Problem in loading other shapefiles in the given SharpMap tutorial code

Topics: Español, SharpMap Project, SharpMap v2.0, WinForms Controls
Jul 8 at 7:06 AM
I am currently working on sharpmap project with the need to work on offline maps. As i am fresher in this field,I am following the sharpmap tutorial and facing a problem with loading new shape files in the given tutorial code.
For Example : SharpMap.Layers.VectorLayer("States");
        vlay.DataSource = new SharpMap.Data.Providers.ShapeFile("path_to_data\\states_ugl.shp", true);
At this line of code,if i pass a different shapefile,code builds with a blank background or no display.
I have tried with different shape files with different sizes but the result is the same. It only works for the mentioned states_ugl.shp file given in the code.Please need help regarding this issue as i am a fresher in this field.
Thanks