<DataGrid x:Name="Dg" AutoGenerateColumns="True" CanUserAddRows="False"

                      AutoGeneratingColumn="Dg_OnAutoGeneratingColumn"

private void TestPage_Loaded(object sender, RoutedEventArgs e)

        {

            var dt = new DataTable();

            dt.Columns.Add("ID");

            dt.Columns.Add("Name");

            dt.Columns.Add("gender");

            dt.Columns.Add("xAge");

            DataRow newRow = dt.NewRow();

            newRow["ID"] = "ID";

            newRow["Name"] = "Name";

            newRow["gender"] = "gender";

            newRow["xAge"] = "xAge";

            dt.Rows.Add(newRow);

            Dg.ItemsSource = dt.DefaultView;

        }

private void Dg_OnAutoGeneratingColumn(object sender, DataGridAutoGeneratingColumnEventArgs e)

        {

            var sexType = new List<string> { "Age", "gender", "ID", "Name","Country" };

            var column = new DataGridTemplateColumn { Header = e.PropertyName };

            var dataTemplate = new DataTemplate();

            var fef = new FrameworkElementFactory(typeof(ComboBox));

            var binding = new Binding { Source = sexType };

            fef.SetBinding(ItemsControl.ItemsSourceProperty, binding);

            var selectVal = new Binding(e.PropertyName);//根据列名设置默认值

            fef.SetBinding(Selector.SelectedValueProperty, selectVal);

            dataTemplate.VisualTree = fef;

            column.CellTemplate = dataTemplate;

            e.Column = column;

            e.Column.Width = 100;

        }