Hi ,
Thanks for your interest in Syncfusion products.
Please use the below code snippet to save the DockState.
AppStateSerializer serializer = new AppStateSerializer(SerializeMode.XMLFile, "..\\..\\Test");
this.dockingManager1.SaveDockState(serializer);
serializer.PersistNow();
Please refer to the following sample that demonstrates the serialization and deserialization of the state of docked controls. In this sample, you can save the docked controls’ state by using SaveDockState button and you can load the serialized state by using LoadDockState button .
http://websamples.syncfusion.com/samples/Tools.Windows/F73638/main.htmPlease let me know if this helps.
Regards,
Nagaraj