How to remove the labels rendered by UpdateGraphicsLayer

Permanently deleted user

April 05, 2017 13:35

Hello,

 

I use Update Graphic Layer activity to label the selected features in my workflow, I give a Graphics Layer ID in this activity.  I then tried to remove the labels using Remove Map Service with the same ID, but the labels won’t get removed.    How to  remove these labels?

 

Thanks

 

Feng

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  Permanently deleted user

  April 05, 2017 13:48

  Hi Feng, use the activity "Update Graphic Layers" with same Graphics Layer ID and set the parameter "Remove all Features to True". That should work.

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  Permanently deleted user

  April 05, 2017 14:21

  Thanks Srikanth,

   

  I set "Remove all Features to True" to true,  it doesn't work. 

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  Permanently deleted user

  April 05, 2017 14:25

  should I setup something before I use "UpdateGraphicsLayer", or before I use "RemoveMapservice" ?

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  Permanently deleted user

  April 06, 2017 07:37

  Is it possible for you to provide the workflow here or any screenshot to understand the problem clearly?

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  Permanently deleted user

  April 07, 2017 17:02

  I figured it out.  After I give the Graphics Layer ID an actually name (rather than a default variable), it works

   

  Thank you Srikanth.

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  Permanently deleted user

  July 31, 2017 05:41

  I am currently trying to make something similar, I need to draw a label on the map, using UpdateGraphicsLayer (or similar).   What did you create for the FeatureSet ? 

  I tried creating an ESRI.ArcGIS.Client.Symbols.TextSymbol , but i can't work out how to assign the X,Y and SpatialReference

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  Permanently deleted user

  August 08, 2017 17:40

  I would like to know how you even got the render to work, I get an error saying "The calling thread cannot access this object becauyse a different thread owns it".  I have used their input examples without altering and have tried using the JSON straight from ArcServer using the symbology of my choice but I get syntax and compiling ewrrors on the JSON using ESRI.ArcGIS.Client.Renderer.FromJson.  

   

  Can you show how you used this?

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  Permanently deleted user

  August 09, 2017 06:15

  here is what I did to draw a rectangle on my map:

  1. Create a pPCPolyline = new ESRI.ArcGIS.Client.Geometry.PointCollection()

   

  2. Add a "Add to collection <T>" activity in workflow sequence: 

   

      Field; Collection = pPCPolyline

   

      Field; Item= new ESRI.ArcGIS.Client.Geometry.MapPoint(x,y,spatialReference1)

   

      Field; TypeArgument = ESRI.ArcGIS.Client.Geomerty.MapPoint

   

      // note that I got the x,y and spatialRef previously,  from Map and point clicked - (just hard-code some values to try)

   

  3. Repeat the "Add to collection <T>" activity several times to complete your polyline.  ! you must turn around clockwise otherwise you endup with an Hour_glass instead of a rectangle.

   

  4. Create a new myPolygon1 using an "assign" thing:

   

      myPolygon1 = new ESRI.ArcGIS.Client.Geometry.Polygon()

   

  5. Add another "Add to Collection<T> activity

   

      In this activity, you will add your group of points inside one "ring" of your myPolygon1

   

      Field; Collection = myPolygon1.Rings

   

      Field; Item = pPCPolyline

   

      Field; TypeArgument = ESRI.ArcGIS.Client.Geometry.PointCollection

   

  6. Set WKID to your polygon : assign myPolygon1.StatialReference = spatialReference1 (*) I got that from getMapInfo.

  7. Create an activity called "update graphic Layer"

   

    Field; Graphic Layer ID = "myGraphicLayer" (or use "Drawing")

   

    Field; Remove all features : False

   

    Field; FeatureSet = New ESRI.ArcGIS.Client.Tasks.FeatureSet(myPolygon1)

   

     Field Renderer = New ESRI.ArcGIS.Client.SimpleRenderer With{  .Symbol = New ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol()   With  {    .Fill = New System.Windows.Media.SolidColorBrush() With {   .Color = System.Windows.Media.Color.FromArgb(255, 255, 255, 255)    },   .BorderBrush = new System.Windows.Media.SolidColorBrush(System.Windows.Media.Color.FromArgb(255, 255, 0, 0)),   .BorderThickness = 0  }}

   

  _img_ alt="Draw Box" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=907f20000000SO8&feoid=Body&refid=0EMf2000000E40r"_/_img_

   

  _img_ alt="graphic rendering" src="https://latitudegeo--c.na53.content.force.com/servlet/rtaImage?eid=907f20000000SO8&feoid=Body&refid=0EMf2000000E40w"_/_img_

   

   

  I would do a better screen capture but the Workflow editor is SO NARROW that we can't see a single thing :) haha 

   

   

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