Today, in this tutorial, I will try to give some more examples on other types of database operations, that writes/updates the database.
These will cover writing and executing ‘Update’/’Insert’/’Delete’ query in the proper way.
We can do this by adding partial classes to our project that add validation rules to our data model classes (I cover how to-do this in-depth in my Part 4: Updating our Database LINQ to SQL tutorial).
For example, we could add validation rules to enforce that the Customer's phone number follows a valid phone pattern, and that we don't add Orders where the customer's Required Date for delivery is before the actual Order Date of the Order.
Recently, I have discussed about getting started linq to sql in c#
That articles also covered for creating select query for retrieving both single and multiple results.
The SELECT Operation Conculsion To perform select, insert, update and delete operations we create a table and create a data context class; in other words a dbml file.
Now we should drag all the tables onto the left-hand side of the designer and save (as shown in the following figure).Over the last few weeks I've been writing a series of blog posts that cover LINQ to SQL.LINQ to SQL is a built-in O/RM (object relational mapper) that ships in the . If you omit the WHERE clause, all records in the table will be updated! The WHERE clause specifies which record(s) that should be updated.