dataGridFirst.PreparingCellForEdit += new EventHandler<DataGridPreparingCellForEditEventArgs>(dataGridFirst_PreparingCellForEdit);void dataGridFirst_PreparingCellForEdit(object sender, DataGridPreparingCellForEditEventArgs e){Suppose this list(get and set values)//var myValue = dataGrid1.SelectedItem[0].ToString(); ClientsList selectedrow = ClientsList)dataGridFirst.SelectedItem;string Clientname = selectedrow.Name;int Clientid = selectedrow.ClientID;}

private void dataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e) {     DataGrid dataGrid = sender as DataGrid;  if (e.AddedItems!=null && e.AddedItems.Count>0)  {       // find row for the first selected item     DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromItem(e.AddedItems[0]);    if (row != null)   {          DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(row);   // find grid cell object for the cell with index 0       DataGridCell cell = presenter.ItemContainerGenerator.ContainerFromIndex(0) as DataGridCell;      if (cell != null)     {             Console.WriteLine(((TextBlock)cell.Content).Text);         }     }   }}static T GetVisualChild<T>(Visual parent) where T : Visual{ T child = default(T);int numVisuals = VisualTreeHelper.GetChildrenCount(parent); for (int i = 0; i < numVisuals; i++) { Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);child = v as T; if (child == null)child = GetVisualChild<T>(v);if (child != null)break;}return child;}