ApplicationBar Demo (以程式碼的方式建立)

Note：目前開發工具尚未RTM，此版本使用的開發工具為Beta版本，與RTM版本可能略有差異

在Windows Phone 7的環境中，在"功能表的部分也做了變更，現在除了傳統的文字功能表之外，也加入了ICON，而今天就來看看這個部分，主要是操作ApplicationBar與ApplicationBarIconButton，而建立的方式可以由XAML的介面建立，也可以純用程式碼來做，這一篇先來看看程式碼的部分

namespace ApplicationBarDemo
{
    public partial class MainPage : PhoneApplicationPage
    {

        TextBox tbSelectedItem = null;
        Button btnShowAppBar = null;

        // Constructor
        public MainPage()
        {
            InitializeComponent();

            this.ApplicationTitle.Text = "ApplicationBar Demo";
            //set up content grid
            RowDefinition RowOne = new RowDefinition();
            RowOne.Height = new GridLength(100, GridUnitType.Pixel);
            ContentGrid.RowDefinitions.Add(RowOne);
            RowDefinition RowTwo = new RowDefinition();
            RowTwo.Height = new GridLength(100, GridUnitType.Pixel);
            ContentGrid.RowDefinitions.Add(RowTwo);
            RowDefinition RowThree = new RowDefinition();
            RowThree.Height = new GridLength(100, GridUnitType.Auto);
            ContentGrid.RowDefinitions.Add(RowThree);
            //add a new textbox to content grid
            tbSelectedItem = new TextBox();
            tbSelectedItem.Name = "txtSelectedItem";
            tbSelectedItem.Text = "some text here";
            tbSelectedItem.Visibility = Visibility.Visible;
            Grid.SetRow(tbSelectedItem, 0);
            this.ContentGrid.Children.Add(tbSelectedItem);
            //add a button to contetn grid
            btnShowAppBar=new Button();
            btnShowAppBar.Content = "Show AppBar";
            Grid.SetRow(btnShowAppBar, 1);
            this.ContentGrid.Children.Add(btnShowAppBar);
            btnShowAppBar.Click += new RoutedEventHandler(btnShowAppBar_Click);
            //add a slider control to content grid
            Slider sdChangeOpacity = new Slider();
            sdChangeOpacity.Maximum=100; sdChangeOpacity.Minimum=0;
            Grid.SetRow(sdChangeOpacity, 2);
            this.ContentGrid.Children.Add(sdChangeOpacity);
            sdChangeOpacity.ValueChanged += new RoutedPropertyChangedEventHandler(sdChangeOpacity_ValueChanged);
            
        }

        //改變ApplicationBar的透明度
        void sdChangeOpacity_ValueChanged(object sender, RoutedPropertyChangedEventArgs e)
        {
            if (this.ApplicationBar == null)
                return;
            this.ApplicationBar.Opacity = e.NewValue / 100;
        }

        void btnShowAppBar_Click(object sender, RoutedEventArgs e)
        {
            AddIcon();
        }

        private void AddIcon()
        {
            if (this.ApplicationBar != null)
                this.ApplicationBar.Buttons.Clear();
            else
                this.ApplicationBar = new ApplicationBar();
            ApplicationBarIconButton[] newIconButton = new ApplicationBarIconButton[4];
            for (int i = 0; i < 4; i++)
            {
                newIconButton[i] = new ApplicationBarIconButton();
                newIconButton[i].IconUri = new Uri("Images/img" + i.ToString() + ".png", UriKind.Relative);
                newIconButton[i].Text = "Icon-" + i.ToString();
                newIconButton[i].Click += new EventHandler(IconButton_Click);
                this.ApplicationBar.Buttons.Add(newIconButton[i]);
            }
            this.ApplicationBar.IsVisible = true;
                
        }

        //applicationBar按鈕按下時的動作
        void IconButton_Click(object sender, EventArgs e)
        {
            ApplicationBarIconButton item = sender as ApplicationBarIconButton;
            tbSelectedItem.Text = item.Text;
        }
    }
}

執行的結果來看看影片的示範