The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 4: FILESTREAM with Entity Framework and LINQ to SQLLab 3: FILESTREAM and LINQ to SQLThis lab presents a very basic example that will help you to get started writing applicationsthat use LINQ to SQL classes to access the FILESTREAM data. Just as we saw withthe default EF approach in Lab 2a, LINQ to SQL also accesses FILESTREAM data throughT-SQL interfaces only; it is not capable of accessing the FILESTREAM data using Win32or Managed APIs.To complete this lab, we will follow the procedure below.1. Create a console application project.2. Add a LINQ to SQL class object to the project.3. Create a LINQ to SQL wrapper class for the Items table.4. Use LINQ to SQL to add a new row with a FILESTREAM value to the table.5. Query the table using LINQ to SQL and retrieve FILESTREAM data.Creating a new console application projectLet's get started. Open Visual Studio, and create a new console application project byselecting File | New | Project as demonstrated in the previous labs.Adding a LINQ to SQL classThe next step is to add a LINQ to SQL class to the project. Right-click on the project inthe Solution Explorer and select Add | New Item. Then, in the Add New Item dialog box,select LINQ to SQL Classes, and rename the class to NorthPoleDB (Figure 4-14).158