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Custom Themes in Silverlight


Introduction

This article demonstrate how we can create our own themes in silverlight.

We can create our own custom themes in silverlight application.

Step 1: Create one SilverlightClassLibrary

We have OwnTheme folder in our application, in that folder we have two resourcedirectory files,

First AliceBlueTheme.xaml and SilverTheme.xaml.

AliceBlueTheme :

<Style TargetType="Button">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="Foreground" Value="Black"/>
         <Setter Property="BorderBrush" Value="LightBlue"/>
     </Style>

    <Style TargetType="Border">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderBrush" Value="LightBlue"/>
         <Setter Property="BorderThickness" Value="1"/>
     </Style>

    <Style TargetType="CheckBox">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderBrush" Value="AliceBlue"/>
         <Setter Property="Foreground" Value="Black"/>

    </Style>

    <Style TargetType="StackPanel">
         <Setter Property="Orientation" Value="Vertical"/>
         <Setter Property="Background" Value="AliceBlue"/>
     </Style>

    <Style TargetType="HyperlinkButton">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderBrush" Value="AliceBlue"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="Foreground" Value="Black"/>
     </Style>

    <Style TargetType="ComboBox">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="BorderBrush" Value="AliceBlue"/>
     </Style>

    <Style TargetType="ComboBoxItem">
         <Setter Property="Background" Value="AliceBlue"/>
         <Setter Property="BorderBrush" Value="AliceBlue"/>
         <Setter Property="BorderThickness" Value="0.5"/>
         <Setter Property="Foreground" Value="Black"/>
     </Style>

SilverTheme :

  <Style TargetType="Button">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="Foreground" Value="Black"/>
         <Setter Property="BorderBrush" Value="LightGray"/>
     </Style>

    <Style TargetType="Border">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderBrush" Value="Black"/>
         <Setter Property="BorderThickness" Value="1"/>
     </Style>

    <Style TargetType="CheckBox">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderBrush" Value="Silver"/>
         <Setter Property="Foreground" Value="Black"/>

    </Style>

    <Style TargetType="StackPanel">
         <Setter Property="Orientation" Value="Vertical"/>
         <Setter Property="Background" Value="Silver"/>
     </Style>

    <Style TargetType="HyperlinkButton">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderBrush" Value="Silver"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="Foreground" Value="Black"/>
     </Style>

    <Style TargetType="ComboBox">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderThickness" Value="1"/>
         <Setter Property="BorderBrush" Value="Silver"/>
     </Style>

    <Style TargetType="ComboBoxItem">
         <Setter Property="Background" Value="Silver"/>
         <Setter Property="BorderBrush" Value="Silver"/>
         <Setter Property="BorderThickness" Value="0.5"/>
         <Setter Property="Foreground" Value="Black"/>
     </Style>

Step 2:

Now we have two other resourcedirectory file where we keep the path of our crated themes

(AliceTheme and SilverTheme) as below,

Theme.Xaml :

<ResourceDictionary.MergedDictionaries>
         <ResourceDictionary Source="/CustomThemesinSilverlight;component/OwnThemes/AliceBlueTheme.xaml"/>
</ResourceDictionary.MergedDictionaries>

Theme1.xaml :

<ResourceDictionary.MergedDictionaries>
         <ResourceDictionary Source="/CustomThemesinSilverlight;component/OwnThemes/SilverThemes.xaml"/>
</ResourceDictionary.MergedDictionaries>

Step 3:

We have two classes in our silverlight application like,Silverthemeclass.cs and Aliceblueclass.cs.

Silverthemeclass.cs :

public class SilverThemeClass:Theme
    {
         private static Uri ThemeResourceUri = new Uri("/CustomThemesinSilverlight;component/Theme1.xaml", UriKind.Relative);

         public SilverThemeClass()
            : base(ThemeResourceUri)
        {

        }
        public static bool GetIsApplicationTheme(Application app)
        {
            return GetApplicationThemeUri(app) == ThemeResourceUri;
        }

        public static void SetIsApplicationTheme(Application app, bool value)
        {
            SetApplicationThemeUri(app, ThemeResourceUri);
        }

AliceBlueclass.cs :

public class AliceThemesClass:Theme
    {
        private static Uri ThemeResourceUri = new Uri("/CustomThemesinSilverlight;component/Themes.xaml", UriKind.Relative);

        public AliceThemesClass()
            : base(ThemeResourceUri)
        {

        }
        public static bool GetIsApplicationTheme(Application app)
        {
            return GetApplicationThemeUri(app) == ThemeResourceUri;
        }

        public static void SetIsApplicationTheme(Application app, bool value)
        {
            SetApplicationThemeUri(app, ThemeResourceUri);
        }

    }

Step 4: Now our silverligthclasslibrary is ready,Bulid the application and add reference in silverlight application.

Here we have class named themchanedcommand.cs where we get themes.

public class ThemeChangeCommand : ICommand
    {
         #region ICommand Members
 
        public bool CanExecute(object parameter)
        {
            return true;
        }

        public event EventHandler CanExecuteChanged;

        public void Execute(object parameter)
        {
            Theme themeContainer = (Theme)((FrameworkElement)Application.Current.RootVisual).FindName("ThemeContainer");

            string themeName = parameter as string;

            if (themeName == null)
            {
                themeContainer.ThemeUri = null;
            }
            else
            {
                themeContainer.ThemeUri = new Uri("/CustomThemesinSilverlight;component/" + themeName , UriKind.RelativeOrAbsolute);
            }

            if (CanExecuteChanged != null)
                CanExecuteChanged(this, new EventArgs());
        }

        #endregion

    }

Step 5: Use created themes in MainPage.xaml .

<Grid x:Name="LayoutRoot" >

        <Grid.Resources>
             <local:ThemeChangeCommand x:Key="themeCommand" />
         </Grid.Resources>

       <toolkit:Theme x:Name="ThemeContainer" >

        <Grid Height="400" HorizontalAlignment="Left" Name="grid1" VerticalAlignment="Top" Width="800" Grid.Row="0" >
                 <Grid.RowDefinitions>
                     <RowDefinition Height="36" />
                     <RowDefinition Height="212*" />
                     <RowDefinition Height="*" />
                 </Grid.RowDefinitions>
                 <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="284" />
                 <ColumnDefinition Width="*" />
             </Grid.ColumnDefinitions>
                 <Border  Grid.Row="1" Height="200" HorizontalAlignment="Left" Name="border1" VerticalAlignment="Top" Width="280">
                     <CheckBox Content="ThemesInSilverlight" Height="16" Name="checkBox1" Width="130"  VerticalAlignment="Top" HorizontalAlignment="Left"/>
                  </Border>
                 <Button Height="30" Width="166" Content="BlueTheme" VerticalAlignment="Center" x:Name="BlueButton" Command="{StaticResource themeCommand}" CommandParameter="Themes.xaml" Margin="20,0" Click="BlueButton_Click"></Button>
                <Button Height="30" Width="166" HorizontalAlignment="Left" Content="SilverTheme" VerticalAlignment="Center"  Grid.Column="1" x:Name="SilverBtn"  Command="{StaticResource themeCommand}" CommandParameter="Theme1.xaml" Margin="14,0"></Button>
                 <StackPanel Grid.Column="1" Grid.Row="1" Height="242" HorizontalAlignment="Left" Name="stackPanel1" VerticalAlignment="Top" Width="425" >
                     <HyperlinkButton Height="20" Width="100" Content="Select Themes"></HyperlinkButton>
                     <Border Height="53"  x:Name="MyBorder" BorderThickness="5"></Border>
                     <ProgressBar Height="80" Name="progressBar1" Width="80" Margin="0,50,0,0" />
                 </StackPanel>

            </Grid>
         </toolkit:Theme>

    </Grid>

Output look like as below,

custom themes in silverlight

Summary : We can create custom themes in silverlight.
 


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