using (var db = new entities())
string sql = "insert into userinfo values('zhangsan','123456')";引數化新增db.database.executesqlcommand(sql);
sql = "insert into userinfo values(@username,@userpass)";var param = new sqlparameter
;db.database.executesqlcommand(sql, param);
sql = "delete from userinfo where username='zhangsan'";引數化刪除db.database.executesqlcommand(sql);
sql = "delete from userinfo where username=@username";db.database.executesqlcommand(sql, new sqlparameter("@username", "lisi"));
sql = "update userinfo set username='wangwu'";db.database.executesqlcommand(sql);
sql = "select * from userinfo";完整案例:var users = db.database.sqlquery(sql);
foreach (var user in users)
//1.建立上下文物件using (var db = new entities())
;db.database.executesqlcommand(sql, param);
//刪sql = "delete from userinfo where username='zhangsan'";
db.database.executesqlcommand(sql);
//引數化刪除
sql = "delete from userinfo where username=@username";
db.database.executesqlcommand(sql, new sqlparameter("@username", "lisi"));
//改sql = "update userinfo set username='wangwu'";
db.database.executesqlcommand(sql);
//原生sql查詢
sql = "select * from userinfo";
var users = db.database.sqlquery(sql);
foreach (var user in users)
}
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