i am facing the problem to add a mapgrid to existing map insets created in a pagelayout at an earlier step. I can implement some code in a DLL loaded by reflection to add some operations like adding a north arrow, a legend or modifying existing elements of the pagelayout using an available interface. Up to now I am able to get the created map insets and to create the map grid but I have difficulties to "link" them together.
Here is the code I tried:
for (int i = 0; i < localMap.MapSurroundCount; i++)
{
IMapSurround mapSurround = localMap.MapSurround[i];
if (mapSurround is MapInset)
{
IMapInset mapinset = mapSurround as IMapInset;
IFrameElement frameElement = graphicsContainer.FindFrame(mapinset);
if (frameElement != null)
{
ICustomOverlayGrid mapGridCarroyage = new CustomOverlayGridClass();
...
... setting some properties for mapGridCarroyage
...
IMapFrame mapFrame = frameElement as IMapFrame;
IMapGrids mapGrid = mapframe as IMapGrids;
mapGrid.AddMapGrid(mapGridCarroyage);
}
}
}mapFrame is always null but localMap.Mapssurround[i] is returning correctly an existing MapInset and frameElement is not null.
What is going on? what am i doing wrong?
