How to get the datagrid value cell value with column name on row double click Insted of item array index?

How to get the datagrid value cell value with column name on row double
click Insted of item array index?

How to get the datagrid value cell value with column name on row double
click Insted of item array index.I generate columns with query?
private void grid_supplier_MouseDoubleClick(object sender,
MouseButtonEventArgs e)
{
if (grid_supplier.SelectedItem == null) return;
DataRowView dr = grid_supplier.SelectedItem as DataRowView;
DataRow dr1 = dr.Row;
txt_hiden_edit_id.Text = Convert.ToString(dr1.ItemArray[0]);
comb_supplier_name.SelectedValue =
Convert.ToString(dr1.ItemArray[1]);
datepicker_supplier.SelectedDate =
DateTime.Parse(Convert.ToString(dr1.ItemArray[2]));
txt_payment.Text = Convert.ToString(dr1.ItemArray[3]);
txt_reciept_number.Text = Convert.ToString(dr1.ItemArray[4]);
txt_quantity.Text = Convert.ToString(dr1.ItemArray[5]);
txt_code.Text = Convert.ToString(dr1.ItemArray[6]);
}