how to make the treeview serialisable

Question

hello


i tried to serialize the treeview but i am getting an error like this 

ype 'System.Windows.Forms.TreeView' in Assembly 'System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' is not marked as serializable.


so how can we explicitly make the treeview serialisable i have tried [serialisable] on top of the class then also it is getting


please replay me


Thanks&Regards

Ginnas

Answer 1

Dear ginnas,

how could you marked [serialisable] attribute to a predefined class? That is npt possible, since you can not change the code of predefined classes.

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Answer 2

Create a new control that inherits from TreeView and implement ISerializable.

Your serialzation routine will need to manually record property values of the TreeView and then will need to recursively walk the nodes collection, adding enough information to the stream to be able to recreate the treenodes.

Then your deserialization routine would create a new TreeView instance, set its properties according to the values you saved, and then load all of its tree nodes (create new TreeNodes and setting their properties) according to the info you saved when walking the nodes collection.

The specific information you write to the stream will depend on how your TreeView is being used.  You'll need to save as much information as it takes to recreate the TreeView from a new instance of the control.

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