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IE Webcontrols treeview control

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Hi, I am populating a treeview from a text document using
the streamreader function. The whole document is read and
the treeview populated correctly. I now need to check the
status of each node (Checked/unchecked) but since I am
building the tree from a text file, i am only able to
read columns from the file and not actual entries. Anyone
have any ideas on how I could access the properties of
the nodes??
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