[Gtk-sharp-list] How to search a TreeStore and use a CellRendererCombo?

[a B]

Hello,
1) I'm trying to check if a specific string exists in a TreeStore (which contains strings). I tried using the Foreach method but I cannot send the string to the TreeModelForeachFunc which I created. What should I do?
2) I want the cells in a specific column to be editable using a CellRendererCombo. How do I do it?

My code is just a basic declaration of a TreeStore which contains two columns of strings.


      
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