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System.Object obj = Activator.CreateInstance(Type.GetTypeFromProgID("esriLocation.LocatorManager"));
ILocatorManager2 locatorManager2 = obj as ILocatorManager2;
ILocatorWorkspace locatorWorkspace = locatorManager2.GetLocatorWorkspaceFromPath(@"Z:\ESRI\DataMaps10\streetmap_na");
locator = locatorWorkspace.GetLocator("Street_Addresses_US");
IAddressGeocoding addressGeocoding = (IAddressGeocoding)locator;  //this  fails

Inspecting the addressCoding object gives

'addressGeoCoding.matchFields' threw an exception of type Interop.COMException

1

check if the locator object is of the type IAddressGeocoding before casting it to that interface.

If(locator is IAdressGeocoding)
{
   IAddressGeocoding addressGeocoding = (IAddressGeocoding)locator;
}
  • surprisingly enough it is... – patrick Sep 8 '10 at 18:47
  • 1
    @iterationx, Noticed that the locator is not declared in the code snippet, how is it declared? I had som issues with some objects that got garbaged collected, setting the variable as static or as a class variable solved that.. – MathiasWestin Sep 8 '10 at 19:04
  • I checked its not out of scope, I'll keep that in mind tho, thanks – patrick Sep 8 '10 at 19:10
1

With ArcEngine, you need to be sure to call IAoInitialize.Initialize when your app starts. Otherwise it throws exceptions in really strange places.

1

My .loc file was corrupted

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