Lets add a button:
<Button x:Name=”btMode” Content=”Mode” Margin=”1,1,0,5″ Click=”btMode_Click” />
To do this we first need to make some changes to the xaml. Here’s the code:
<Grid Margin=”0,0,0,0″ Background=”#FF43B08B”>
<Grid.RowDefinitions>
<RowDefinition Height=”24*”/>
<RowDefinition Height=”395*”/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width=”62*”/>
<ColumnDefinition Width=”555*”/>
</Grid.ColumnDefinitions>
<Button x:Name=”btMode” Content=”Mode” Margin=”1,1,0,5″ Click=”btMode_Click” />
We now need the the code behind to make it work . First we are going to have to add a variable to let us know what state our map is currently in. So why don’t we just add this:
public partial class MainWindow : Window
{
public int MyMode = 0;
to the top MainWindow method. That will give us a variable to use to keep track of our current mode. Now in the click event we just created for the button. We will add the following code.
private void btMode_Click(object sender, RoutedEventArgs e)
{
if (MyMode == 0)
{
myMap.Mode = new AerialMode();
MyMode = 1;
}
else
{
myMap.Mode = new RoadMode();
MyMode = 0;
}
}
That will give us the ability to switch back and forth.
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