Using Interactive Modes in Windows Phone 7

Take the following steps to start a project and to add some code that demonstrates the various Interactive Modes in Windows Phone 7.

Start Visual Studio .NET 2010 or higher
Start with the project that you created in Loading and displaying an image in Windows Phone 7.

Open the MainPage.xaml file and copy the below xaml code into the editor:

[XAML]


            <phone:PhoneApplicationPage 
                x:Class="LoadingAndDisplayingAnImageWindowsPhone.MainPage"
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
                xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
                xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
                mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
                FontFamily="{StaticResource PhoneFontFamilyNormal}"
                FontSize="{StaticResource PhoneFontSizeNormal}"
                Foreground="{StaticResource PhoneForegroundBrush}"
                SupportedOrientations="Portrait" Orientation="Portrait"
                shell:SystemTray.IsVisible="True" xmlns:my="clr-namespace:Leadtools.Windows.Controls;assembly=Leadtools.Windows.Controls" Loaded="PhoneApplicationPage_Loaded">
                <!--LayoutRoot is the root grid where all page content is placed-->
                <Grid x:Name="LayoutRoot" Background="Transparent">
                  <StackPanel Orientation="Vertical">
                     <my:RasterImageViewer Name="rasterImageViewer" Height="480" Width="480" SizeMode="Fit" InteractiveMode="None"/>
                     <Button Name="_btnLoadFromLibrary" Click="_btnLoadFromLibrary_Click" Content="Load From Library"></Button>
                     <Button Name="_btnLoadFromURL" Click="_btnLoadFromURL_Click" Content="Load From URL"></Button>
                     <ListBox Name="_lbInteractiveMode" SelectionChanged="_lbInteractiveMode_SelectionChanged" HorizontalAlignment="Center">
                        <ListBoxItem Name="_lbiMagGlass" Content="Magnify Glass"></ListBoxItem>
                        <ListBoxItem Name="_lbiZoomTo" Content="Zoom To"></ListBoxItem>
                        <ListBoxItem Name="_lbiCenterAt" Content="Center At"></ListBoxItem>
                        <ListBoxItem Name="_lbiScale" Content="Scale"></ListBoxItem>
                        <ListBoxItem Name="_lbiPan" Content="Pan"></ListBoxItem>
                     </ListBox>
                  </StackPanel>
                </Grid>
            </phone:PhoneApplicationPage>

Switch to MainPage.xaml code view (right-click Page.xaml in the solution explorer then select View Code) and add the following class function:

[C#]


              
                  private void _lbInteractiveMode_SelectionChanged(object sender, SelectionChangedEventArgs e)
                  {
                     switch (_lbInteractiveMode.SelectedIndex)
                     {
                        case 0:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.MagnifyGlass;
                           break;
                        case 1:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.ZoomTo;
                           break;
                        case 2:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.CenterAt;
                           break;
                        case 3:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.Scale;
                           break;
                        case 4:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.Pan;
                           break;
                        default:
                           rasterImageViewer.InteractiveMode = Leadtools.Windows.Controls.InteractiveMode.None;
                           break;
                     }
                  }

Build, and Run the program to test it.

Click the "Load From URL" button to load an image from a URL.

Click the "Load From Library" button to load an image from the Windows Phone photo library.

Click the various Interactive Mode options in the listbox.

NOTE: If you encounter and "Invalid File Format" or "Feature Not Supported" exception, please refer to the topic Invalid File Format/Feature Not Supported.