摘要：1。Entity FrameWork的增删改：demoEntities db = new demoEntities();//EF上下文 Product product = new Product(); //product.PName = "zifu"; //product.DelFlag = 0; //db.Product.AddObject(product);//AddObject的方法的本质为先Attach，后db.ObjectStateManager.ChangeObjectState(product, EntitySta... 阅读全文

摘要：1匿名类：没有名字的类！ var obj = new { name = "zhangsan", id = 5 }; Console.WriteLine(obj.id); Console.WriteLine(obj.name); var objt = new { dd = 1, xx = "t", fd = false }; Console.WriteLine(objt.fd); Console.WriteLine(objt.dd); Console.WriteLi... 阅读全文

摘要：1.首先从这个pdm文件文件中抽出xml的"一张表"：<?xml version="1.0" encoding="gb2312"?><Model xmlns:a="attribute" xmlns:c="collection" xmlns:o="object"> <o:Table Id="o6"> <a:ObjectID>4305BC1B-3526-4E12-8C6C-C1BF0F5C59D2</a:O 阅读全文