实体框架：存储过程后查找返回空值

Question

I have a stored procedure which inserts data into a table. I'm querying immediately after the stored procedure statement with .Find to see if the insert happened, and it's returning null. If I query later with another DbContext , it's there, so it's as if that I need to refresh the context.

Some sample code:

string name = "Awesome book";
string id = Guid.NewGuid().ToString();

// Entity Framework context
BooksDb db = new BooksDb();

// call to stored procedure 
db.insert_book(id, name);

// check if it's there
book b = db.books.Find(id); // b is null

Do I need to refresh something to I get to find the item with id that I'm looking for?

Update: I figured it out thanks to the comments below. I was actually looking for the id which I thought I was inserting, however the stored procedure had auto id creation. So basically I was querying something which didn't exist. :)

Answer 1

After checking the stored procedure, I figured that it had auto id creation, so I wasn't actually querying the item that I thought I had the id. SaveChanges being called on DBContext makes sure that it lights up as well.