Submitchanges not updating


30-Nov-2017 12:06

The Northwind Data Context class has properties that represent each Table we modeled within the database (specifically: Products, Categories, Customers, Orders, Order Details).As I covered in Part 3 of this blog series, we can easily use LINQ syntax expressions to query and retrieve data from our database using this Northwind Data Context class.For the case that an error occurs when saving the changes, the Data Context class provides the methods that allow resolving the most common errors.Let us demonstrate how create/update/delete (CUD) operations work in Linq Connect with a short sample: The sample is based on the CRM Demo database.The main purpose of any ORM is to make working with relational data as similar to working with objects as possible.Applied to data modification, this thesis means, in particular, that a developer does not want to keep the information about each small change that was done, as well as to invoke a separate method to persist this change.

For example, I could write the below LINQ expression to retrieve a single Product object by searching on the Product name: I could then write the LINQ query expression below to retrieve all products from the database that haven't yet had an order placed for them, and which also cost more than 0: Note above how I am using the "Order Details" association for each product as part of the query to only retrieve those products that have not had any orders placed for them.

For example, I could write the below code to update the price and # of units in stock of the "Chai" product in the database: When I call northwind.



All you need to do to video chat with sexy girls is create a free account using your email address and you will be instantly connected to girls chat!… continue reading »


Read more

Based on my experience, I think the above are good guidelines to improve your odds of getting the conversation going.… continue reading »


Read more

We also have posts that will teach you how to transition the heat from your chat session into your video session. Keep traveling down the rabbit hole of Growly (like this one) and browse a little bit further and you will also find original ideas and resources for finding sexy cam partners – of every variety – and we even have a few ideas for naughty games you can play in the virtual realm or toys that you can use to play with yourself or watch your partner play.… continue reading »


Read more

On "guy trips" my buddies and I make sure to have a stack of the glossy, horrible celebrity mags on hand.(BTW: Have you noticed all the different magazines actually use the same pictures every month?… continue reading »


Read more

Emergency services rushed to Ms Owens’ home after she reportedly found her two baby boys were not breathing when she went to check on them in their cot on Saturday morning.… continue reading »


Read more

Don’t be an a-hole,” can prevent us from wondering, “What if . This sort of stuff happens more than you might think.… continue reading »


Read more