WPF Grid + DataGrid多表頭 動态列實作

使用了Grid + DataGrid 顯示

Grid部分（表頭部分）用了GridSplitter作為列的區分，可以調節列寬，（未實作自動排序）

DataGrid部分，隐藏DataGrid的Header部分

界面部分：

<Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="63"></RowDefinition>
                    <RowDefinition Height ="*"></RowDefinition>
                </Grid.RowDefinitions>
                <Grid Grid.Row="0"  x:Name ="GridHs" ShowGridLines="False" Height ="63" VerticalAlignment ="Top">
                   </Grid>
                <DataGrid Grid.Row="1"  x:Name ="DataGridHs"  HeadersVisibility="None"  ItemsSource="{Binding}" DisplayMemberPath="Data"  Height ="400" CanUserAddRows =" False"  VerticalAlignment="Top"  AutoGenerateColumns="False" ></DataGrid>
            </Grid>

        </Grid>

public MainWindow()
        {
            InitializeComponent();
       BuildDG2();
            BuildDG21();
        }

public ObservableCollection<ObservableCollection<string>> datas2 = new ObservableCollection<ObservableCollection<string>>();

        void BuildDG2()
        {
            for (int i = ; i < 4; i++)
            {
                ColumnDefinition column1 = new ColumnDefinition();
                column1.Width = GridLength.Auto;
                this.GridHs.ColumnDefinitions.Add(column1);

                ColumnDefinition column = new ColumnDefinition();
                column.Width = new GridLength();
                this.GridHs.ColumnDefinitions.Add(column);
            }

            for (int i = ; i < 3; i++)
            {
                this.GridHs.RowDefinitions.Add(new RowDefinition());
                RowDefinition column = new RowDefinition();
                column.Height = new GridLength();
                this.GridHs.RowDefinitions.Add(column);
            }

            for (int i = ; i < 3; i++)
            {
                for (int j = ; j < 4; j++)
                {
                    if (i ==  && j == )
                    {
                        continue;
                    }
                    UniformGrid gridTitle = new UniformGrid();

                    Border b = new Border();
                    b.VerticalAlignment = VerticalAlignment.Stretch;
                    b.HorizontalAlignment = HorizontalAlignment.Stretch;
                    b.Name = "Grid" + i + j;

                    Pen p = new Pen();

                    b.BorderBrush = new SolidColorBrush(Colors.Green);
                    b.BorderThickness = new System.Windows.Thickness();



                    TextBlock tbxTitleChinese = new TextBlock();

                    b.Child = tbxTitleChinese;

                    tbxTitleChinese.Text = "國文" + i + j;
                    tbxTitleChinese.Width = ;
                    tbxTitleChinese.Height = ;

                    gridTitle.Children.Add(b);

                    gridTitle.SetValue(Grid.RowProperty, i*);
                    gridTitle.SetValue(Grid.ColumnProperty, j*);
                    this.GridHs.Children.Add(gridTitle);

                    if (i ==  && j == )
                    {
                        Grid.SetColumnSpan(gridTitle,);
                        b.Width = ;
                    }

                    if (i==)
                    {
                        Binding bd = new Binding();
                        bd.Path = new System.Windows.PropertyPath("Width");
                        bd.ElementName = @"行" + i;
                        BindingOperations.SetBinding(gridTitle, WidthProperty, bd);
                    }
                }
            }

            for (int i = ; i < 4; i++)
            {
                GridSplitter gSp = new GridSplitter();
                gSp.Background = new SolidColorBrush(Colors.Green);
                gSp.HorizontalAlignment = HorizontalAlignment.Stretch;
                gSp.Width = ;

                if (i == )
                {
                    gSp.SetValue(Grid.RowProperty, );
                }
                else
                {
                    gSp.SetValue(Grid.RowProperty, );
                }
                gSp.SetValue(Grid.ColumnProperty, i *  + );
                this.GridHs.Children.Add(gSp);
                Grid.SetRowSpan(gSp, );
            }

        }
        void BuildDG21()
        {
            for (int i = ; i < 10; i++)
            {
                ObservableCollection<string> columnsList = new ObservableCollection<string>();
                for (int j = ; j < 4; j++)
                {
                    columnsList.Add((i + j + ).ToString());
                }
                datas2.Add(columnsList);
            }

            for (int i = ; i < 4; i++)
            {
                DataGridTextColumn dgColumn = new DataGridTextColumn();
                dgColumn.Header = @"行" + i;
                dgColumn.SetValue(NameProperty, @"行" + i);
                this.DataGridHs.Columns.Add(dgColumn);

                MultiBinding mbd = new MultiBinding();
                Binding bd1 = new Binding("[" + i + "]");


                Binding bd2 = new Binding();
                bd2.Path = new System.Windows.PropertyPath("ActualWidth");
                bd2.Source = LogicalTreeHelper.FindLogicalNode(this.GridHs,"Grid2" + i);           

                dgColumn.Binding = bd1;
                BindingOperations.SetBinding(dgColumn, DataGridTextColumn.WidthProperty, bd2);               
            }

            this.DataGridHs.DataContext = datas2; 
        }