protected override int OnMarshalParameter(int i, RpcMethodParameterCollection inParameters, IList <IDataType> inParameterTypes, object[] parameterValues, byte[] buffer, int offset)
{
ITcAdsDataType type = (ITcAdsDataType)inParameterTypes[i];
object val = parameterValues[i];
AdsDatatypeId dataTypeId = type.DataTypeId;
int num = 0;
if (PrimitiveTypeConverter.CanMarshal(type.Category))
{
byte[] data = null;
PrimitiveTypeConverter.Marshal(dataTypeId, val, out data);
num = copyHelper(buffer, offset, data);
}
else
{
if (type.Category != DataTypeCategory.String)
{
throw new MarshalException($"Cannot marshal complex type '{type.Name}'");
}
int length = -1;
bool isUnicode = false;
DataTypeStringParser.TryParseString(type.Name, out length, out isUnicode);
string str = (string)val;
byte[] source = null;
PlcStringConverter converter = isUnicode ? PlcStringConverter.UnicodeVariableLength : PlcStringConverter.DefaultVariableLength;
if (converter.MarshalSize(str) > type.ByteSize)
{
throw new MarshalException("String size mismatch");
}
source = converter.Marshal(str);
num = copyHelper(buffer, offset, source);
}
return(num);
}
public void WritePlcAnsiStringFixedLength(string value, int byteSize)
{
byte[] buffer = PlcStringConverter.MarshalAnsi(value, StringConvertMode.FixedLengthZeroTerminated, byteSize);
this.Write(buffer);
}
public string ReadPlcUnicodeString(int byteLength)
{
byte[] bytes = this.ReadBytes(byteLength);
return(PlcStringConverter.UnmarshalUnicode(bytes, 0, bytes.Length));
}
public string ReadPlcString(int byteLength, Encoding encoding)
{
byte[] bytes = this.ReadBytes(byteLength);
return(PlcStringConverter.Unmarshal(bytes, 0, bytes.Length, encoding, StringConvertMode.FixedLengthZeroTerminated));
}
