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  • ADO.NET怎删改+vs 2013 C#

              一、删除

                string constr = "server=.;database=test;uid=sa;pwd=sa";
                SqlConnection myconnection = new SqlConnection(constr);
                myconnection.Open();
                string sql = "delete from students where ID=5";
                SqlCommand sc = new SqlCommand(sql,myconnection);
                sc.ExecuteNonQuery();
                SqlDataAdapter sda = new SqlDataAdapter("select * from students",myconnection);
                System.Data.DataSet dr = new System.Data.DataSet();
                sda.Fill(dr,"students");
                sda.Update(dr,"students");
                ViewBag.students = dr.Tables[0];
                return View();
                


    二、插入
                string constr = "server=.;database=test;uid=sa;pwd=sa";
                SqlConnection myconnection = new SqlConnection(constr);
                myconnection.Open();
                string sql1 = "insert into students(sno,name,sex,age) values('101411','历历','男','18')";
                SqlCommand sc = new SqlCommand(sql1, myconnection);
                sc.ExecuteNonQuery();
                string sql = "select * from students";
                SqlDataAdapter sda = new SqlDataAdapter(sql,myconnection);
                System.Data.DataSet ds = new System.Data.DataSet();
                sda.Fill(ds,"students");
                ViewBag.students = ds.Tables[0];
                return View();




    三、更新
                string constr = "server=.;database=test;uid=sa;pwd=sa";
                SqlConnection myconnection = new SqlConnection(constr);
                myconnection.Open();
                string sql1 = "update students set sno='1',name='华华' where ID=2";
                SqlCommand sc = new SqlCommand(sql1, myconnection);
                sc.ExecuteNonQuery();
                string sql = "select * from students";
                SqlDataAdapter sda = new SqlDataAdapter(sql, myconnection);
                System.Data.DataSet ds = new System.Data.DataSet();
                sda.Fill(ds, "students");
                ViewBag.students = ds.Tables[0];
                return View();

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  • 原文地址:https://www.cnblogs.com/dingfangbo/p/5769495.html
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