RhinoCommon Serialization Problem

Hello, I am trying to send geometry from grasshopper via tcpip; When I try to serialize some GeometryBase type objects (LineCurves) it raises the execption ... Would you tell me what is the problem? Thanks in advance...

Exception :
value cannot be null; parameter name : source

위치: System.Runtime.InteropServices.Marshal.CopyToManaged(IntPtr source, Object destination, Int32 startIndex, Int32 length) 위치: System.Runtime.InteropServices.Marshal.Copy(IntPtr source, Byte[] destination, Int32 startIndex, Int32 length) 위치: Rhino.Runtime.CommonObject.SerializeWriteON_Object(IntPtr pConstOnObject, SerializationInfo info, StreamingContext context) 위치: Rhino.Runtime.CommonObject.GetObjectData(SerializationInfo info, StreamingContext context) 위치: System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) 위치: System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Object obj, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter, ObjectWriter objectWriter) 위치: System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck) 위치: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck) 위치: System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph) 위치: Strauto.Generation.GHCOM_SAP2KRemote.BuildGeometry() 파일 C:\Users\pc\Documents\Visual Studio 2008\Projects\Strauto\Strauto\Interface Components\GHCOM_SAP2KRemote.cs:줄 160

My Source codes are....

List<GeometryBase> _Geoms;

.....

FileStream fs = new FileStream("DataFile.dat", FileMode.Create);//temp stream;
BinaryFormatter formatter = new BinaryFormatter();

try

{

formatter.Serialize(fs, _Geoms);
}

catch (SerializationException e)

{ _logbuilder.AppendFormat("Failed to serialize. Reason: " + e.Message);

}

catch(Exception ex)

{

_logbuilder.AppendFormat("Failed to serialize. Reason: " + ex.Message);

}

Replies to This Discussion

Permalink Reply by Steve Baer on March 29, 2012 at 12:46pm

Hi Sangsu,

The following code works fine in Rhino5. Are you running Rhino 4 or Rhino 5?

string filename = "C:\\MyDataFile.dat"; LineCurve lc = new LineCurve(Point3d.Origin, new Point3d(10, 11, 12)); Mesh m = Mesh.CreateFromSphere(new Sphere(Point3d.Origin, 6), 10, 10);

var list = new System.Collections.Generic.List(); list.Add(lc); list.Add(m);

var formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter(); using (var fs = new System.IO.FileStream(filename, System.IO.FileMode.Create)) { formatter.Serialize(fs, list); fs.Close(); } using (var fs = new System.IO.FileStream(filename, System.IO.FileMode.Open)) { object o = formatter.Deserialize(fs); var retrieved_list = o as System.Collections.Generic.List; fs.Close(); }

Permalink Reply by Sangsu Lee on March 30, 2012 at 12:20am

I am using Rhino4 on windows 7 64bit.

I tried your sample and it worked well.

It seems that the curves I have have some faults... they are from other grasshopper components and they have some user strings. I will try step by step to find out what is the cause of the problem.

Thanks.

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