Serializing TreeView and DataGridView controls states

[Nodir Gulyamov]

Hello All,
First of all thanks in advance to everyone who will try to help me.
I have Form with TreeView control and DataGridView control. Each TreeNode has its own rows and due to I am placing rows to ArrayList and store it in
tag of TreeNode like this:

// dgv - DataGridView visible within whole class

private void treeView1_After Select(object sender, TreeViewEventAr gs e)
{
dgv.Rows.Clear( );
dgv.Columns.Cle ar();
DataGridViewChe ckBoxColumn ins = new DataGridViewChe ckBoxColumn();
ins.Name = "Insert";
ins.HeaderText = "Insert;
ins.Width = 90;

DataGridViewTex tBoxColumn itemName = new DataGridViewTex tBoxColumn();
itemName.Header Text = "Item name";
itemName.Name = "itemName";
itemName.Width = (dgv.Width - ins.Width - 43) / 2;

DataGridViewTex tBoxColumn itemValue = new DataGridViewTex tBoxColumn();
itemValue.Heade rText = "Item Value";
itemValue.Name = "itemValue" ;
itemValue.Width = (dgv.Width - ins.Width - 43) / 2;

DataGridViewCom boBoxColumn mdfLink = new DataGridViewCom boBoxColumn();
mdfLink.Name = "mdfLink";
mdfLink.HeaderT ext = "MDF Link";
mdfLink.Width = (dgv.Width - 80) / 6;
mdfLink.DropDow nWidth = mdfLink.Width * 2;

dgv.Columns.Add Range(new DataGridViewCol umn[] {ins,itemName,i temValue, mdfLink});

if (treeView1.Sele ctedNode.Tag != null)
{
ArrayList al = (ArrayList)tree View1.SelectedN ode.Tag;
foreach (object obj in al)
{
dgv.Rows.Add((D ataGridViewRow) obj);
}
}
else
{
// fill rows manually
// ...
}
}

private void treeView1_Befor eSelect(object sender, TreeViewCancelE ventArgs e)
{
ArrayList al = new ArrayList();
foreach (DataGridViewRo w dgvr in dgv.Rows)
{
al.Add(dgvr);
}
if (al.Count != 0)
{
treeView1.Selec tedNode.Tag = al;
}
}

And I need to store state of TreeView in a file by serialization to future restoring (I know that TreeView doesn't support serialization but TreeNoew
does). But DataGridViewRow is not support serialization.
As matter of fact I tried to store values in string arrays and populate it accordingly.

My question is:
1. Is anybody know better way of serialization of treeview with attached DataGridView?
2. In case of using my method how do I save/restore selected item of ComboBoxCell?

I will appreciate any help.

Best regards,
/Gelios