The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 5: FILESTREAM with ASP.NET and SilverlightAlternative to the Stream.CopyTo() methodThe copy of the stream content in this lab is done using the Stream.CopyTo() method, which wasintroduced with the .NET Framework Version 4. If your application targets an older Framework version,refer to the other code samples in this chapter for a way of copying the contents of one stream to anotherusing a 4 KB buffer (which is what Stream.CopyTo() also does).Creating an HTTP handler to serve imagesThe concept of showing the web page in a web browser will be very similar to theone used in Lab 6, but the code will look different. There will be no reference to anySQL types at all; any data access is completely abstracted in the data access layer (theDataAccess project).To drive this point home, in the Presentation web application, remove the reference tothe System.Data assembly. Then we will also modify the web.config file to includethe database connection string. Refer to Listing 5-3 for this code. In the final version ofthe application, this connection string can be removed. Because we are taking a stepby-stepapproach to this implementation, we will initially test the code whereby theweb application calls into the data access component directly, and the web application'sconfiguration file will provide the required connection string information.209