C#Entitity框架调用SaveChanges()不工作 [英] C# Entitity framework SaveChanges() not working
本文介绍了C#Entitity框架调用SaveChanges()不工作的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
运行此code后,我发现我的数据库没有entrys。 我收到了code没有错误。
有谁知道我螨做错了?
PeopleEntities1 DB =新PeopleEntities1();
人罗杰=新的Person()
{
年龄= 25,
名字=罗杰,
姓氏=兔,
位置=加拿大
工作=自由职业者,
};
db.AddToPeople(罗杰);
db.SaveChanges(真正的);
解决方案
什么是你的数据库的位置?请确保你没有你将它复制到你的输出目录每次你运行你的code。我可能已经与这是我每次运行我的应用程序时复制到输出目录中的SQLite数据库,这让我失去了我的previous运行期间所进行的更改类似的问题
After running this code I find no entrys in my database. I receive no errors from the code.
Does anyone know what I mite be doing wrong ?
PeopleEntities1 db = new PeopleEntities1();
Person roger = new Person()
{
age = 25,
firstname = "Roger",
lastname = "Rabbit",
location = "Canada",
job = "freelance",
};
db.AddToPeople(roger);
db.SaveChanges(true);
解决方案
What is the location of your database? Make sure you are not you're copying it to your output directory everytime you run your code. I might have had a similar issue with an SQLite database which was copied to the output directory every time I run my application, which made me lose changes I had made during the previous run
这篇关于C#Entitity框架调用SaveChanges()不工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文