Here we will perform Select, Insert, Update and Delete operations on a COURSE table.Step 1: Create a COURSE Table in the database Step 2: Create a Context Data file using the Object Relational Designer: Create a new item, select the LINQ to SQL classes (as shown in the following figure) and name it
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.
In this file designer view we drag and drop the COURSE table from the Server Explorer.
NET Framework 3.5 release, and which enables you to easily model relational databases using . You can use LINQ expressions to query the database with them, as well as update/insert/delete data.
Below are the first three parts of my LINQ to SQL series: In today's blog post I'll cover how we we can use the data model we created earlier, and use it to update, insert, and delete data.
Each instance of a class entity represents a row within the database table.
When we defined our data model, the LINQ to SQL designer also created a custom Data Context class that provides the main conduit by which we'll query our database and apply updates/changes.
Here are the code blocks below: In this step I will not elaborate more on details because I have already demonstrated this in my previous example here.
The only thing that’s added in the code above is we are setting the Enabled attribute of the Edit and Delete Button to true so that by the time users select certain Customer from the Drop Down List then that’s the time that they can do certain operations like editing and deleting.
Over the last few weeks I've been writing a series of blog posts that cover LINQ to SQL.