[RESOLVED] Treeview 3.5

[shakti5385]

Hello friends how to serializes a System.Windows.Forms.TreeView, both node and .Tag information, and returns a byte array. same for it's opposite how to deserializes a byte array to a System.Windows.Form.TreeView.

Thanks
Shakti

[Atheist]

The TreeView is not serializable, so it can not be seiralized. The TreeNode class can be serialized however, but the TreeNodeCollection can not.
Heres what I believe you'd need to do:

    Private Sub SerializeTreeViewInfo(ByVal instance As TreeView, ByVal output As Stream)
        Dim formatter As New System.Runtime.Serialization.Formatters.Binary.BinaryFormatter()
        Dim nodes As New List(Of TreeNode)

        For i As Integer = 0 To instance.Nodes.Count - 1
            nodes.Add(instance.Nodes(i))
        Next

        formatter.Serialize(output, nodes)

        If instance.Tag.GetType().IsSerializable Then
            formatter.Serialize(output, instance.Tag)
        End If
    End Sub

    Private Sub DeserializeTreeViewInfo(ByVal instance As TreeView, ByVal input As Stream)
        Dim formatter As New System.Runtime.Serialization.Formatters.Binary.BinaryFormatter()
        Dim nodes As List(Of TreeNode)

        nodes = DirectCast(formatter.Deserialize(input), List(Of TreeNode))

        For i As Integer = 0 To nodes.Count - 1
            instance.Nodes.Add(nodes(i))
        Next

        If input.Position <> input.Length Then
            instance.Tag = formatter.Deserialize(input)
        End If
    End Sub

This'll serialize the nodes and the tag, if possible directly to a stream...and not the TreeView itself.

[shakti5385]

Thanks I am looking code in c#

[Atheist]

Thanks I am looking code in c#

Oh..sorry about that, sometimes I confuse myself as I jump between the forums

        private void SerializeTreeViewInfo(TreeView instance, System.IO.Stream output){
            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
            List<TreeNode> nodes = new List<TreeNode>();

            for(int i = 0; i < instance.Nodes.Count; i++)
                nodes.Add(instance.Nodes[i]);

            formatter.Serialize(output, nodes);

            if(instance.Tag.GetType().IsSerializable)
                formatter.Serialize(output, instance.Tag);
        }

        private void DeserializeTreeViewInfo(TreeView instance, System.IO.Stream input){
            System.Runtime.Serialization.Formatters.Binary.BinaryFormatter formatter = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
            List<TreeNode> nodes;

            nodes = (List<TreeNode>)formatter.Deserialize(input);

            for(int i = 0; i < nodes.Count; i++)
                instance.Nodes.Add(nodes[i]);

            if(input.Position != input.Length)
                instance.Tag = formatter.Deserialize(input);
        }

[shakti5385]

Thanks I will update you soon

[shakti5385]

Hey thanks but here is some modification - A treeview is N-deep; this is 1-deep.

[Atheist]

How do you mean? My code should serialize all "levels" of nodes, no matter how deeply nested they are.

[shakti5385]

ok thanks