JohnSon:动态创建模块选项卡

 [ImportingConstructor]
        public VMain(VMMain main, IEventAggregator aggregator)
        {
            InitializeComponent();

            this.imCancel.MouseLeftButtonUp += new MouseButtonEventHandler(imgCancel_MouseLeftButtonUp); this.DataContext = main;
            vmMain = main;
            this.eventAggregator = aggregator;

            this.button1.Click += new RoutedEventHandler(ClickEvent);
    

            this.imCancel.MouseLeftButtonUp += new MouseButtonEventHandler(imgCancel_MouseLeftButtonUp);

            vmMain.ShowViewCommand.Execute("Home");
            eventAggregator.GetEvent<ModuleView>().Subscribe(ShowMainView, ThreadOption.UIThread, true);
        }

        private void imgCancel_MouseLeftButtonUp(object sender, EventArgs e)
        {
            vmMain.ShowViewCommand.Execute("Login");
        }

        private void ClickEvent(object sender, EventArgs e)
        {
            Button bt =sender as Button;
            string tabName = bt.Tag.ToString();
            TabItem tbFind = this.tabControl.FindName(tabName) as TabItem;

            if (tbFind == null)
            {
                vmMain.ShowViewCommand.Execute(tabName);
            }
            else
            {
                this.tabControl.SelectedItem = tbFind;
            }
        }

        private void ShowMainView(IView moduleView)
        {
            string mName = moduleView.ModuleName;
            ucPanel = moduleView as UserControl;
            ucPanel.Name = mName + "View";

            ScrollViewer scrv = new ScrollViewer();
            if (mName.Equals("Home"))
            {
                this.tabControl.Items.Add(new TabItem { Name = "Welcom", Header = "起始页", Content = SetScrollView(scrv, ucPanel) });
                return;
            }

            TabItem tb = new TabItem { Content = SetScrollView(scrv, ucPanel), Name = mName };
            DataTemplate dt = (DataTemplate)System.Windows.Markup.XamlReader.Load(@"<DataTemplate xmlns=""http://schemas.microsoft.com/client/2007"">
                        <Border CornerRadius=""8,8,0,0"">
                            <Grid >
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width=""*""/>
                                    <ColumnDefinition Width=""20""/>
                                </Grid.ColumnDefinitions>
                                <TextBlock Grid.Column=""0"" Text=""{Binding}"" Margin=""0,0,5,0""></TextBlock>
                                <Grid Grid.Column=""1"" Cursor=""Hand"" HorizontalAlignment=""Right"" Name=""Close"" Width=""15"" Height=""15"" >
                                </Grid>
                            </Grid>
                        </Border>
                    </DataTemplate>");

            var headPanel = dt.LoadContent() as Border;
            headPanel.DataContext = mName;
            if (headPanel != null)
            {
                Grid img = headPanel.FindName("Close") as Grid;
                if (img != null)
                {
                    //添加关闭事件
                    img.MouseLeftButtonUp += (s, ex) => { ex.Handled = true; TabItemClose(scrv, tb, img, ucPanel); };
                    tb.MouseEnter += (s, ex) => { ImgCloseDis(img); };
                    tb.MouseLeave += (s, ex) => { ImgCloseCancel(img); };
                }
            }

            tb.Header = headPanel;
            this.tabControl.Items.Add(tb);
            this.tabControl.SelectedItem = tb;
        }

        private void TabItemClose(ScrollViewer scrv, TabItem tbi, Grid img, UserControl uc)
        {
            tbi.Content = null;
            scrv.Content = null;
            tabControl.Items.Remove(tbi);
        }

        private void ImgCloseDis(Grid tbi)
        {
            ImageBrush ib = new ImageBrush();
            ib.ImageSource = new BitmapImage(new Uri(@"./Images/Close.png", UriKind.Relative));
            tbi.Background = ib;
        }

        private void ImgCloseCancel(Grid tbi)
        {
            tbi.Background = null;
        }

        private ScrollViewer SetScrollView(ScrollViewer scrv, UserControl usercon)
        {
            scrv.VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
            scrv.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
            scrv.Content = usercon;
            return scrv;
        }