Details and header of row in datagrid WPF

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Hello everybody!
I am trying to create a datagrid in wpf, which have row details is a other datagrid. I have done it. but now i want to process them.
Detail:
+ i want to select items in datagrid of detail when i click button. i could select items of datagrid parent.
+ In Rowheadtemplate i add togglebutton. I want to change color backgoround of togglebutton when value of one of the cell is "online"
So, i want to ask you. Can you help me?
Thank you so much. :)

What I have tried:

i catch select items of datagrid parent:

foreach (var item_dtg in dtg_ip.Items) // click icon-> row of dtg_IP
             {
                 if (((TextBlock)dtg_ip.Columns[0].GetCellContent(item_dtg)).Text.Trim() == imageTag.name)
                 {
                     dtg_ip.SelectedItem = item_dtg;
                     dtg_ip.ScrollIntoView(item_dtg);
                     break;
                 }
             }

Posted 14-Sep-16 16:57pm

nltd

Updated 14-Sep-16 17:56pm

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nltd · Answer 1 · 2016-09-14T17:56:00

i have done a problem two:
+ In Rowheadtemplate i add togglebutton. I want to change color backgoround of togglebutton when value of one of the cell is "online":

C#

private void Button_Click_2(object sender, RoutedEventArgs e)
{
    for (int i = 0; i < dataGrid1.Items.Count; i++)
    { // Surat
        DataGridRow row = (DataGridRow)dataGrid1.ItemContainerGenerator.ContainerFromIndex(i);
        FrameworkElement tb = GetTemplateChildByName(row, "RowHeaderToggleButton");
        if (((TextBlock)dataGrid1.Columns[1].GetCellContent(dataGrid1.Items[i])).Text == "Online")
        {
            ToggleButton tgb = (ToggleButton)tb;
            tgb.Background = Brushes.Blue;
        }
    }
}

The first remaining issue.Can you have me a solution? thank you so much.