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extract only literals from DataGrid.Item.Cells collection

if i wish to extract string values from a DataGrid.Items.Cells collection
but convert any pure formatting characters to null-strings, what is the best
method ?

for example, DataGrid.SelectedItem.Cells(0)=" " fr those cells that
were bound to empty DataTable.Row.Columns .... however, i would like to
retrieve them as null-strings ....
Nov 18 '05 #1
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