Pushpin in Bing Maps in Windows Phone 7

Introduction

In this article, we will discuss how to add a Pushpin in our Bing Maps and how we can change the image of the Pushpin Icon.

Step 1: First we should add the following references into our program.

using Microsoft.Phone.Controls.Maps;
using
System.Device.Location;

Step2: After that in the .xaml page we add this line in the <phone:PhoneApplicationPage> tag.

<phone:PhoneApplicationPage
    x:Class="WindowsPhoneApplication9.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:Microsoft.Phone.Controls.Maps;assembly=Microsoft.Phone.Controls.Maps">


It is used to declare the map.

Step 3: Now we add a Map with two Buttons (one is used to add the pin in the center of the map and the second is used to change the image of the pin).

<my:Map Height="427" HorizontalAlignment="Left" Margin="12,6,0,0" Name="map1" VerticalAlignment="Top" Width="438" />
           <Button Content="Add Center Pushpin" Height="72" HorizontalAlignment="Left" Margin="0,467,0,0" Name="button1"              VerticalAlignment="Top" Width="307" Click
="button1_Click" />
           <Button Content="Chage Pushpin Image" Height="72" HorizontalAlignment="Left" Margin="68,529,0,0" Name="button2" VerticalAlignment="Top" Width="302" Click="button2_Click" />

The Complete Grid Coding is:

<Grid x:Name="LayoutRoot" Background="Transparent">
         <Grid.RowDefinitions
>
            <RowDefinition Height
="Auto"/>
            <RowDefinition Height
="*"/>
         </Grid.RowDefinitions> 

        <!--TitlePanel contains the name of the application and page title-->

        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
            <TextBlock x:Name="ApplicationTitle" Text="MY APPLICATION" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="page name" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
       </StackPanel>

        <Grid x:Name="ContentPanel" Margin="12,160,12,1" Grid.RowSpan="2">
           <my:Map Height="427" HorizontalAlignment="Left" Margin="12,6,0,0" Name="map1" VerticalAlignment="Top" Width
="438" />
            <Button Content="Add Center Pushpin" Height="72" HorizontalAlignment="Left" Margin="0,467,0,0" Name="button1" VerticalAlignment="Top" Width="307" Click
="button1_Click" />
            <Button Content="Chage Pushpin Image" Height="72" HorizontalAlignment="Left" Margin="68,529,0,0" Name="button2" VerticalAlignment="Top" Width="302" Click
="button2_Click" />
            </Grid>
</Grid>

OUTPUT

img1.gif

Step 4: Now we start the code in the .cs page. First we write the code for Button1 (which is used to add the Center Pushpin).

First we create a GeoCoordiate like this:

private GeoCoordinate mapCenter;

After that we start the coding for Button1:

private void button1_Click(object sender, RoutedEventArgs e)
  {
      mapCenter = map1.Center;
       Pushpin mypin = new Pushpin();
        mypin.Location = mapCenter;
         map1.Children.Add(mypin);
  }

Here the following code is used to get the center of the current map:

mapCenter = map1.Center;

and the rest code is used to add the pin in the center of the map.

The ouput will be:

img2.gif

Step 5: Now we write the code for changing the image of the Pin:

For this first we add an ImageLayer into our program:

MapLayer imgLayer;
         // Constructor
   public MainPage()
   {
      InitializeComponent();
      imgLayer = new MapLayer();
      map1.Children.Add(imgLayer);
    }

Then we write the following code:

private void button2_Click(object sender, RoutedEventArgs e)
  {
      mapCenter = map1.Center;
     Image pinIMG = new Image();
     pinIMG.Source = new System.Windows.Media.Imaging.BitmapImage(new Uri("mypin.png",      UriKind.Relative));
     pinIMG.Height = 50;
     pinIMG.Width = 50;
     pinIMG.Stretch = System.Windows.Media.Stretch.None;
     PositionOrigin position = PositionOrigin.Center;
     imgLayer.AddChild(pinIMG, mapCenter, position);
  }

 The Output Will be:

img3.gif