The Art of SQL Server FILESTREAM - Red Gate Software

Chapter 5: FILESTREAM with ASP.NET and Silverlight}if (ms != null && ms.Length > 0){context.Response.AddHeader("content-length",ms.Length.ToString());// Reset the current position in the MemoryStreamms.Position = 0;// .NET 4.0 and later method onlyms.CopyTo(context.Response.OutputStream);}Listing 5-20:Updated ProcessRequest() method using a WCF call to obtain the FILESTREAM data.Because the interface definition of IItemData matches that of the ItemData class weused to call, there is no difference in the code beyond the creation of the channel. Inessence, we have replaced the call to the constructor of the ItemData class with a WCFcall over TCP.Be sure to make the URI of the EndpointAddress in this code match up with theURI created in the console application. If you will be running this code actually acrossdifferent machines, replace localhost with the name or IP address of the computerrunning the WCF service. To avoid hard-coding the name or IP address of the server,the WCF client configuration can also be created in the web.config file, but that is notdemonstrated here.Testing the application from Visual StudioTo test this code from Visual Studio, first right-click the ConsoleHost project andselect Debug, Start new instance. This will start the console application and, with it,the WCF service. Next, right-click the web application and start a new instance of it, alsoin debug mode.215