How can I use LINQ to SQL in C#?

How can I use LINQ to SQL in C#?

You can use LINQ to SQL to query databases in C#. First, ensure you have a data context class that represents your database.

What is a data context class?

A data context class is a central class that manages the database connection and is used to query and save data.

Can you show me a simple example?

Sure! Here's a basic example:

using (var context = new YourDataContext())
{
    var results = from item in context.YourTable
                  where item.Property == "value"
                  select item;
}

What if I want to insert data?

To insert data, create a new instance of your entity, add it to the context, and then call SubmitChanges():

var newItem = new YourEntity { Property = "value" };
context.YourTable.InsertOnSubmit(newItem);
context.SubmitChanges();