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.Today one of my friend asked me about simple insert,update and delete example with LINQ-To-SQL but at that time i was not having any simple example which will show the power of LINQ-To-SQL Example.So i have decided to create one simple example with LINQ-To-SQL and also decide to blog about it.These queries are then sent to the database for the purpose of execution. After obtaining the results from the database, LINQ to SQL again translates them to objects. NET developers, LINQ to SQL (also known as DLINQ) is an electrifying part of Language Integrated Query as this allows querying data in SQL server database by using usual LINQ expressions. Submit Changes() Dim inserted Employee As Employee = db. You'll be able to see exactly when it has a fresh version by looking whether the newly generated file contains the new parameter.
Now that you understand the problem the solution is simple: Define a primary key in your table.
Step 1 − Make a new “Data Connection” with database server.
View &arrar; Server Explorer &arrar; Data Connections &arrar; Add Connection Step 2 − Add LINQ To SQL class file Step 3 − Select tables from database and drag and drop into the new LINQ to SQL class file. The rules for executing a query with LINQ to SQL is similar to that of a standard LINQ query i.e. There are various components that play a role in execution of a query with LINQ to SQL and these are the following ones. Connection Strings("Linq To SQLDBConnection String"). To String() Dim db As New Linq To SQLData Context(connect String) Dim new Employee As New Employee() new Employee.
Then open Database Explorer and drag and drop Product table on the newly generated LINQ-to-SQL Class like following. Now we will insert some data to our table and then first we will write code to get all product information from the database.
I have created a function called Get Product which will print all the product information on page with the help of Response.
NET like reduced complexity, few lines of coding and many more.