Hi,

Tag are saved automatically if their types are marked as [Serializable]. However that relies on BinaryFormatter, which is now obsolete. You can still use it in dotnet 8 by adding a project flag:

https://learn.microsoft.com/en-us/answers/questions/2259767/how-can-i-use-binary...

Dotnet 10 dropped BinaryFormatter altogether and we'll be migrating diagram's clipboard storage to XML format instead for upcoming release.

Alternatively, if you don't need to copy and paste between different processes but only current one, you could use CopySelection / PasteSelection methods instead.

Regards,
Slavcho
Mindfusion

I added the [Serializable] decorators to the necessary classes and added the flag to the project. Now it looks like not even the DiagramItems are copied anymore.. However, I marked some of the custom class fields with [NonSerialized] since I do not want to serialize everything. Would that be the problem?

Hi Slavcho,

I solved the problem when I added the serialization constructors to my classes, e.g.

protected ClassName(SerializationInfo info, StreamingContext context)
{
     Id = info.GetString("Id");
}
 

It took a while to find out because there was not exception thrown although I enabled to throw any exceptions.

Besides, can you tell when the release with replacing the BinaryFormatter serialization will happen?