Christian Graefe recently posted an update on his additions to the GDAL/OGR  C# wrapper and his OGR provider for SharpMap.

Apart from the data sources that SharpMap already supports, Christians OGR provider adds support for "MapInfo File", "TIGER", "S57", "DGN", "Memory", "CSV", "GML", "Interlis 1", "Interlis 2", "SQLite" and "ODBC". If I'm not completely wrong he is also working on a GDAL raster layer as well...

Look at http://www.volley-boy.de/home/sharpmap.aspx

You will need to install FWTools to use it.

Great work Christian !