c# - WPF Combobox DataBound to a DataTable, Refresh automatically -

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i have 1 combobox databinding datatable fetching data database follows: 

sqldataadapter adp = new sqldataadapter     (@"select [categoryid],[categoryname]from [northwind].[dbo].[categories]",       @"integrated security=sspi;initial catalog=northwind;data source=akshay-pc\sqlexpress");  datatable tbl = new datatable(); adp.fill(tbl);  cmbcities.itemssource = ((ilistsource)tbl).getlist();  cmbcities.displaymemberpath = "[categoryname]"; cmbcities.selectedvaluepath = "[categoryid]";

when table data changed(added/removed rows), combobox not refreshed because ilist not have change notification built it.

is there way can made possible?

if it's not possible, there way "refresh" databinding datatable fetch data again. in case, execute above code when window initialized , refresh again without needing execute same code again. cmbcities.data.refresh().

what using observablecollection storage data after fetching db?

http://wpflog.blogspot.com/2009/04/very-simple-observablecollection.html


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