title: ASP.NET text box alert
body: <p>I'd like to be able to have a text box alert in my C# web application if a file exists on a server.  Any ideas? New to C# here. So for example, if I have <em>text.txt</em> (and I know that it's always going to be <em>text.txt</em>) that someone drops into a folder onto a file server, my web application page will alert me using the timer (or something like that). </p>