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SL4 Breaks ESRI Behaviors

PatrickBrooke

Hello all,

Unless it is just me, which i sincerely hope it is, SL4 breaks the Measure Action and Constrained Extent Behavior. I will attach my constrained extent behavior code, but it is the same as the ESRI sample, a pretty basic feature. The same code works just great in SL3. Strange Error. Measure Action is much the same. I realize the ESRI tools for SL are developed on SL3, but am hoping to push my new site out in the next week or 2 in SL4. Mainly upgrading for the print functionality. Worth it!

The error message:

"A value type of 'ConstrainExtentBehavior' cannot be added to a collection or dictionary of type 'BehaviorCollection'"

Code:

xmlns:esriBehaviors="clr-namespace:ESRI.ArcGIS.Client.Behaviors;assembly=ESRI.ArcGIS.Client.Behaviors"

<i:Interaction.Behaviors>
<esriBehaviors:ConstrainExtentBehavior ConstrainedExtent="-120,30,-60,60" />
</i:Interaction.Behaviors>

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Accepted answers

All comments

BrentStevener

This error happens when you don't have a reference to ESRI.ArcGIS.Client.Behaviors in your project. Add the reference and you should be able to add it without the error. [I had the same problem and fixed it earlier]

JenniferNery

It works for me. I tried the following where my map is in 102100 Spatial Reference.

 <esri:Map x:Name="MyMap" ExtentChanged="MyMap_ExtentChanged">
  <esri:ArcGISTiledMapServiceLayer Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer" />
   <i:Interaction.Behaviors>
    <esri:ConstrainExtentBehavior ConstrainedExtent="-4814883.48538718,-5216317.8461096,9656548.66851654,5273956.71733734" />
   </i:Interaction.Behaviors>
 </esri:Map>

The only thing I see in your code that may be the problem is:

<i:Interaction.Behaviors>
<esri:ConstrainExtentBehavior ConstrainedExtent="-9161000 4875000 -7532000 5779000"/>
</i:Interaction.Behaviors>

The Extent is not delimited by comma. This will lead to XamlParseException.

MatthewStarr

Hi Kevin,

What issues are you having with ShowCoordinatesBehavior?

I cannot seem to use

<i:Interaction.Behaviors>
<esri:ConstrainExtentBehavior ConstrainedExtent="-9161000 4875000 -7532000 5779000"/>
</i:Interaction.Behaviors>

... My base map is in web Mercator

KevinSesock

Jennifer:

None, at the moment, since I just realized my stupidity. Placed the code in the wrong spot (wasn't in esri:map).

Would be best for all of you to ignore my messages from here on out. 🙂

JenniferNery

Hi Kevin,

What issues are you having with ShowCoordinatesBehavior?

KevinSesock

Does anyone have a workaround for ShowCoordinatesBehavior? Or do we have any idea on a fix from ESRI on this in 2.1?

JenniferNery

It might be easier to use Expression Blend for this or you can also do this:

Add reference to the following assemblies:
ESRI.ArcGIS.Client.Behaviors.dll
System.Windows.Interactivity

Having the following XAML namespace definitions:
xmlns:esri="http://schemas.esri.com/arcgis/client/2009"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
should be sufficient.

This will allow you to
    <i:Interaction.Behaviors>
          <esri:ConstrainExtentBehavior ConstrainedExtent="-120,30,-60,60" />
    </i:Interaction.Behaviors>

Jennifer

KevinSesock

Greetings all, sorry to dredge up an old thread. New to ArcGIS, Silverlight, et al, and having a bit of trouble.

When attempting to implement the above code, I'm getting a "type or namespace name 'Behavior' does not exist in the namespace 'ESRI.ArcGIS.Client' (are you missing an assembly reference?)" Since I'm new to the API, I'm finding that most information and documentation applies to the 1.x version and not to 2.0, but I can't find anywhere to reference the Behavior namespace. Are you guys utilizing the old version of the API, or should this be pulling from http://schemas.esri.com/arcgis/client/2009?

Thanks for the help, and my apologies for the stupid question.

hcgis

hi patrickbrooke
Did you find any workaround for the slow loading for the featurelayer discussed in this thread http://forums.esri.com/Thread.asp?c=158&f=2455&t=302251&mc=12#952400

thanks

hcgis

in your MainPage.xaml you insert the usercontol loaded event like this

<UserControl x:Class="yourprojectname.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
.............
   Loaded="UserControl_Loaded"
..............

>

and in the codebehind MainPage.xaml.cs you put :

private void UserControl_Loaded(object sender, RoutedEventArgs e)
        {
         System.Windows.Interactivity.Behavior behavior = new ESRI.ArcGIS.Client.Behaviors.ConstrainExtentBehavior()
             {
                  ConstrainedExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(-120,30,-60,60)
             };
          System.Windows.Interactivity.Interaction.GetBehaviors(Map).Add(behavior);

        }
i hope that helps you

KandaceKochivar

hi patrickbrooke
I had the same problem as yours and i implemented it with code (insert this snippet in loaded event) and it works (I don't know why???)

System.Windows.Interactivity.Behavior behavior = new ESRI.ArcGIS.Client.Behaviors.ConstrainExtentBehavior()
            {
            ConstrainedExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(-120,30,-60,60)
            };
System.Windows.Interactivity.Interaction.GetBehaviors(Map).Add(behavior);

Hi! I'm just starting out with Silverlight (and chose to learn on SL 4...) and encountered this same error. Could you please explicitly tell me where to place this coded workaround? i.e. Does it go in the vb/c# code behind page for MainPage.xaml or in MainPage.xaml or elsewhere? Where should I put it in the code structure?

Thanks in advance!

PatrickBrooke

Thanks hc,

I was working towards a workaounds just like that. Works perfectly, thanks for posting that.

hcgis

hi patrickbrooke
I had the same problem as yours and i implemented it with code (insert this snippet in loaded event) and it works (I don't know why???)

System.Windows.Interactivity.Behavior behavior = new ESRI.ArcGIS.Client.Behaviors.ConstrainExtentBehavior()
            {
            ConstrainedExtent = new ESRI.ArcGIS.Client.Geometry.Envelope(-120,30,-60,60)
            };
System.Windows.Interactivity.Interaction.GetBehaviors(Map).Add(behavior);

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