer = new byte[loc.Length]; var array = (Array)value; for (var i = 0; i < loc.Length; i++) { buffer[i] = Convert.ToByte(array.GetValue(i)); } } else { throw new NotSupportedException("Invalid array type: " + valueType); } } else { if (value is Enum) { valueType = Enum.GetUnderlyingType(valueType); } if (valueType == typeof(byte)) { buffer = new[] { (byte)value } } ; else if (valueType == typeof(short)) { buffer = BitConverter.GetBytes((short)value); } else if (valueType == typeof(ushort)) { buffer = BitConverter.GetBytes((ushort)value); } else if (valueType == typeof(int)) { buffer = BitConverter.GetBytes((int)value); } else if (valueType == typeof(uint)) { buffer = BitConverter.GetBytes((uint)value); } else if (valueType == typeof(long)) { buffer = BitConverter.GetBytes((long)value); } else if (valueType == typeof(ulong)) { buffer = BitConverter.GetBytes((ulong)value); } else { throw new NotSupportedException("Unknown value type: " + valueType.Name); } endian = true; } if (!noresize) { Array.Resize(ref buffer, loc.Length); } if (endian && attribute.EndianType == EndianType.BigEndian) { Array.Reverse(buffer); } Binary.WriteBytes(loc.Offset, buffer, 0, loc.Length); }