why is the graphics pen object is not serializable ??? anyone knows why ?

[maged]

Dear all,
i have been using binary serialzer to serialize some graphics objects and images into one file so that i can save and load them later into use inside my simple software.

all images, fonts , color variables inside my class (which is declared as <serializable> by the way ) is serialized successfully. when i add a pen object to the class i get an error ?

here is the error

-----------------------------------------------------------------------
System.Runtime.Serialization.SerializationException: The type System.Drawing.Pen in Assembly System.Drawing, Version=1.0.5000.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a is not marked as serializable.
at System.Runtime.Serialization.FormatterServices.InternalGetSerializableMembers(RuntimeType type, Boolean excludeNonSerializable)
at System.Runtime.Serialization.FormatterServices.GetSerializableMembers(Type type, StreamingContext context)
at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitMemberInfo()
at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.InitSerialize(Type objectType, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter)
at System.Runtime.Serialization.Formatters.Binary.WriteObjectInfo.Serialize(Type objectType, ISurrogateSelector surrogateSelector, StreamingContext context, SerObjectInfoInit serObjectInfoInit, IFormatterConverter converter)
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Write(WriteObjectInfo objectInfo, NameInfo memberNameInfo, NameInfo typeNameInfo)
at System.Runtime.Serialization.Formatters.Binary.ObjectWriter.Serialize(Object graph, Header[] inHeaders, __BinaryWriter serWriter, Boolean fCheck)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers, Boolean fCheck)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph, Header[] headers)
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Serialize(Stream serializationStream, Object graph)
at SoftexTravelControl.FrmHotelFlyers.Button14_Click(Object sender, EventArgs e) in E:\travelmdl.mdl
------------------------------------------------------------------------

what is this error ??

thank you in advance

rgds

Maged A. Reda

[jmcilhinney]

The type System.Drawing.Pen ... is not marked as serializable.

To be serialisable a type must be decorated with the Serializable attribute.

[maged]

yes i have read the error. and i understand it of course

i am asking if the pen type is always unserilizable and if there is anything that i can do about to include it in my serialization process.

please note that i am talking the pen type and not my class, my class is marked as <serializable> and it accepts serialization when it doesnt contain a pen variable

is there anything that i can do to work around this issue.

also i remarked in the error this :
The type System.Drawing.Pen in Assembly System.Drawing, Version=1.0.5000.0,

is there any other versions of framework that are serializable ???

thx for your time jmcilhinney

[wossname]

It appears that several graphics objects are nonserialisable.

However, you can always use GDI+'s metafile support to store complex vector graphics. see MSDN.

[maged]

why cant i inherits from the pen class and mark my new class type as serializable ??