[数据库操作] 图层清理

萧闫子

1. public string[] PurgeLayers()
   
2. {
   
3. List<string> Lays = new List<string>();
   
4. using (Transaction Trans = DB.TransactionManager.StartTransaction)
   
5. {  
   
6. LayerTable LayTab = Trans.GetObject(DB.LayerTableId, OpenMode.ForWrite);  
   
7. DB.Clayer = LayTab("0");  
   
8. ObjectIdCollection IDs = new ObjectIdCollection();  
   
9. foreach (ObjectId ID in LayTab)
   
10. {   
    
11. IDs.Add(ID);  
    
12. }  
    
13. DB.Purge(IDs);  
    
14. LayerTableRecord LayTabRec = null;  
    
15. foreach (ObjectId ID in IDs)
    
16. {   
    
17. LayTabRec = Trans.GetObject(ID, OpenMode.ForWrite);   
    
18. Lays.Add(LayTabRec.Name.ToUpper);   
    
19. LayTabRec.Erase(true);  
    
20. }  
    
21. Trans.Commit();
    
22. }
    
23. return Lays.ToArray();
    
24. }

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