topic Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services in ArcGIS API for Silverlight Questions

Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Tue, 08 Mar 2011 20:22:55 GMT

I am using silverlight 2.1 API, Visual Studio 2010, ArcGIS 10.0 SP1 and my legend control will not refresh. The Service can be turned on and off, but not the sub layers. If I switch over to my 10 Services on my Production Server, it works. Has anyone else had this problem?

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Wed, 09 Mar 2011 08:09:13 GMT

Is your service cached?

If cached, it's not possible to change the sublayer visibilities (since the exported images are generated from the cache).

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Wed, 09 Mar 2011 12:49:32 GMT

No, the services are not cached. There is no difference in the service configuration between the services running with ArcGIS Server 10 and ArcGIS Server 10SP1. The legend works with the 10 services but not the 10SP1 Services.

Thanks for your help. I am stumped on this one, I have tried all the obviouse things.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Wed, 09 Mar 2011 13:33:37 GMT

I perhaps misunderstood your issue.

Do you mean that you don't get any legend infos (no sublayers, no swatches) for your 10SP1 service?

If it's the case, could you test your legend rest end point? (something like : http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Median_Age/MapServer/legend)

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Wed, 09 Mar 2011 17:02:05 GMT

No, I get sub layers and swatches, what does not work is the check boxes to turn the layers on and off.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Wed, 09 Mar 2011 17:10:52 GMT

Could you share the result of this kind of request on your service : http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Median_Age/MapServer?f=pjson ?
(or share just the URL if your service is public).

Also check that your REST end point is able to manage sublayer visibilities:
- make a request on your map server (like http://services.arcgisonline.com/ArcGIS/rest/services/Demographics/USA_Median_Age/MapServer)
- click ExportMap
- test with various Layers (such as 1 or 2 or 3...) and check that the sublayer visibilities are taken into account

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Thu, 10 Mar 2011 14:49:57 GMT

AAhh, yes, I see that sublayers are null. Why would htat be and how to creect it?

Thanks! Here is my URL

http://buster/ArcGIS/rest/services/theMAPex/theMAPexOCP/MapServer?f=pjson

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Thu, 10 Mar 2011 15:12:36 GMT

I can't access 'buster'. Please share the result of the request.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Thu, 10 Mar 2011 16:02:43 GMT

this is what I get:

{
"currentVersion" : 10.01,
"serviceDescription" : "",
"mapName" : "Layers",
"description" : "",
"copyrightText" : "",
"layers" : [
    {
      "id" : 0,
      "name" : "Address Labels",
      "parentLayerId" : -1,
      "defaultVisibility" : false,
      "subLayerIds" : null,
      "minScale" : 24000,
      "maxScale" : 0
    },
    {
      "id" : 1,
      "name" : "Address Points",
      "parentLayerId" : -1,
      "defaultVisibility" : false,
      "subLayerIds" : null,
      "minScale" : 24000,
      "maxScale" : 0
    },
    {
      "id" : 2,
      "name" : "Main Highways",
      "parentLayerId" : -1,
      "defaultVisibility" : true,
      "subLayerIds" : null,
      "minScale" : 499999,
      "maxScale" : 0
    },
    {
      "id" : 3,
      "name" : "Roads",
      "parentLayerId" : -1,
      "defaultVisibility" : true,
      "subLayerIds" : null,
      "minScale" : 250000,
      "maxScale" : 0
    }
],
"tables" : [

],
"spatialReference" : {
    "wkt" : "PROJCS[\"NAD_1983_Albers\",GEOGCS[\"GCS_North_American_1983\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Albers\"],PARAMETER[\"False_Easting\",1000000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-126.0],PARAMETER[\"Standard_Parallel_1\",50.0],PARAMETER[\"Standard_Parallel_2\",58.5],PARAMETER[\"Latitude_Of_Origin\",45.0],UNIT[\"Meter\",1.0]]"
},
"singleFusedMapCache" : false,
"initialExtent" : {
    "xmin" : 1019955.64170795,
    "ymin" : 742772.396613911,
    "xmax" : 1612458.69674248,
    "ymax" : 1269733.07830392,
    "spatialReference" : {
      "wkt" : "PROJCS[\"NAD_1983_Albers\",GEOGCS[\"GCS_North_American_1983\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Albers\"],PARAMETER[\"False_Easting\",1000000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-126.0],PARAMETER[\"Standard_Parallel_1\",50.0],PARAMETER[\"Standard_Parallel_2\",58.5],PARAMETER[\"Latitude_Of_Origin\",45.0],UNIT[\"Meter\",1.0]]"
    }
},
"fullExtent" : {
    "xmin" : 1019955.64170795,
    "ymin" : 791474.377414865,
    "xmax" : 1612458.69674248,
    "ymax" : 1255113.13164212,
    "spatialReference" : {
      "wkt" : "PROJCS[\"NAD_1983_Albers\",GEOGCS[\"GCS_North_American_1983\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Albers\"],PARAMETER[\"False_Easting\",1000000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-126.0],PARAMETER[\"Standard_Parallel_1\",50.0],PARAMETER[\"Standard_Parallel_2\",58.5],PARAMETER[\"Latitude_Of_Origin\",45.0],UNIT[\"Meter\",1.0]]"
    }
},
"units" : "esriMeters",
"supportedImageFormatTypes" : "PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP",
"documentInfo" : {
    "Title" : "fc",
    "Author" : "CMckee",
    "Comments" : "",
    "Subject" : "",
    "Category" : "",
    "Keywords" : "",
    "AntialiasingMode" : "None",
    "TextAntialiasingMode" : "Force"
},
"capabilities" : "Map,Query,Data"
}

Thanks so much for your help.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Sat, 11 Dec 2021 06:14:47 GMT

The only thing I noticed is that lot of your layers have relatively low MinScale (24000).

If you are using the legend template of the interactive SDK:

 
 
 <CheckBox Content="{Binding Label}"
                  IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                  IsEnabled="{Binding IsInScaleRange}" >
                            </CheckBox>

you will notice that the checbox is not enabled while the map is not in the scale range of the layer, i.e. in your case, you need to zoom in a lot.

Not sure it's your issue, but it's worth the try to test after removing that 'IsEnabled="{Binding IsInScaleRange}" '

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Thu, 10 Mar 2011 19:33:51 GMT

Your suggestion did not net any results, however it did give me some ideas to try. If I remove the max and min scales, the legend works correctly. This of course is not an acceptable solution. Has something changed regarding scale dependancy in services between 10 and 10.01?

Also, sorry, the URL I gave you was not correct, here is the correct one:

http://buster.rdffg.bc.ca/ArcGIS/rest/services/theMAPex/theMAPexAddresses/MapServer

I appreciate your attention to this.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Thu, 10 Mar 2011 21:32:04 GMT

What is your exactly the issue.
Is it that you are not enable to change the status of the visibility checkbox (i.e it's still checked or unchecked but you can't change).

Or is it that you can change the status but you see the sublayer even if the checkbox is not checked?

Side note : your map service seems to have some reversed minscale and maxscale (layers 2 and 3) but I guess it's due to your tests since there was not this issue in the first version you sent.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

SloaneWalker — Fri, 11 Mar 2011 14:01:41 GMT

This is my issue.

Is it that you are not enable to change the status of the visibility checkbox (i.e it's still checked or unchecked but you can't change). Yes, that is what is happening.

When the layers load, the checkboxes indicate the current status, but they do not change when the map is zoomed or when the checkboxes are checked.

Thank you

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

DominiqueBroux — Sat, 11 Dec 2021 06:14:49 GMT

The only explanation I can figure out is that the checkbox is not enabled as long as the layer is not visible at the scale.

It means that you are binding the IsEnabled property with something like:

 
<CheckBox Content="{Binding Label}"
                  IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                  IsEnabled="{Binding IsInScaleRange}" >
                            </CheckBox>

but this should work by removing the binding to IsInScaleRange:

 
<CheckBox Content="{Binding Label}"
                  IsChecked="{Binding IsEnabled, Mode=TwoWay}"
                             </CheckBox>

Could you test again?

Note : you can also test by setting a low value for the MinimumResolution of your map, so you will be able to zoom in to a large scale and the checkboxes shoud become available.

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

BrandonCales — Sat, 11 Dec 2021 06:14:52 GMT

The code below is what i am using, however it appears that the MinimumResolution is not being pulled from my map service...so the IsInScaleRange isn't working.

<esri:Legend.LayerTemplate>
                                <DataTemplate>
                                    <StackPanel Orientation="Horizontal">
                                        <ToolTipService.ToolTip>
                                            <StackPanel MaxWidth="400">
                                                <TextBlock FontWeight="Bold" Text="{Binding Layer.ID}" TextWrapping="Wrap" />
                                                <TextBlock FontWeight="Bold" Text="{Binding Label}" TextWrapping="Wrap" />
                                                <TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
                                                <TextBlock Text="{Binding SubLayerID, StringFormat='SubLayer ID : {0}'}" />
                                                <TextBlock Text="{Binding MinimumResolution, StringFormat='Minimum Resolution : {0:F6}'}" />
                                                <TextBlock Text="{Binding MaximumResolution, StringFormat='Maximum Resolution : {0:F6}'}" />
                                            </StackPanel>
                                        </ToolTipService.ToolTip>
                                        
                                        <CheckBox IsChecked="{Binding IsEnabled, Mode=TwoWay}" IsEnabled="{Binding IsInScaleRange}" />
                                        <TextBlock Text=":::" VerticalAlignment="Center"/>
                                        <TextBlock Text="{Binding Label}" VerticalAlignment="Center"/>
                                    </StackPanel>
                                </DataTemplate>
                            </esri:Legend.LayerTemplate>

Re: Silverlight 2.1 API legend control does not refresh with 10SP1 Services

BrandonCales — Sat, 11 Dec 2021 06:14:55 GMT

Fixed my issue once SP2 was installed - apparently this was resolved with SP1

The code below is what i am using, however it appears that the MinimumResolution is not being pulled from my map service...so the IsInScaleRange isn't working.

<esri:Legend.LayerTemplate>
                                <DataTemplate>
                                    <StackPanel Orientation="Horizontal">
                                        <ToolTipService.ToolTip>
                                            <StackPanel MaxWidth="400">
                                                <TextBlock FontWeight="Bold" Text="{Binding Layer.ID}" TextWrapping="Wrap" />
                                                <TextBlock FontWeight="Bold" Text="{Binding Label}" TextWrapping="Wrap" />
                                                <TextBlock Text="{Binding Description}" TextWrapping="Wrap" />
                                                <TextBlock Text="{Binding SubLayerID, StringFormat='SubLayer ID : {0}'}" />
                                                <TextBlock Text="{Binding MinimumResolution, StringFormat='Minimum Resolution : {0:F6}'}" />
                                                <TextBlock Text="{Binding MaximumResolution, StringFormat='Maximum Resolution : {0:F6}'}" />
                                            </StackPanel>
                                        </ToolTipService.ToolTip>
                                        
                                        <CheckBox IsChecked="{Binding IsEnabled, Mode=TwoWay}" IsEnabled="{Binding IsInScaleRange}" />
                                        <TextBlock Text=":::" VerticalAlignment="Center"/>
                                        <TextBlock Text="{Binding Label}" VerticalAlignment="Center"/>
                                    </StackPanel>
                                </DataTemplate>
                            </esri:Legend.LayerTemplate>