Windows Tile Updater (Part 6 – Binding a command parameter)

We’re still missing functionality to show the text, or show the text and an image where both are specified.

Add text

Let’s start with the text field. It’s currently just hard coded – that’s pretty straightforward:

        <StackPanel Orientation="Horizontal" Margin="20" Grid.Row="1">
            <TextBlock FontSize="30" Margin="10">Text</TextBlock>
            <TextBox Text="{Binding DisplayText, Mode=TwoWay}" Margin="10"/>
        </StackPanel>

Next, let’s hook this up to the command.

<Button Grid.Row="2" Command="{Binding UpdateCommand}" CommandParameter="{Binding DisplayText}">Update</Button>

So that works, and the logic to show the text tile is quite straightforward:

        public static void UpdateTileText(string text)
        {
            XmlDocument xmlDoc = TileUpdateManager.GetTemplateContent(TileTemplateType.TileWide310x150Text01);

            XmlElement textNode = (XmlElement)xmlDoc.GetElementsByTagName("text")[0];
            textNode.InnerText = text;

            Windows.UI.Notifications.TileUpdater tileUpdater = TileUpdateManager.CreateTileUpdaterForApplication();
            TileNotification tileNotification = new TileNotification(xmlDoc);
            tileUpdater.Update(tileNotification);
        }

So, we can call this, or we can call the UpdateImage. At the moment, we can’t call both. In the next post I’ll look at how we can do this using Multibinding.

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