Amanda Wang - MSFT

Hi,

You can try to refer the below code the  change the datagrid's column 2 and row 2's font color to blue.

 private void peopleDataGrid_LoadingRow(object sender, DataGridRowEventArgs e)
        {
            if (e.Row.GetIndex() == 2)
            {
                this.peopleDataGrid.SelectedIndex = e.Row.GetIndex();
                DataGridColumn column = this.peopleDataGrid.Columns[1];
                FrameworkElement fe = column.GetCellContent(e.Row);
                FrameworkElement result = GetParent(fe, typeof(DataGridCell));
                if (result != null)
                {
                    DataGridCell cell = (DataGridCell)result;

                    cell.Foreground = new SolidColorBrush(Colors.Blue);
                }
            }
        }

        private FrameworkElement GetParent(FrameworkElement child, Type targetType)
        {
            object parent = child.Parent;
            if (parent != null)
            {
                if (parent.GetType() == targetType)
                {
                    return (FrameworkElement)parent;
                }
                else
                {
                    return GetParent((FrameworkElement)parent, targetType);
                }
            }
            return null;
        }

very nice [:)] it helped me too. thanks Amanda Wang