How I Do Please Help Me Out

Hello

You can write a program to monitor the file's last modification.
System.IO.FileSystemWatcher can be the ideal class to work with.

For example

string filePath = @"[directory of your excel file]";
           FileSystemWatcher watcher = new FileSystemWatcher();

           watcher.Path = filePath;
           watcher.NotifyFilter = NotifyFilters.LastWrite;

           watcher.Filter = "[name of your excel file ex. myexcel.xls]";
           watcher.Changed += new FileSystemEventHandler(OnChanged);
           watcher.EnableRaisingEvents = true;

Hope this will help you.

Hey vick, im in south africa creating more or less the same project, m company uses excel and sql database seeing that it is a client application, point of the story is,Do you have all the data you need?

which market are you targeting? forex, jse local?

so things to remember is that if you want a life feed updating a project there is royalties bound to it, also i must ask to answer your update question because TanvirRaihan basically answered your question , just remember to implement the correct references.

you must keep in mind that if this is a per second market data application that the downloading and updating stream will be a hell of a a process, so you might want to run them as background processing classes, both separate so that your connection does not clash, if this is like 15 min delay, it makes it easier but it would still be better to do this in background processing(bet you you are missing delphi now ;))

please return with all the details and i can work on a demo for you.