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I need to display a comma in my thousands separator. The below should work but it puts a space as the separator?
<telerik:GridViewDataColumn DataMemberBinding="{Binding BulkPickup, StringFormat='{}{0:n}', Mode=TwoWay}" Width="80">
<telerik:GridViewDataColumn.Header><TextBlock Text="Bulk Bank Pick Up" TextWrapping="Wrap"/></telerik:GridViewDataColumn.Header>
</telerik:GridViewDataColumn>