c# - Esri maps coordinate convert -


i'm trying implement esri maps wpf project , can't head around coordinates use. old system used lat/long need same values esri.

when mappoint object current position of map, x value 300464.16687909653 , y value 524877.02696703083. need take these values , convert them lat , lon, convert them other way whenever necessary. i'm struggling finding can conversion, presumed there easy c# conversion methods lying around can't seem find them.

can help?

(just clear, i'm using .net sdk)

with last comment got , @himbrombeere mentioned - coordinates wgs84 (world mercator) , wgs84 (gps). it's epsg:3395 , epsg:4326.

enter image description here

you may try online coordinate converter yourself.

next coordinate reference system (crs) dropdown box can click , display crs's parameters:

epsg:3395

projcs["wgs 84 / world mercator",     geogcs["wgs 84",         datum["wgs_1984",             spheroid["wgs 84",6378137,298.257223563,                 authority["epsg","7030"]],             authority["epsg","6326"]],         primem["greenwich",0,             authority["epsg","8901"]],         unit["degree",0.01745329251994328,             authority["epsg","9122"]],         authority["epsg","4326"]],     unit["metre",1,         authority["epsg","9001"]],     projection["mercator_1sp"],     parameter["central_meridian",0],     parameter["scale_factor",1],     parameter["false_easting",0],     parameter["false_northing",0],     authority["epsg","3395"],     axis["easting",east],     axis["northing",north]]

epsg:4326

geogcs["wgs 84",     datum["wgs_1984",         spheroid["wgs 84",6378137,298.257223563,             authority["epsg","7030"]],         authority["epsg","6326"]],     primem["greenwich",0,         authority["epsg","8901"]],     unit["degree",0.01745329251994328,         authority["epsg","9122"]],     authority["epsg","4326"]]

going deeper may have @ following links. dotspatial geographic information system library written .net 4. allows developers incorporate spatial data, analysis , mapping functionality applications or contribute gis extensions community (see second link).

  1. how perform transformations using projnet?

  2. how transform lambert coordinates in c#?


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