Datacontext submitchanges not updating
But this problem only occurred on our Integration Test server, not on our Dev box (Why? Products, was increasing in number each time I passed through the Add Product method snippet above, but the database table, Product, as viewed through VS Server Explorer did not have the same number of records as the context. (Some of you have guessed already.) I started Googling for help: “Insert On Submit fails”; “Submit Changes does not save”; “LINQ insanity coronary apoplexy” etc.
Submit Changes(); Totally straightforward, but when I checked the database, the Product table did not contain the new Product record I had created above. I ran the program a few times and noticed that my Entity Set, context. My colleague, who wrote the Windows Service told me that data was not being found by the Windows Service and HE was checking “Product Live”, based on the (faulty) Windows Service app.config. But, yes, I should have checked, and I should have realised quicker what was going on Life Force Depletion: Classified.
Then just use the ‘Submit Changes’ method to commit the changes to database.
Here is a simple code example below which will change a single row:(There is no difference between this and changing multiple row only need to retrieve multiple objects and change them) You will notice an interesting thing here, we didn’t have to use any extra method to tell Data Context object to notify the changes like ‘Insert On Submit’ or ‘Delete On Submit’ methods before .
The main purpose of any ORM is to make working with relational data as similar to working with objects as possible.
These will cover writing and executing ‘Update’/’Insert’/’Delete’ query in the proper way.
NET framework 3.5 and for earlier framework version, you will have to use ‘Remove’ method instead of ‘Delete On Submit’ method.
For Removing More than one database records, follow the code example below: To edit data, simply first, we will have to retrieve the objects(rows) and make changes to them wherever needed.
Product Context context = new Product Context(); Product product = new Product(); product. My pangs of internal anguish commenced immediately.
Then spake Thrifty Dave, our noble Team Leader: “Perhaps the Connection Strings are different on the Test box,” suggested Dave between mouthfuls of remaindered Sushi. *blush* (Respectfully please now imagine a luminous red object larger than the Hindenburg and covered in Wasabi paste).