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Finally we extract data held in Gui controls exposed to the user.We cannot access that data once the thread is running and must get the data to to the Do Work process.

Note also that LINQ to SQL requires the Named Pipes protocol to be enabled. If you expect to take time to process all the results and are not opposed to caching the results, apply To List to the query. LINQ to SQL provides several tools for inspecting the SQL code it generates.

Make sure your connection string is correct and that your SQL Server instance is running. A connection typically remains open until you consume the query results.

for not getting the image quite clearly) – But we are interested in only in the below entities (only for the sake of this tutorial) – This completes Entity Framework Part. Press Ctrl F5 A WCF Test client will open, now double click on any of the method on the left pane, and enter the input manually as shown below and then press Invoke. It is neither mentioned any where nor even concluded that this is the only possible way to go with, as there will be always a chance for a new approach in achieving the same requirement (in context of programming).

Now let’s code against pubs Entities i.e., the class generated from the Entity Framework (you can find it by double clicking the Pubs Entity Model. So let’s go back to Pubs cs:- Import the name space System. The above mentioned code is strictly written and explained for the sake of new comers to C# and ASP.

To Follow up with the Client construction, which utilizes this Service. Disclaimer: All coding and suggestions made in the above discussion is strictly in point of view of the author.

this article shows how to do GUI processing and background work in WPF using C# with an eye on progress and the ability to cancel.

NET Framework assemblies marked with the Allow Partially Trusted Callers Attribute attribute. NET Framework are intended for use only by fully trusted code. The original data is used to check against the current database state to assert that it is in fact still unchanged.

LINQ to SQL generates the same SQL for views as it does for tables. Is there a construct that can help with Data Context pooling? To obtain new instances based on the current state of the database, use a new Data Context. The second Data Context instance seems to return cached values. When you make updates, you use optimistic concurrency.

We get a numeric percentage which moves the bar along and incremental movements.

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