[C#] get IRasterWorkspaceEx from IWorkspaceFactory

[oyleiste]

Hello

I need to create IRasterWorkspaceEx to use it for creating IMADtedLayer. This is how:

IWorkspaceFactory wsf = new RasterWorkspaceFactoryClass(); IRasterWorkspaceEx rasterwsEx = (IRasterWorkspaceEx)wsf.OpenFromFile(foldername, 0); //then create IRasterCatalog and etc.

Every time I get error on casting IWorkspace (output of OpenFromFile) to IRasterWorkspaceEx.
Is there anyone to answer this question? 😞

Thank you

[NeilClemmons]

What path are you passing in?  This interface, as mentioned in the developer help, is only available for personal, file, and sde geodatabases.  So, if you're not passing in a path to a geodatabase then the cast will fail because the factory is not returning a class type that implements this interface.

[oyleiste · Accepted solution]

I was trying to pass .dt0 file.
Actually I solved my problem using this great guy's blog: Creating a Mosaic of FalconView DTED in the GIS Editor

But I'm a little sad, because I couldn't use IMADtedLayer for this purpose. I used IRasterLayer. When I add the layer to axMapControl, something like this appears:

By the way, is there any built-in function for get "Line of Sight" of a specific points?

Thank for your reply