topic Re: Moving layers up/down removes symbols for graphics in ArcGIS API for Silverlight Questions

Moving layers up/down removes symbols for graphics

JohanCarlsson — Thu, 20 Dec 2012 06:13:56 GMT

Merry Christmas everyone! I have a question regarding moving layers:

When changing a layers index in the map, the symbology changes to something completely different. If you've added a TextSymbol to the layer being moved, you won't be able to read it at all since it changes to an entirely different symbol. Would I have to rewrite this command to iterate over each symbol and save its attributes to solve this? What kind of information is saved when moving a layer like this?

Regards
Johan Carlsson

Re: Moving layers up/down removes symbols for graphics

DominiqueBroux — Fri, 21 Dec 2012 06:02:31 GMT

When changing a layers index in the map, the symbology changes to something completely different

That doesn't seem to be a normal behavior.
Could you give more info on your type of layers and how to reproduce the issue?

Thanks

Re: Moving layers up/down removes symbols for graphics

JohanCarlsson — Fri, 21 Dec 2012 07:34:56 GMT

Draw any type of graphic on a GraphicsLayer.

I use a color dialog to set the color of border/fill and change opacity, no xaml-defined style. Only the initial symbology when placing the object is defined in the xaml.

Change the layers index to lower/higher and the symbology resets to the basic transparent with black border.

This occurs with the default tool delivered with the viewer and when I do it myself in code behind.
Any ideas?

Additional information:

I add graphics exactly like this sample:
http://resources.arcgis.com/en/help/silverlight-api/samples/start.htm#DrawGraphics

Re: Moving layers up/down removes symbols for graphics

JohanCarlsson — Fri, 21 Dec 2012 08:24:56 GMT

It isn't really a problem for any other type of graphic than MapPoints though, since they change symbol to an orange pin, making text unreadable.

Re: Moving layers up/down removes symbols for graphics

DominiqueBroux — Fri, 04 Jan 2013 11:36:28 GMT

2.I use a color dialog to set the color of border/fill and change opacity, no xaml-defined style.

How to do change the color? Are you changing the symbol (i.e creating a new symbol for each color) or are you changing an attribute value that is binded to the border color by your custom symbol?

Depending on how it's done, setting RendererTakesPrecedence to false might help.

Re: Moving layers up/down removes symbols for graphics

JohanCarlsson — Fri, 10 Dec 2021 20:13:40 GMT

How to do change the color? Are you changing the symbol (i.e creating a new symbol for each color) or are you changing an attribute value that is binded to the border color by your custom symbol?

Depending on how it's done, setting RendererTakesPrecedence to false might help.

When the symbol is first placed, the user gets to choose his/her own ARGB-value and then I set it like this:

            TextSymbol textSymbol = new TextSymbol()
            {
                FontSize = fontSize,
                Text = textBoxLabel.Text,
                Foreground = new SolidColorBrush(Color.FromArgb(255, argb.red, argb.green, argb.blue))
            };


            Graphic textLabel = new Graphic()
            {
                Symbol = textSymbol,
                Geometry = mapPoint
            };

RendererTakesPresedence = false solved this, thank you very much!