To use ESRI provided map service (WGS 84), all our map services are been projected onto the WGS84 coordinate system and added into the map control during initialization phase. However, to generate a relatively accurate length (e.g., 500 feet) segment on our map, I want to change the map projection into State Plane. Is there any way that I can do this?
You can only change the map's projection when the map's Layers collection is empty or before the map loads. Setting the spatial reference of the map is done simply by setting a startup extent, and ensuring that the spatial reference of that extent is defined.
