Updating dbml files
This is partly due to the Query Execution Plans which get created on SQL Server, been able to control when these Execution Plans get re-created, and also optimising the query based on database statistics, which isn't something LINQ to SQL deals with.
Also as Microsoft have said they're not going to be providing any more updates for LINQ to SQL, they're concentrating on the Entity Framework, it seems like a technology which will fade away.
Is there an easy way of synchronising the classes with the schema, or do I need to manually update the classes if a table design changes? It lets you choose the tables you want to exclude, and also to select the tables where you want the updatecheck.never for non pk columns. Huagati DBML/EDMX Tools is an add-in for Visual Studio that adds functionality to the Linq2SQL/DBML diagram designer in Visual Studio 2008, and to the ADO.
NET Entity Framework designer in Visual Studio 2008 SP1.
For LINQ to SQL, I connect with stored procedures on the SQL Server rather than using LINQ to SQL's dynamic SQL creator.
Please tell me that I am overlooking something simple.However I have to admit it's the current method I use for creating a Data Access Layer (DAL), albeit one which ultimately calls Stored Procedures, using LINQ to SQL This leads me to a problem I've been having recently, where I drag a stored procedure on from the Server Explorer in Visual Studio onto the file, which is all very nice and easy, but when it comes to changing the stored procedure such that it returns a different set of datatypes, or it's input parameters change, it's not been so easy to get the dbml file to reflect this, or not at least in a way I expect it to.So my previous workaround was to create a new file, dragging the changed stored procedure to this file which generate the auto generated code correctly for the new version of the stored procedure, I'd then simply copy that code to a new file I'd call 'dbml Filename-extension.cs' and then everything was fine to work from that file. A bit fed up with this, I managed to work out a better way to handle this, in what would appear to be the way it was designed to be done, just my thinking was maybe a little different expecting it to work in another way, but now I've discovered it, it makes good sense. Delete the stored procedure from the design surface of the file 2. Click Refresh in Server Explorer on the list of Stored Procedures 4. Check the code file and you will have the updated C# code for the new version of the stored procedure I had a bigger list to start with and I've been removing steps, so it's possible without further testing that some more steps could be removed. This walkthrough provides the steps that you must follow to create LINQ to SQL entity classes mapped to the Customers and Orders tables in the Northwind database and display the data on a Windows Form.In addition to the steps for displaying the data from the table, the steps for binding data to a LINQ query are also provided.
The Visual Studio edition that you have and the settings that you use determine these elements.