What actually does StringToLocationConverter ?

Question

Hi, I have tried the example given here, it doesn;t do anything. Just show (0,0) as coordinates. How can I get Map.Center ?

Answer 1

The StringToLocationConverter is a IValueConverter that can convert a Location object into a string. This makes it easy for you to binding a Location property to TextBoxes or other text based objects. You can bind to the Center of the map, the bounding box coordinates, the coordinates of a pushpin or just about any object that has a Location property.

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Answer 2

Can you please give me small example code ?

Answer 3

There was sample code in the link you provided, although it looks like the formatting is a bit messed up with the "strong" tags:

<Page
    x:Class="Application2.BlankPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Application2"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:bm="using:Bing.Maps"
    mc:Ignorable="d">

   <Page.Resources>
       <bm:StringToLocationConverter x:Key="LocationConverter"/>
   </Page.Resources>

    <Grid Background="{StaticResource ApplicationPageBackgroundBrush}">
        <StackPanel Margin="20">
           <TextBlock Text="{Binding ElementName=map, Path=Center, Mode=OneWay, Converter={StaticResource LocationConverter}}" Margin=”0 10 0 10” Width="250" Height="50"/>
           <bm:Map Width="800" Height="600" x:Name="map" Credentials="INSERT_YOUR_BING_MAPS_KEY"/>
        </StackPanel>
    </Grid>
</Page>

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Answer 4

I already checked that sample code and then added this code, I should get the lat long in textblock, but textblock doesn't get updated. I have Mode=TwoWay

void map_Tapped(object sender, TappedRoutedEventArgs e)
{
    var pos = e.GetPosition(map);
    Location location;
    map.TryPixelToLocation(pos, out location);
    map.Center = location;
    System.Diagnostics.Debug.WriteLine(myTextBlock.Text); // output is always "0.000000, 0.000000"
}        

Answer 5

What happens when you turn mode to OneWay? This may be a requirement.

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Answer 6

The Converter is not overly useful since the position properties are not data bindable.

Answer 7

Turning mode OneWay is not working. Still getting "0.000000, 0.000000"

Answer 8

See Kristoffers post. It looks like this is something used internally at the moment that is being made available in case someone needs it but there doesn't seem to be a good example of it. I'll pass this on to the documentation team.

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http://rbrundritt.wordpress.com

Answer 9

OK, thanks Richard :)