cant convert papersource to list

Question

Hi im trying to convert winform to asp.net, i have one fail i cant see how to solve:

1. PaperSource pkSource;
2. List<object> listPaperSource = new List<object>();
3. protected void comboFillPapersource()
4. {
5. for (int i = 0; i < printDoc.PrinterSettings.PaperSources.Count; i++)
6. {
7. if (printDoc.PrinterSettings.PaperSources[i].SourceName == "test")
8. {
9. pkSource = printDoc.PrinterSettings.PaperSources[i];
10. }
11. listPaperSource.Add(printDoc.PrinterSettings.PaperSources[i]);
12. }
14. DropDownPaperSource.DataSource = listPaperSource;
15. DropDownPaperSource.DataTextField = "SourceName";
16. DropDownPaperSource.DataValueField = "RawKind";
17. DropDownPaperSource.SelectedItem = pkSource;
18. DropDownPaperSource.DataBind();
19. }

the code prints papersources from a defined printer. its the second last line that fail, with, cant convert papersource to itemlist (DropDownPaperSource.SelectedItem = pkSource; 

With the error cant convert papersourse to listitem



 :/