How to show the GML data and what the Progress is

Topics: Data Access, SharpMap v2.0
May 27, 2008 at 2:08 AM
Edited May 29, 2008 at 7:56 AM
Hi!
I know the sharpmap can access the GML data ,but how it access the data and show it,what the progress is?
The code is:
SharpMap.Layers.VectorLayer layWorld = new SharpMap.Layers.VectorLayer("TOP10DEMO");
layWorld.DataSource = new SharpMap.Data.Providers.Ogr(@"D:\DemoWinForm\Data\ArcGlobeData\top10nl\TOP10DEMO.gml");
MainMapImage.Map.Layers.Add(layWorld);
MainMapImage.Map.ZoomToExtents();
MainMapImage.Refresh();
So how do i to access the GML data?