How to extract all of the coordinate system names from the coordinate system dictionary and check their types?

By Partha Sarkar

The
OSGeo.MapGuide namespace contains a set of classes which provide access to the
CS-Map coordinate system functionality in both the AutoCAD Map 3D and AIMS
environments.

MgCoordinateSystemFactory is used to get the coordinate system
categories and the coordinate system catalog. MgCoordinateSystemCatalog is used
to get the various dictionaries. MgCoordinateSystemDictionary
contains definitions for earth-based and Euclidean coordinate systems.

The following code extracts all of the coordinate system names from the coordinate system dictionary, uses those names to get all of the coordinate system definitions from the dictionary and determines the type (projected, geographic, or
arbitrary) of the coordinate system from its definition, and stores the name of
the coordinate system in a list according to its type. 

//MgCoordinateSystemFactory coordSysFactory = new MgCoordinateSystemFactory();
//MgCoordinateSystemCatalog csCatalog = coordSysFactory.GetCatalog();
//MgCoordinateSystemDictionary csDict = csCatalog.GetCoordinateSystemDictionary();
 
List arbitraryCs = new List();
List geographicCs = new List();
List projectedCs = new List();
 
MgCoordinateSystemEnum csDictEnum = csDict.GetEnum();
 
// the following line gets all of the names in the dictionary
// uses those names to get the coordinate 
 
int csCount = csDict.GetSize();
ed.WriteMessage("nCoordinate System Count : " + csCount.ToString());
ed.WriteMessage("n-------------------------------------------------");
MgStringCollection csNames = csDictEnum.NextName(csCount);
string csName = null;
MgCoordinateSystem cs = null;
int csType = 0;
for (int i = 0; i < csCount; i++)
{
 csName = csNames.GetItem(i);
 cs = csDict.GetCoordinateSystem(csName);
 csType = cs.GetType();
 if (csType == MgCoordinateSystemType.Arbitrary)
 {
  arbitraryCs.Add(csName);
 }
 else if (csType == MgCoordinateSystemType.Geographic)
 {
  geographicCs.Add(csName);
 }
 else if (csType == MgCoordinateSystemType.Projected)
 {
  projectedCs.Add(csName);
 }          
  ed.WriteMessage("nCoordinate System Name : " + csName.ToString());
}

Hope this is useful to you !