main( )

{

SldWorks App = new SldWorks();

App.Visible = true;

ModelDoc2 swModel = App.ActiveDoc;

SelectionMgr swSelMgr = swModel.SelectionManager;

object swEnt = swSelMgr.GetSelectedObject5() as Face2;

int lErrorActivatingDoc = ;

string path = @"C:\Users\Administrator\Desktop\零件2.SLDDRW";

DrawingDoc swDrawing = App.ActivateDoc2(path, false, ref lErrorActivatingDoc) as DrawingDoc;

SolidWorks.Interop.sldworks.View firstView = swDrawing.GetFirstView();

firstView = firstView.GetNextView();

Face2 face = swEnt as Face2;

var edges = face.GetEdges();

foreach (Edge ee in edges)

{

  bool bRet = firstView.SelectEntity(ee, false);

  swDrawing.SetLineWidth();

}

}