public static IWorkspace CreateInMemoryWorkspace(){  // Create an in-memory workspace factory.  Type factoryType = Type.GetTypeFromProgID(    "esriDataSourcesGDB.InMemoryWorkspaceFactory");  IWorkspaceFactory workspaceFactory = (IWorkspaceFactory)    Activator.CreateInstance(factoryType);  // Create an in-memory workspace.  IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace",    null, 0);  // Cast for IName and open a reference to the in-memory workspace through the name object.  IName name = (IName)workspaceName;  IWorkspace workspace = (IWorkspace)name.Open();  return workspace;}