I have a UniqueValueRenderer. It is working for a graphicoverlay, but when I try to apply it to an ArcGISMapImageSublayer. It does not work..Then I tried to find some examples online. Seems no one uses it in this way. I am wondering is it possible? Does anyone have experience on this?
It is possible to use a UniqueValueRenderer with an ArcGISMapImageSublayer - this sample shows a similar workflow but using a ClassBreaksRenderer: Change sublayer renderer | ArcGIS for Developers