topic Re: Feature layer publish, Display in WPF app in ArcGIS API for Silverlight Questions

Feature layer publish, Display in WPF app

xariaD — Mon, 14 Jun 2010 05:55:18 GMT

We have a feature layer, which we intend to publish using ArcGIS Server.
We have a WPF application which displays maps. This feature layer is to be overlayed upon the map.
The feature layers represents certain units installed at particular locations. We have the co-ordinates of these units.

The units have different state eg Enabled/disabled. We wish to represent the enabled units with different icon and disabled with different icon. Obviously the state is obtained dynamically. How to achieve this?
Also, Upon clicking these units on the map some function should be performed.
How do we determine which unit has been clicked?

Re: Feature layer publish, Display in WPF app

DominiqueBroux — Mon, 14 Jun 2010 13:01:36 GMT

At first it looks like a renderer question.
An 'UniqueValueRenderer' which allows to change the symbol depending on the value of a field should be what you are looking for.

Also, Upon clicking these units on the map some function should be performed.
How do we determine which unit has been clicked?

MouseLeftButtonDown event on a feature layer is called with a GraphicMouseButtonEventArgs which is giving the clicked graphic/feature.

Re: Feature layer publish, Display in WPF app

xariaD — Mon, 14 Jun 2010 13:22:56 GMT

Thank you so much, I am not a GIS Developer and this is my first encounter with ESRI and WPF.

I know this is not the right forum but since we are at it, I have converted a CAD file to ARCMap layers.
This map has 2 layers, polyline and polygon, from CAD file.
Now I selected the units in question and converted the selection to a new layer. Presently the units are represented as circle. How do I replace this with some symbol?

Re: Feature layer publish, Display in WPF app

DominiqueBroux — Mon, 14 Jun 2010 13:51:11 GMT

You can either change the symbology in ArcMap (so this symbology will become the default symbology for your published service), or change the symbology on the client side by using the renderer classes of the silverlight API.

To change the symbology in ArcMap :
- right click on the layer
- select 'Properties'
- go to 'Symbology' tab
- define the symbology you need.

To redefine the symbology on the client side, here is a sample http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#FeatureLayerRendering

Re: Feature layer publish, Display in WPF app

xariaD — Tue, 15 Jun 2010 03:12:28 GMT

I have added two layers to my map.
ArcGISDynamicMapServiceLayer and Featurelayer.
But the feature layer is not displayed. 😞

However, if I create a Web application using the ArcGIS Server then both the layers are displayed.

Also, The Feature layer MouseLeftButtonDown is created with MouseButonEventArgs
private void Feature_MouseLeftButtonDown(object sender, Graphic graphic, MouseButtonEventArgs args)
{
}

Re: Feature layer publish, Display in WPF app

dotMorten_esri — Tue, 15 Jun 2010 15:34:07 GMT

I'm guessing you are still using v1.2?

Re: Feature layer publish, Display in WPF app

xariaD — Wed, 16 Jun 2010 00:53:32 GMT

Yeah, we are using 1.2. How to proceed in that case?

Re: Feature layer publish, Display in WPF app

DominiqueBroux — Wed, 16 Jun 2010 09:22:09 GMT

1) First option : migrate to 2.0 🙂

2) With 1.2, the symbology defined on the server side is not used by the silverlight API (so 'Change the symbology in ArcMap' is no longer an option).
You have to define the symbology on the client side. Here is a sample : http://resources.esri.com/help/9.3/arcgisserver/apis/silverlight/samples/start.htm#FeatureLayerRendering

That being said, this doesn't explain why your feature layer is not displayed.
Perhaps comparing your code with the sample will give some clue.

Re: Feature layer publish, Display in WPF app

xariaD — Thu, 17 Jun 2010 09:05:39 GMT

But does 2.0 support VS 2008? I see the minimum install is VS 2010 and I m using WPF not silverlight.
We are using Expression Blend 3 .
So I don't think upgrading to 2.0 is possible at this time.
I have checked with the sample and my code and it is similar I cannot figure out why the features layer is not rendered. 😞

Where is the code for web application created by ArcGIS server stored. Maybe I can compare those two codes.
😞

I really need to get this working.

Re: Feature layer publish, Display in WPF app

DominiqueBroux — Thu, 17 Jun 2010 10:08:05 GMT

But does 2.0 support VS 2008? I see the minimum install is VS 2010 and I m using WPF not silverlight.
We are using Expression Blend 3 .
So I don't think upgrading to 2.0 is possible at this time.

You are right.

I have checked with the sample and my code and it is similar I cannot figure out why the features layer is not rendered.

First, you have to figure out if the issue is coming from the server or from the client.
Try to request your service directly from your browser.
A request like http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0?j=pjson must return the layer information.
A request like http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Specialty/ESRI_StatesCitiesRivers_USA/MapServer/0/query?text=&geometry=&geometryType=esriGeometryEnvelope&inSR=&spatialRel=esriSpatialRelIntersects&where=1%3D1&returnGeometry=true&outSR=&outFields=*&f=pjson must return a list of features.

If it's working well at the server level, there is probably an issue in your client code.
- verify the symbology you gave to your layer
- use fiddler (or firebug) to analyze the requests send to the server

Re: Feature layer publish, Display in WPF app

dotMorten_esri — Thu, 17 Jun 2010 15:22:53 GMT

But does 2.0 support VS 2008? I see the minimum install is VS 2010 and I m using WPF not silverlight.
We are using Expression Blend 3 .

VS2010 is only required for the Silverlight portion. You can continue to use VS2008 if you are doing WPF.

Re: Feature layer publish, Display in WPF app

xariaD — Mon, 21 Jun 2010 04:32:47 GMT

This is what I get from Feature layer http://.........MapServer/0?j=pjson

Layer: Labels (ID: 0)
Sub Layers:

    * S_PR-TOWER
    * S_Grid1
    * S_TWY1-CtrLine-Txt
    * RW2
    * S_Bline
    * TITLE_BLOCK
    * GATENAME

Display Field: TextString

Type: Annotation Layer

Geometry Type: esriGeometryPolygon

Description:

Definition Expression:

Copyright Text:

Min. Scale: 0

Max. Scale: 0

Extent:

      XMin: 6213.22240586483
      YMin: -4580.88478070292
      XMax: 7108.20544900603
      YMax: -373.866660260542
      Spatial Reference:

Fields:

    * OBJECTID (Type: esriFieldTypeOID, Alias: OBJECTID)
    * SHAPE (Type: esriFieldTypeGeometry, Alias: SHAPE)
    * FeatureID (Type: esriFieldTypeInteger, Alias: FeatureID)
    * ZOrder (Type: esriFieldTypeInteger, Alias: ZOrder)
    * AnnotationClassID (Type: esriFieldTypeInteger, Alias: AnnotationClassID)
    * Element (Type: esriFieldTypeBlob, Alias: Element)
    * SymbolID (Type: esriFieldTypeInteger, Alias: SymbolID)
    * Status (Type: esriFieldTypeSmallInteger, Alias: Status)
    * TextString (Type: esriFieldTypeString, Alias: TextString)
    * FontName (Type: esriFieldTypeString, Alias: FontName)
    * FontSize (Type: esriFieldTypeDouble, Alias: FontSize)
    * Bold (Type: esriFieldTypeSmallInteger, Alias: Bold)
    * Italic (Type: esriFieldTypeSmallInteger, Alias: Italic)
    * Underline (Type: esriFieldTypeSmallInteger, Alias: Underline)
    * VerticalAlignment (Type: esriFieldTypeSmallInteger, Alias: VerticalAlignment)
    * HorizontalAlignment (Type: esriFieldTypeSmallInteger, Alias: HorizontalAlignment)
    * XOffset (Type: esriFieldTypeDouble, Alias: XOffset)
    * YOffset (Type: esriFieldTypeDouble, Alias: YOffset)
    * Angle (Type: esriFieldTypeDouble, Alias: Angle)
    * FontLeading (Type: esriFieldTypeDouble, Alias: FontLeading)
    * WordSpacing (Type: esriFieldTypeDouble, Alias: WordSpacing)
    * CharacterWidth (Type: esriFieldTypeDouble, Alias: CharacterWidth)
    * CharacterSpacing (Type: esriFieldTypeDouble, Alias: CharacterSpacing)
    * FlipAngle (Type: esriFieldTypeDouble, Alias: FlipAngle)
    * Override (Type: esriFieldTypeInteger, Alias: Override)
    * Entity (Type: esriFieldTypeString, Alias: Entity)
    * Handle (Type: esriFieldTypeString, Alias: Handle)
    * Owner (Type: esriFieldTypeString, Alias: Owner)
    * Layer (Type: esriFieldTypeString, Alias: Layer)
    * LyrFrzn (Type: esriFieldTypeSmallInteger, Alias: LyrFrzn)
    * LyrLock (Type: esriFieldTypeSmallInteger, Alias: LyrLock)
    * LyrOn (Type: esriFieldTypeSmallInteger, Alias: LyrOn)
    * LyrVPFrzn (Type: esriFieldTypeSmallInteger, Alias: LyrVPFrzn)
    * LyrHandle (Type: esriFieldTypeString, Alias: LyrHandle)
    * Color (Type: esriFieldTypeSmallInteger, Alias: Color)
    * EntColor (Type: esriFieldTypeSmallInteger, Alias: EntColor)
    * LyrColor (Type: esriFieldTypeSmallInteger, Alias: LyrColor)
    * BlkColor (Type: esriFieldTypeSmallInteger, Alias: BlkColor)
    * Linetype (Type: esriFieldTypeString, Alias: Linetype)
    * EntLinetype (Type: esriFieldTypeString, Alias: EntLinetype)
    * LyrLnType (Type: esriFieldTypeString, Alias: LyrLnType)
    * BlkLinetype (Type: esriFieldTypeString, Alias: BlkLinetype)
    * Elevation (Type: esriFieldTypeDouble, Alias: Elevation)
    * Thickness (Type: esriFieldTypeDouble, Alias: Thickness)
    * LineWt (Type: esriFieldTypeSmallInteger, Alias: LineWt)
    * EntLineWt (Type: esriFieldTypeSmallInteger, Alias: EntLineWt)
    * LyrLineWt (Type: esriFieldTypeSmallInteger, Alias: LyrLineWt)
    * BlkLineWt (Type: esriFieldTypeSmallInteger, Alias: BlkLineWt)
    * RefName (Type: esriFieldTypeString, Alias: RefName)
    * LTScale (Type: esriFieldTypeDouble, Alias: LTScale)
    * ExtX (Type: esriFieldTypeDouble, Alias: ExtX)
    * ExtY (Type: esriFieldTypeDouble, Alias: ExtY)
    * ExtZ (Type: esriFieldTypeDouble, Alias: ExtZ)
    * DocName (Type: esriFieldTypeString, Alias: DocName)
    * DocPath (Type: esriFieldTypeString, Alias: DocPath)
    * DocType (Type: esriFieldTypeString, Alias: DocType)
    * DocVer (Type: esriFieldTypeString, Alias: DocVer)
    * ScaleX (Type: esriFieldTypeDouble, Alias: ScaleX)
    * ScaleY (Type: esriFieldTypeDouble, Alias: ScaleY)
    * ScaleZ (Type: esriFieldTypeDouble, Alias: ScaleZ)
    * Style (Type: esriFieldTypeString, Alias: Style)
    * FontID (Type: esriFieldTypeSmallInteger, Alias: FontID)
    * Text (Type: esriFieldTypeString, Alias: Text)
    * Height (Type: esriFieldTypeDouble, Alias: Height)
    * TxtAngle (Type: esriFieldTypeDouble, Alias: TxtAngle)
    * TxtWidth (Type: esriFieldTypeDouble, Alias: TxtWidth)
    * TxtOblique (Type: esriFieldTypeDouble, Alias: TxtOblique)
    * TxtGenType (Type: esriFieldTypeString, Alias: TxtGenType)
    * TxtJust (Type: esriFieldTypeString, Alias: TxtJust)
    * VertAlign (Type: esriFieldTypeString, Alias: VertAlign)
    * TxtFont (Type: esriFieldTypeString, Alias: TxtFont)
    * TxtBoxHt (Type: esriFieldTypeDouble, Alias: TxtBoxHt)
    * TxtBoxWd (Type: esriFieldTypeDouble, Alias: TxtBoxWd)
    * TxtRefWd (Type: esriFieldTypeDouble, Alias: TxtRefWd)
    * TxtAttach (Type: esriFieldTypeSmallInteger, Alias: TxtAttach)
    * TxtDir (Type: esriFieldTypeSmallInteger, Alias: TxtDir)
    * LnSpace (Type: esriFieldTypeSmallInteger, Alias: LnSpace)
    * SpaceFct (Type: esriFieldTypeDouble, Alias: SpaceFct)
    * TxtMemo (Type: esriFieldTypeString, Alias: TxtMemo)
    * SHAPE_Length (Type: esriFieldTypeDouble, Alias: SHAPE_Length)
    * SHAPE_Area (Type: esriFieldTypeDouble, Alias: SHAPE_Area)

Supported Operations:   Query Layer

Re: Feature layer publish, Display in WPF app

xariaD — Wed, 23 Jun 2010 01:20:12 GMT

We have a map in AutoCAD.
For our application we do not need to display the city map. We just need to display the area of our concern.
Now we were able to convert the AutoCad to mxd.
But this AutoCad file has co-ordinates of its own and is not using Spatial reference or WKID.

We created another layer, from this mxd to display as feature layer for our WPF application.
Then we created a web application on the ArcGIS server and the layer displays, but it does not display on the wpf app.
I have upgraded the API to 2.0 still it will not display:(

Re: Feature layer publish, Display in WPF app

dotMorten_esri — Wed, 23 Jun 2010 16:57:25 GMT

You can display a layer without a spatial reference by itself. However, if you want to overlay it on another map, it must have a valid spatial reference associated with it, so the map knows how to reproject the data to match the basemap.

Re: Feature layer publish, Display in WPF app

xariaD — Fri, 25 Jun 2010 02:31:23 GMT

So then the feature layer is alright.

Below is the code for our map display:
<Grid x:Name="LayoutRoot" ShowGridLines="False">
        <Grid.Resources>
        <esriSymbols:SimpleMarkerSymbol x:Key="MyMarkerSymbol" x:Name="MyMarkerSymbol" Color="Green" Style="Diamond" Size="14" />
    </Grid.Resources>

<esri:Map x:Name="MyMap" Background="White" Grid.Row="0" Grid.Column="1" Grid.RowSpan="2"
                  Margin="15" Initialized="MyMap_Initialized" ExtentChanged="MyMap_ExtentChanged"
                  ZoomDuration="00:00:00" PanDuration="00:00:00"
                  Extent="6100,-3200,7189,-163" Loaded="MyMap_Loaded">

            <esri:Map.Layers>
                <esri:ArcGISDynamicMapServiceLayer x:Name="StreetMap" ID="Street"
                                              Url="http://10.1.3.127/ArcGIS/rest/services/mybasemap/MapServer" />
                <esri:FeatureLayer Visible="True" ID="myLocationLayer" x:Name="myLocation"
                                   Url="http://10.1.3.127/ArcGIS/rest/services/myFeaturelayer/MapServer/0"
                                   MouseLeftButtonDown="TowerLocation_MouseLeftButtonDown"
                                   FeatureSymbol="{StaticResource MyMarkerSymbol}"/>

            </esri:Map.Layers>
        </esri:Map>

Upon debugging I found out that Initialized has two layers: ArcGISDynamicMapServiceLayer and Featurelayer.
What is wrong? Why can't the app display the feature layer :((

Re: Feature layer publish, Display in WPF app

xariaD — Fri, 25 Jun 2010 07:07:25 GMT

Update:

Okay I am able to show the feature layer in my WPF app now.
But it is not displaying correctly.
My features are supposed to be horizontal but they are displaying vertically.
Also the labels(annotation) are not being displayed.

Re: Feature layer publish, Display in WPF app

DominiqueBroux — Fri, 25 Jun 2010 09:16:53 GMT

I noticed that the geometry of your feature layer was of type polygon :

Geometry Type: esriGeometryPolygon

and that you were using a marker symbol

FeatureSymbol="{StaticResource MyMarkerSymbol}"

You should use a fill symbol instead.

My features are supposed to be horizontal but they are displaying vertically.

Could you give more info about this issue?

Also the labels(annotation) are not being displayed.

I am not sure on how the annotation layers are managed with API 2.0. Need to wait for Morten's answer.

Re: Feature layer publish, Display in WPF app

xariaD — Sat, 26 Jun 2010 13:44:59 GMT

I noticed that the geometry of your feature layer was of type polygon :

and that you were using a marker symbol
You should use a fill symbol instead.

Yeah that is what I did and then I could see the features.

Re: Feature layer publish, Display in WPF app

xariaD — Mon, 28 Jun 2010 00:38:54 GMT

My features are supposed to be horizontal but they are displaying vertically.

Could you give more info about this issue?

I think North is not aligned with the DynamicMapLayer. Coz for the DynamicLayer North is pointing towards the right of the screen. but I believe for the feature layer North is towards the top of screen.

Re: Feature layer publish, Display in WPF app

xariaD — Tue, 29 Jun 2010 01:32:13 GMT

Please guide me what, where should I be looking at????
:confused: 😞