Using context.Database.Log in MVC web app

Using a delegate allows you to do write any function taking a string. As a very simple logging to a file, you could do the following:

context.Database.Log = message => File.AppendText("C:\\mylog.txt").WriteLine(message);

In a web environment, you may wish to use Trace to log this information:

context.Database.Log = message => Trace.WriteLine(message);

You can see more examples of using delegates on the MSDN page on Anonymous Functions.

To write your logs to a file, try this:

using (var context = new MyDbContext())
{
    var logFile = new StreamWriter("C:\\temp\\log.txt");
    context.Database.Log = logFile.Write;

    // Execute your queries here
    // ....

    logFile.Close();
}

You can print it in Debug window:

dbContext.Database.Log = message => Debug.Write(message);