1 public void ChangeBB(string filePath,string fileName) 2 { 3 IMxdContents pMxdC = axMapControl1.Map as IMxdContents; 4 IMapDocument pMapDocument = new MapDocumentClass(); 5 pMapDocument.New(string.Format("{0}/{1}",filePath,fileName)); 6 IDocumentVersion docversion = (IDocumentVersion)pMapDocument; 7 docversion.DocumentVersion = esriArcGISVersion.esriArcGISVersion93; 8 IActiveView pActiveView = axMapControl1.Map as IActiveView; 9 pMapDocument.ReplaceContents(pMxdC); 10 pMapDocument.Save(true, true); 11 }