topic Re: Change Map at runtime in ArcGIS API for Silverlight Questions

Change Map at runtime

xariaD — Thu, 12 Aug 2010 01:52:18 GMT

I have to change the entire map upon some event.
Eg If checkbox 1 is checked load map1; when checkbox2 is checked load map2.
But I want to have the same events on feature layer of both maps, and same Maptips.
I think converting the MapTip to user control will be a good idea, but how do I change the map?

Both maps essentially have same attributes.

Re: Change Map at runtime

JenniferNery — Thu, 12 Aug 2010 04:52:54 GMT

You can create two maps with layer events using the same event handlers in code and add/remove to your grid based on the CheckBox IsChecked property. Or you can define your maps in XAML and then bind each map's Visibility property to the CheckBox IsChecked, at which case you will need to write your own Converter.

Jennifer

Re: Change Map at runtime

xariaD — Thu, 12 Aug 2010 05:35:34 GMT

Or you can define your maps in XAML and then bind each map's Visibility property to the CheckBox IsChecked, at which case you will need to write your own Converter.

Jennifer

What kind of converter, and for what? Could you please elaborate.
Thanks

Re: Change Map at runtime

xariaD — Thu, 12 Aug 2010 05:39:51 GMT

Is it possible to change the Dynamic layer and feature layer only?

If I define two maps then they'll have different "Name" and my code will be in mess.
Can I not just change the url for ArcGISDynamic Layer and Feature Layer???

Re: Change Map at runtime

JenniferNery — Thu, 12 Aug 2010 05:47:34 GMT

Sure you can add/remove layer from your Map layers in code-behind, that will work too with minimal effort.

If you will change visibility using CheckBox. You will have something like this:

Visibility="{Binding IsChecked, ElementName=checkBox, Converter={StaticResource BooleanToVisibilityConverter}}"

public class BooleanToVisibilityConverter : IValueConverter {

    public Object Convert(Object value, Type targetType, Object parameter, CultureInfo culture) {
      if (targetType == typeof(Visibility) && value !=null) {
        var visible = System.Convert.ToBoolean(value, culture);
        return visible ? Visibility.Visible : Visibility.Collapsed;
      }
      throw new InvalidOperationException("Converter can only convert to value of type Visibility.");
    }

    public Object ConvertBack(Object value, Type targetType, Object parameter, CultureInfo culture) {
      throw new InvalidOperationException("Converter cannot convert back.");
    }
}

Jennifer

Re: Change Map at runtime

xariaD — Thu, 12 Aug 2010 06:49:29 GMT

I cannot see the map after I add the layers until i click on the Full extent button on the navigation.
😞

Re: Change Map at runtime

JenniferNery — Thu, 12 Aug 2010 14:25:57 GMT

Which approach did you use? You can check that all layers have initialized. If you are creating the layers in code, be sure to call layer.Initialize(), subscribe to Initialized event too.

Jennifer

Re: Change Map at runtime

xariaD — Fri, 13 Aug 2010 04:46:12 GMT

Well, Finally I had to resort to defining two maps and hiding one .
No issues now.
Thanks for your help.

Re: Change Map at runtime

deleted-user-ATjHIWsdQYmT — Mon, 31 Jan 2011 14:17:32 GMT

Jennifer,

What do I have to add to my XAML in order to expose the converter class as a static resource?