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Scroll Viewer Control in Windows Store App

Posted by Shubham Srivastava Articles | Windows Store Apps May 08, 2012
In this article we will use a scroll viewer control to show an image in a scrollable area.
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Introduction

In this article we will explain one of the controls of Metro style applications; The Scroll Viewer. The purpose of this control is to provide the ability to scroll the content showin in it. This control is in the system.windows.controls namespace.

Here we will take an image that will be shown within the scrollable area of a scroll viewer control. The size of the image control is larger than the grid control containing the image control. So by the use of the scrolling capability we can see the whole image.

Step 1 : First of all you will create a new Metro Style Application. Let us see the description with images of how you will create it.

  • Open Visual Studio 2011
  • File -> New -> Project
  • Choose Template -> Visual C# ->Metro Style Application
  • Rename this Application

img1.gif

Step 2 : In the Solution Explorer there are two files that we will primarily work with; BlankPage.xaml and BlankPage.xaml.cs files.

img2.gif

Step 3 : The BlankPage.xaml file is as in the following code:

Code :

<Page
    x:Class="Application23.BlankPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Application23"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <Page.Resources>
        <Style x:Key="BaseStatusStyle" TargetType="TextBlock">
            <Setter Property="FontFamily" Value="Segoe UI Semilight"/>
            <Setter Property="FontSize" Value="14.667"/>
            <Setter Property="Margin" Value="0,0,0,5"/>
        </Style>
        <Style x:Key="StatusStyle" BasedOn="{StaticResource BaseStatusStyle}" TargetType="TextBlock">
            <Setter Property="Foreground" Value="Green"/>
        </Style>
        <Style x:Key="ErrorStyle" BasedOn="{StaticResource BaseStatusStyle}" TargetType="TextBlock">
            <Setter Property="Foreground" Value="Blue"/>
        </Style>
    </Page.Resources>
   <Grid x:Name="LayoutRoot" Background="White">

        <!--App Orientation States-->

         <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="OrientationStates">
                <VisualState x:Name="FullScreenLandscapeScale100Percent"/>
                <VisualState x:Name="FilledScale100Percent">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="ContentRoot">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>40,20,40,20</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(StackPanel.Orientation)" Storyboard.TargetName="InputPanel">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Orientation>Horizontal</Orientation>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.MaxWidth)" Storyboard.TargetName="ScenarioInput">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="700">
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="FullScreenPortraitScale100Percent">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="ContentRoot">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>40,20,40,20</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.MaxWidth)" Storyboard.TargetName="ScenarioInput">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="400">
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="SnappedScale100Percent">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="ContentRoot">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>20,20,20,20</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(StackPanel.Orientation)" Storyboard.TargetName="InputPanel">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Orientation>Vertical</Orientation>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.MaxWidth)" Storyboard.TargetName="ScenarioInput">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="250">
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="LegalPanel">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>0,0,10,0</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="FullScreenLandscapeScale140Percent">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="ContentRoot">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>40,20,40,20</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(StackPanel.Orientation)" Storyboard.TargetName="InputPanel">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Orientation>Horizontal</Orientation>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.MaxWidth)" Storyboard.TargetName="ScenarioInput">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="600">
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="FilledScale140Percent"/>
                <VisualState x:Name="FullScreenPortraitScale140Percent">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="ContentRoot">
                            <DiscreteObjectKeyFrame KeyTime="0">
                                <DiscreteObjectKeyFrame.Value>
                                    <Thickness>40,20,40,20</Thickness>
                                </DiscreteObjectKeyFrame.Value>
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.MaxWidth)" Storyboard.TargetName="ScenarioInput">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="250">
                            </DiscreteObjectKeyFrame>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>
                <VisualState x:Name="SnappedScale140Percent"/>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <Grid x:Name="ContentRoot" Background="LimeGreen" Margin="100,20,100,20">
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
                <RowDefinition Height="Auto"/>
           </Grid.RowDefinitions>

             <!-- Content -->

        <Grid HorizontalAlignment="Left" VerticalAlignment="Top">
              <TextBlock Text="ScrollView in Metro Apps" FontSize="50" Foreground="Red"></TextBlock>
        </
Grid>

            <!-- Content -->

            <Grid HorizontalAlignment="Left" VerticalAlignment="Center" Margin="100,50,100,50" Height="500" Width="500">
                <ScrollViewer VerticalScrollBarVisibility="Visible"
                   HorizontalScrollBarVisibility="Visible">
                    <Image Source="21.jpg" Height="1000" Width="1000" ></Image>
                </ScrollViewer>
            </Grid>
        </Grid>
    </Grid>
</
Page>

 Step 4 : After running this code the output look like this:

img3.gif

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