topic Re: Some MapService Layers Query results won't display as graphics layers in ArcGIS API for Silverlight Questions

Some MapService Layers Query results won't display as graphics layers

MattMiley — Wed, 28 Mar 2012 11:15:27 GMT

I'm using the find example and when i query my storm map service everything works. WHen i query my water map services i get results in the datagrid but they won't show up as graphics layers when i select them.

Here is the returned Json for Storm (WORKING)

{   "results" : [     {       "layerId" : 0,        "layerName" : "GIS.GISADMIN.StormNodes",        "displayFieldName" : "NodeType",        "foundFieldName" : "OBJECTID",        "value" : "11",        "attributes" : {         "OBJECTID" : "11",          "Element_ID" : "0",          "SOURCE_DES" : "Sanitary Sewer Improvements Contract 10-S",          "Coordinate" : "648444.115, 2060333.176",          "Shape" : "Point"       },        "geometryType" : "esriGeometryPoint",        "geometry" :        {         "x" : -9146569.69071188,          "y" : 5078354.76733345,          "spatialReference" : {           "wkid" : 102100         }       }     },      {       "layerId" : 2,        "layerName" : "GIS.GISADMIN.OutFalls",        "displayFieldName" : "StreamName",        "foundFieldName" : "OBJECTID",        "value" : "11",        "attributes" : {         "OBJECTID" : "11",          "StreamName" : "Black River",          "OutFallName" : "Tacoma",          "Shape" : "Point",          "Type" : "Outfall",          "Name" : "Null",          "Notes" : "Null",          "Notes_1" : "Null",          "Oberservation_Date" : "Null",          "Oberserver" : "Null"       },        "geometryType" : "esriGeometryPoint",        "geometry" :        {         "x" : -9140394.26845358,          "y" : 5078269.86245744,          "spatialReference" : {           "wkid" : 102100         }       }     }   ] }

Here is the returned Json for Water (NOT WORKING)

{   "results" : [     {       "layerId" : 0,        "layerName" : "Hydrants",        "displayFieldName" : "HYDRANTNUMBER",        "foundFieldName" : "OBJECTID",        "value" : "11",        "attributes" : {         "OBJECTID" : "11",          "HydrantNumber" : "H0561",          "Location" : "S.W. CORNER OF BROWNELL AVE.AND WEST ERIE AVE",          "Hyd_Num" : "Null"       },        "geometryType" : "esriGeometryPoint",        "geometry" :        {         "x" : -9149034.62292915,          "y" : 5081286.44737778,          "spatialReference" : {           "wkid" : 102100         }       }     },      {       "layerId" : 1,        "layerName" : "Valves",        "displayFieldName" : "VALVENUMBER",        "foundFieldName" : "OBJECTID",        "value" : "11",        "attributes" : {         "OBJECTID" : "11",          "ValveNumber" : "V4016",          "Valve_Diameter" : "8"       },        "geometryType" : "esriGeometryPoint",        "geometry" :        {         "x" : -9153324.01843533,          "y" : 5077188.05044879,          "spatialReference" : {           "wkid" : 102100         }       }     },      {       "layerId" : 2,        "layerName" : "LateralNodes",        "displayFieldName" : "ENABLED",        "foundFieldName" : "OBJECTID",        "value" : "11",        "attributes" : {         "OBJECTID" : "11",          "Enabled" : "True",          "SHAPE" : "Point"       },        "geometryType" : "esriGeometryPoint",        "geometry" :        {         "x" : -9159684.58115913,          "y" : 5072989.92068145,          "spatialReference" : {           "wkid" : 102100         }       }     }   ] }

Here is a storm layer attribute

Layer: GIS.GISADMIN.StormNodes (ID: 0) Display Field: NodeType  Type: Feature Layer  Geometry Type: esriGeometryPoint  Description:  Definition Expression:  Copyright Text:  Min. Scale: 10000  Max. Scale: 0  Default Visibility: True  Extent:      XMin: 2051575.44395877     YMin: 644699.275933608     XMax: 2071690.73607719     YMax: 657055.237114027     Spatial Reference: 3734  Has Attachments: False  HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText  Drawing Info:      Renderer:         Unique Value Renderer:          Field 1: NodeType         Field 2:         Field 3:         Field Delimiter: ,         Default Symbol:             Unsupported Symbol         Default Label:         Unique Value Infos:             Value: Gutter Inlet             Label: Gutter Inlet             Description:             Symbol:                 Picture Marker Symbol:              Value: Inlet Basin             Label: Inlet Basin             Description:             Symbol:                 Picture Marker Symbol:              Value: Manhole             Label: Manhole             Description:             Symbol:                 Picture Marker Symbol:      Transparency: 0     Labeling Info: N/A  Fields:      OBJECTID (Type: esriFieldTypeOID, Alias: OBJECTID)     Element_ID (Type: esriFieldTypeDouble, Alias: Element_ID)     NodeType (Type: esriFieldTypeString, Alias: NodeType, Length: 32 )     NodeNumber (Type: esriFieldTypeString, Alias: NodeNumber, Length: 32 )     Coordinate (Type: esriFieldTypeString, Alias: Coordinate, Length: 30 )     Shape (Type: esriFieldTypeGeometry, Alias: Shape)  Type ID Field: N/A  Supported Interfaces:   REST  Supported Operations:   Query

Here is a water layer attributes, I think something is messed up here

Layer: Hydrants (ID: 0) Display Field: HYDRANTNUMBER  Type: Feature Layer  Geometry Type: esriGeometryPoint  Description:  Definition Expression:  Copyright Text:  Min. Scale: 10000  Max. Scale: 0  Default Visibility: True  Extent:      XMin: 2028056.97998909     YMin: 628506.51000617     XMax: 2077442.1400012     YMax: 662339.880002109     Spatial Reference: 3734  Has Attachments: False  HTML Popup Type: esriServerHTMLPopupTypeNone  Drawing Info:      Renderer:         Unique Value Renderer:          Field 1: Enabled         Field 2:         Field 3:         Field Delimiter: ,         Default Symbol:             Unsupported Symbol         Default Label:         Unique Value Infos:             Value: 0             Label: False             Description:             Symbol:                 Picture Marker Symbol:              Value: 1             Label: True             Description:             Symbol:                 Picture Marker Symbol:      Transparency: 0     Labeling Info:         Label Placement: esriServerPointLabelPlacementBelowCenter         Label Expression: [HYDRANTNUMBER]         Use Coded Values: True         Symbol:             Simple Text Symbol:             Type: esriTS             Color:255, 0, 0, 255             Background Color: null             Border Line Color: null             Vertical Alignment: bottom             Horizontal Alignment: center             Right To Left: False             Angle: 0             XOffset: 0             YOffset: 0             Font Family: Arial             Font Size: 8             Font Style: normal             Font Weight: bold             Font Decoration: none         Min. Scale: 0         Max. Scale: 0  Fields:      OBJECTID (Type: esriFieldTypeOID, Alias: OBJECTID)     HydrantNumber (Type: esriFieldTypeString, Alias: HydrantNumber, Length: 16 )     YearInstalled (Type: esriFieldTypeInteger, Alias: YearInstalled)     Manufacturer (Type: esriFieldTypeString, Alias: Manufacturer, Length: 32 )     Hyd_Num (Type: esriFieldTypeInteger, Alias: Hyd_Num)  Type ID Field: N/A  Supported Interfaces:   REST  Supported Operations:   Query

What do you think is the problem here?

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Thu, 29 Mar 2012 07:21:00 GMT

In your non working case, it looks like the field used for the rendering (i.e. 'Enabled') is not published by the service.

Check that your service is not hiding that field.

If you have no access to the service, the client workaround might to define your own renderer at the client side, for example a SimpleRenderer using the same symbol for all features.

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Thu, 29 Mar 2012 11:22:56 GMT

In your non working case, it looks like the field used for the rendering (i.e. 'Enabled') is not published by the service.

Check that your service is not hiding that field.

I'm pretty sure the service isn't hiding it, whenever I add it as a ArcGISDynamicMapServiceLayer it shows up just fine with all the published symbology.

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Thu, 29 Mar 2012 11:59:42 GMT

Fields:

    OBJECTID (Type: esriFieldTypeOID, Alias: OBJECTID)
    HydrantNumber (Type: esriFieldTypeString, Alias: HydrantNumber, Length: 16 )
    YearInstalled (Type: esriFieldTypeInteger, Alias: YearInstalled)
    Manufacturer (Type: esriFieldTypeString, Alias: Manufacturer, Length: 32 )
    Hyd_Num (Type: esriFieldTypeInteger, Alias: Hyd_Num)

Type ID Field: N/A

'Enabled' doesn't seem to be in the list of published fields.

ArcGISDynamicMapServiceLayer shows up fine because the rendering is done at the server side and doesn't need any published fields.

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Sat, 11 Dec 2021 18:31:45 GMT

Sorry to be miss leading, but the post only allowed for 1000 characters in this forum so i had to remove some things. Here is what the hydrants page looks like.

Layer: Hydrants (ID: 0)
Display Field: HYDRANTNUMBER

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description:

Definition Expression:

Copyright Text:

Min. Scale: 10000

Max. Scale: 0

Default Visibility: True

Extent:

    XMin: 2028056.97998909
    YMin: 628506.51000617
    XMax: 2077442.1400012
    YMax: 662339.880002109
    Spatial Reference: 3734

Has Attachments: False

HTML Popup Type: esriServerHTMLPopupTypeNone

Drawing Info:

    Renderer:
        Unique Value Renderer:

        Field 1: Enabled
        Field 2:
        Field 3:
        Field Delimiter: ,
        Default Symbol:
            Unsupported Symbol
        Default Label:
        Unique Value Infos:
            Value: 0
            Label: False
            Description:
            Symbol:
                Picture Marker Symbol:

            Value: 1
            Label: True
            Description:
            Symbol:
                Picture Marker Symbol:

    Transparency: 0
    Labeling Info:
        Label Placement: esriServerPointLabelPlacementBelowCenter
        Label Expression: [HYDRANTNUMBER]
        Use Coded Values: True
        Symbol:
            Simple Text Symbol:
            Type: esriTS
            Color:255, 0, 0, 255
            Background Color: null
            Border Line Color: null
            Vertical Alignment: bottom
            Horizontal Alignment: center
            Right To Left: False
            Angle: 0
            XOffset: 0
            YOffset: 0
            Font Family: Arial
            Font Size: 8
            Font Style: normal
            Font Weight: bold
            Font Decoration: none
        Min. Scale: 0
        Max. Scale: 0

Fields:

    OBJECTID (Type: esriFieldTypeOID, Alias: OBJECTID)
    HydrantNumber (Type: esriFieldTypeString, Alias: HydrantNumber, Length: 16 )
    YearInstalled (Type: esriFieldTypeInteger, Alias: YearInstalled)
    Manufacturer (Type: esriFieldTypeString, Alias: Manufacturer, Length: 32 )
    Model (Type: esriFieldTypeString, Alias: Model, Length: 32 )
    Ownership (Type: esriFieldTypeString, Alias: Ownership, Length: 32 )
    DrawingSet_ID (Type: esriFieldTypeInteger, Alias: DrawingSet_ID)
    DrawingSheet (Type: esriFieldTypeString, Alias: DrawingSheet, Length: 8 )
    SHAPE (Type: esriFieldTypeGeometry, Alias: SHAPE)
    Enabled (Type: esriFieldTypeSmallInteger, Alias: Enabled, Domain: Coded Values: [0: False], [1: True] )
    SOURCE_DESCRIPTION (Type: esriFieldTypeString, Alias: SOURCE_DESCRIPTION, Length: 64 )
    FOLDER (Type: esriFieldTypeString, Alias: FOLDER, Length: 128 )
    Location (Type: esriFieldTypeString, Alias: Location, Length: 255 )
    Hyd_Num (Type: esriFieldTypeInteger, Alias: Hyd_Num)

Type ID Field: N/A

Supported Interfaces:   REST

Supported Operations:   Query

This used to work with the water features before I made the symbols based on enabled. Therefore I thought that does have something to do with it. Then I did published the features again without any custom symbology and it didn't work still, so I'm just lost now.

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Thu, 29 Mar 2012 12:48:04 GMT

Sorry to be miss leading, but the post only allowed for 1000 characters in this forum so i had to remove some things.

OK looks good.

Try to define a renderer at the client side to know if it's a rendering issue.

You could also look at the requests sent to the server with fiddler (or any HTTP sniffer), that might give a clue.

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Sat, 11 Dec 2021 18:31:48 GMT

OK looks good.

You could also look at the requests sent to the server with fiddler (or any HTTP sniffer), that might give a clue.

contains true
f json
layers 0,1,2,3
returnGeometry true
searchFields OBJECTID
searchText 111
sr 102100



Cache-Control private
Content-Encoding gzip
Content-Length 895
Content-Type text/plain;charset=utf-8
Date Thu, 29 Mar 2012 13:53:03 GMT
Etag -204973084
Server Microsoft-IIS/7.5
X-Powered-By ASP.NET
Request Headersview source
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language en-us,en;q=0.5
Connection keep-alive
Host XXXXXXXX
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0.2) Gecko/20100101 Firefox/10.0.2

I have confirmed that its not the symbology, i published the water and storm again with default symbology and again storm worked and water didn't. I know the water is made up of a geomatic network and the storm is not. Can that have something to do with it?

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Thu, 29 Mar 2012 13:11:17 GMT

Content-Length 895

Looks small for features (just enough to define your 14 fields).
Are you sure some features are returned from the server? Might be a query issue.

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Sat, 11 Dec 2021 18:31:51 GMT

Looks small for features (just enough to define your 14 fields).
Are you sure some features are returned from the server? Might be a query issue.

Here is the query request

http://XXXXXX/ArcGIS/rest/services/Water_Utilities_Map/MapServer/find?searchText=5400&contains=true&returnGeometry=true&sr=102100&searchFields=HydrantNumber%2cValveNumber%2cMeter_Number%2cLateral_Number%2cPipe_Number&layers=0%2c1%2c2%2c3%2c4%2c5%2c6%2c7%2c8&f=pjson&

Here is the response

{
  "results" : [
    {
      "layerId" : 1, 
      "layerName" : "Valves", 
      "displayFieldName" : "VALVENUMBER", 
      "foundFieldName" : "ValveNumber", 
      "value" : "V5400n", 
      "attributes" : {
        "OBJECTID" : "4116", 
        "ValveNumber" : "V5400n", 
        "ValveType" : "Null", 
        "YearInstalled" : "Null", 
        "Manufacturer" : "Null", 
        "Model" : "Null", 
        "Ownership" : "Lorain", 
        "DrawingSet_ID" : "2", 
        "DwgSheet" : "1", 
        "StartNode_ID" : "Null", 
        "SHAPE" : "Point", 
        "Enabled" : "True", 
        "SOURCE_DESCRIPTION" : "Null", 
        "FOLDER" : "Null", 
        "Location" : "Null", 
        "Turns" : "Null", 
        "DirectionOpen" : "Null", 
        "Valve_Diameter" : "Null"
      }, 
      "geometryType" : "esriGeometryPoint", 
      "geometry" : 
      {
        "x" : -9148438.16978488, 
        "y" : 5081889.88472851, 
        "spatialReference" : {
          "wkid" : 102100
        }
      }
    }
  ]
}

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Thu, 29 Mar 2012 13:38:49 GMT

I do spatial queries on the features and it works fine.

Here is a spatial query working on water and adding graphics layers after i select an item in the listbox.
[ATTACH=CONFIG]13102[/ATTACH]

But when i do a find on the map service I get the results but no graphics are made once i select the item in the listbox.
[ATTACH=CONFIG]13103[/ATTACH]

Which sample would show me the easiest way to define a renderer at the client side to know if it's a rendering issue?

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Sat, 11 Dec 2021 18:31:53 GMT

As it seems that your query is correct and returns one feature, my best bet is still that the rendering defined at the client side is not the right one.

Try by using a very simple renderer such as :

<esri:GraphicsLayer>
  <esri:GraphicsLayer.Renderer>
    <esri:SimpleRenderer>
      <esri:SimpleRenderer.Symbol><esri:SimpleMarkerSymbol Color="#99FF0000"/></esri:SimpleRenderer.Symbol>
    </esri:SimpleRenderer>
  </esri:GraphicsLayer.Renderer>
</esri:GraphicsLayer>

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Fri, 30 Mar 2012 23:47:39 GMT

I think I found out the issue.

It's because your shape field is called SHAPE (uppercase) and the Find sample is looking for an attribute called "Shape".

switch (graphic.Attributes["Shape"].ToString()) .....

If you replace "SHAPE" by "Shape" that will work for your second service (but no more for the first one).

The test can be more generic:

if (graphic.Geometry is Polygon)     graphic.Symbol = LayoutRoot.Resources["DefaultFillSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; else if (graphic.Geometry is Polyline)     graphic.Symbol = LayoutRoot.Resources["DefaultLineSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol; else if (graphic.Geometry is MapPoint)     graphic.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol;

should work in both cases.

Re: Some MapService Layers Query results won't display as graphics layers

MattMiley — Mon, 02 Apr 2012 12:52:38 GMT

I think I found out the issue.

It's because your shape field is called SHAPE (uppercase) and the Find sample is looking for an attribute called "Shape".
switch (graphic.Attributes["Shape"].ToString()) .....
If you replace "SHAPE" by "Shape" that will work for your second service (but no more for the first one).

Thanks a bunch dbroux!

Re: Some MapService Layers Query results won't display as graphics layers

MaciejGolebiewski — Sat, 11 Dec 2021 18:31:56 GMT

Hello!
I think I'm encountering similar problem.
Am I doing something wrong or maybe there is some better practice to add results to graphics layer?

void QueryTaskArkPow_ExecuteCompleted(object sender, ESRI.ArcGIS.Client.Tasks.QueryEventArgs args4)
        {
            FeatureSet featureSet4 = args4.FeatureSet;

            if (featureSet4 != null && featureSet4.Features.Count > 0)
            {
                Query2DetailsDataGrid.ItemsSource = featureSet4.Features;
                featureSet4.SpatialReference = Map.SpatialReference;
                PowiatyButtonClear.IsEnabled = true;
                GraphicsLayer arkgmin = Map.Layers["ArkuszeLayer"] as GraphicsLayer;
                foreach (Graphic arkusz in featureSet4.Features)
                {
                    arkusz.Symbol = SelectedFeatureSymbol;
                    arkgmin.Graphics.Add(arkusz);
                }


            }


            else
                MessageBox.Show("No features returned from query");
        }

The query adds features' attributes to datagrid with no hesitation, I can also show messagebox for each feature with it's attributes or spatial reference, everything seems to be fine including the foreach loop.
What's even more odd it worked a couple days earlier, but now it just doesn't... 😞

Re: Some MapService Layers Query results won't display as graphics layers

DominiqueBroux — Wed, 13 Mar 2013 08:55:26 GMT

Two points to check:
- is the geometry of the returned graphics OK? (don't forget to set the Query.ReturnGeometry flag to true, the ArcGIS server default value changed a little time ago, so that could explain your issue if your server was upgraded recently).
- does your SelectedFeatureSymbol match the geometry type (point, line, polygon) of your graphics?

Re: Some MapService Layers Query results won't display as graphics layers

MaciejGolebiewski — Sat, 11 Dec 2021 18:31:58 GMT

- is the geometry of the returned graphics OK?

How to check it?

- does your SelectedFeatureSymbol match the geometry type (point, line, polygon) of your graphics?

My symbols looks like so:

<Grid.Resources>
                       
                        <esriSymbols:SimpleMarkerSymbol x:Name="IdentifyLocationSymbol" Color="Blue" Size="5" />
                        <esri:SimpleFillSymbol x:Name="SelectedFeatureSymbol" Fill="#64FF0000" BorderBrush="Red" BorderThickness="2" />
                        <esri:SimpleFillSymbol x:Name="FindFillSymbol" Fill="#500000FF" BorderBrush="Blue" BorderThickness="1" />
                        
                    </Grid.Resources>

I use "SelectedFetureSymbol" also in an IdentifyTask and it renders fine...

EDIT:
My featureSet geometry type is Envelope. Is it wrong?
The Geometry of returned Graphic is null, why is it so?
ReturnGeometry is set to true.
Print screens attached.

EDIT2:
OK, the third thing to check was if "Shape" field is ticked in mxd, why this wasn't metioned in help?