/// <summary>
/// Create a singleton for a workspace factory
/// </summary>
/// <param name="eGISStorageType"></param>
/// <returns>CALLER IS RESPONSIBLE FOR RELEASING RETURNED COM OBJECT</returns>
/// <remarks>This is the only correct method for creating a workspace factory. Do not call "New" to create this singleton classes.
/// http://forums.esri.com/Thread.asp?c=93&f=993&t=178686
/// </remarks>
private static IWorkspaceFactory GetWorkspaceFactory(ArcMapBrowse.GISDataStorageTypes eGISStorageType)
{
Type aType = null;
IWorkspaceFactory pWSFact = null;
try
{
switch (eGISStorageType)
{
case ArcMapBrowse.GISDataStorageTypes.RasterFile:
aType = Type.GetTypeFromProgID("esriDataSourcesRaster.RasterWorkspaceFactory");
break;
case ArcMapBrowse.GISDataStorageTypes.ShapeFile:
aType = Type.GetTypeFromProgID("esriDataSourcesFile.ShapefileWorkspaceFactory");
break;
case ArcMapBrowse.GISDataStorageTypes.FileGeodatase:
aType = Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory");
break;
case ArcMapBrowse.GISDataStorageTypes.CAD:
aType = Type.GetTypeFromProgID("esriDataSourcesFile.CadWorkspaceFactory");
break;
case ArcMapBrowse.GISDataStorageTypes.PersonalGeodatabase:
aType = Type.GetTypeFromProgID("esriDataSourcesGDB.AccessWorkspaceFactory");
break;
case ArcMapBrowse.GISDataStorageTypes.TIN:
aType = Type.GetTypeFromProgID("esriDataSourcesFile.TinWorkspaceFactory");
break;
default:
throw new Exception("Unhandled GIS storage type");
}
pWSFact = (IWorkspaceFactory)Activator.CreateInstance(aType);
}
catch (Exception ex)
{
Exception ex2 = new Exception("Error getting workspace factory", ex);
ex2.Data["Workspace Type"] = eGISStorageType.ToString();
throw ex2;
}
// CALLER IS RESPONSIBLE FOR RELEASING RETURNED COM OBJECT
return(pWSFact);
}
/// <summary>
/// Open a file-based workspace (Raster or ShapeFile)
/// </summary>
/// <param name="fiFullPath">Workspace directory or file path</param>
/// <returns>CALLER IS RESPONSIBLE FOR RELEASING RETURNED COM OBJECT</returns>
public static IWorkspace GetWorkspace(FileSystemInfo fiFullPath)
{
ArcMapBrowse.GISDataStorageTypes eType = GetWorkspaceType(fiFullPath.FullName);
IWorkspaceFactory pWSFact = GetWorkspaceFactory(eType);
DirectoryInfo fiWorkspace = GetWorkspacePath(fiFullPath.FullName);
IWorkspace pWS = pWSFact.OpenFromFile(fiWorkspace.FullName, ArcMap.Application.hWnd);
// Must release the workspace factory object
int refsLeft = 0;
do
{
refsLeft = System.Runtime.InteropServices.Marshal.ReleaseComObject(pWSFact);
}while (refsLeft > 0);
// CALLER IS RESPONSIBLE FOR RELEASING RETURNED COM OBJECT
return(pWS);
}
public static ILayer AddToMap(FileSystemInfo fiFullPath, string sLayerName = "", string sGroupLayer = "", FileInfo fiSymbologyLayerFile = null, bool bAddToMapIfPresent = false)
{
if (!fiFullPath.Exists)
{
return(null);
}
// Only add if it doesn't exist already
ILayer pResultLayer = GetLayerBySource(fiFullPath);
if (pResultLayer is ILayer && !bAddToMapIfPresent)
{
return(pResultLayer);
}
// Confirm that the symbology layer file exists
if (fiSymbologyLayerFile != null && !fiSymbologyLayerFile.Exists)
{
Exception ex = new Exception("A symbology layer file was provided, but the file does not exist");
ex.Data["Data Source"] = fiFullPath.FullName;
ex.Data["Layer file"] = fiSymbologyLayerFile.FullName;
throw ex;
}
ArcMapBrowse.GISDataStorageTypes eStorageType = GetWorkspaceType(fiFullPath.FullName);
IWorkspace pWorkspace = GetWorkspace(fiFullPath);
switch (eStorageType)
{
case ArcMapBrowse.GISDataStorageTypes.RasterFile:
IRasterDataset pRDS = ((IRasterWorkspace)pWorkspace).OpenRasterDataset(fiFullPath.Name);
IRasterLayer pRLResult = new RasterLayer();
pRLResult.CreateFromDataset(pRDS);
pResultLayer = pRLResult;
break;
case ArcMapBrowse.GISDataStorageTypes.CAD:
string sFile = Path.GetFileName(Path.GetDirectoryName(fiFullPath.FullName));
string sFC = sFile + ":" + Path.GetFileName(fiFullPath.FullName);
IFeatureClass pFC = ((IFeatureWorkspace)pWorkspace).OpenFeatureClass(sFC);
pResultLayer = new FeatureLayer();
((IFeatureLayer)pResultLayer).FeatureClass = pFC;
break;
case ArcMapBrowse.GISDataStorageTypes.ShapeFile:
IFeatureClass pShapeFile = ((IFeatureWorkspace)pWorkspace).OpenFeatureClass(fiFullPath.FullName);
pResultLayer = new FeatureLayer();
((IFeatureLayer)pResultLayer).FeatureClass = pShapeFile;
break;
case ArcMapBrowse.GISDataStorageTypes.TIN:
ITin pTIN = ((ITinWorkspace)pWorkspace).OpenTin(fiFullPath.FullName);
pResultLayer = new TinLayer();
((ITinLayer)pResultLayer).Dataset = pTIN;
pResultLayer.Name = fiFullPath.Name;
break;
default:
Exception ex = new Exception("Unhandled GIS dataset type");
ex.Data["FullPath Path"] = fiFullPath.FullName;
ex.Data["Storage Type"] = eStorageType.ToString();
throw ex;
}
if (!string.IsNullOrEmpty(sLayerName))
{
pResultLayer.Name = sLayerName;
}
if (string.IsNullOrEmpty(sGroupLayer))
{
((IMapLayers)ArcMap.Document.FocusMap).InsertLayer(pResultLayer, true, 0);
}
else
{
IGroupLayer pGrpLayer = GetGroupLayer(sGroupLayer);
((IMapLayers)ArcMap.Document.FocusMap).InsertLayerInGroup(pGrpLayer, pResultLayer, true, 0);
}
ArcMap.Document.UpdateContents();
ArcMap.Document.ActiveView.Refresh();
ArcMap.Document.CurrentContentsView.Refresh(null);
return(pResultLayer);
}
