in behind code, how can i read(or write) at specific cell

[kim]

 i added unbound GridViewColumn (uniquename flag) in RadGridView.

when i clicked "add button" 
how can i write(or read) a data in flag column at behind code.

<Button Content="add new" Height="23" HorizontalAlignment="Left" Margin="770,0,0,0" Name="button5" VerticalAlignment="Top" Width="75" Click="button5_Click" />
       <telerikGridView:RadGridView HorizontalAlignment="Left" Margin="12,69,0,0" Name="dataGrid1" VerticalAlignment="Top" Height="279" Width="1000" EditTriggers="CellClick" IsSynchronizedWithCurrentItem="True" RowIndicatorVisibility="Visible" ShowGroupPanel="False" AutoGenerateColumns="False" DataContext="{Binding}">
            <telerikGridView:RadGridView.Columns>
                <telerikGridView:GridViewColumn UniqueName="flag" Width="20" />
                <telerikGridView:GridViewDataColumn Header="사번" Width="60" DataMemberBinding="{Binding emp_no, Mode=TwoWay}" HeaderTextAlignment="Center" IsFilterable="False" />
                <telerikGridView:GridViewDataColumn Header="성명" Width="80".........................


-----------------------------------------------
behind code
------------------------------------------------

        private void button1_Click(object sender, RoutedEventArgs e)
        {
           //DataRow row = dataGrid1.Items.AddNew();
           //row["flag"] = "I";
           //row["reg_date"] = DateTime.Today.ToString("yyyyMMdd");
        }

[Milan]

Hello kim,

The correct way to do this is to the use updated the properties of the underlying data item. For example, if you would like to change the "emp_no" column you should get the item that should be updated from the Items collection of RadGRidView and update the "emp_no" property. If the data items support INotifyPrpertyChanged the grid will pick up the change and refresh its UI.

Sincerely yours,
Milan
the Telerik team

[david mcintyre]

My problem is that I am able to add a new row in codebehind and rebind.  I would like to customize the value of a single cell because the new custom value for that cell has a datatype that does not match the underlying dataobject.  In my case, the grid's first column serves as a rowheader, and the underlying datatype is an integer (which displays the year for the rest of the data in the row).  But the dynamically-added rows need to have text.  So how can i add these rowheader labels if i can't add them to the underlying itemssource?

[Vlad]

Hello,

 You can always have view model on the top of your original data and add desired additional property. 

All the best,
Vlad
the Telerik team