Question

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C# get file change events

i want to track a specific file size when it reach a specific size using C#
is there a way to add event handler on file size change or do i need to run an infinite process in thread that keeps checking the file size ?
thanks

Answer 1

Use the FileSystemWatcher to watch for changes to your file. When it changes, get the size. For example:

var fsw = new FileSystemWatcher(@"C:\pathtoyourfile");
fsw.Changed += TheFileChanged;


private void TheFileChanged(object sender, FileSystemEventArgs e)
{
    if (e.ChangeType == WatcherChangeTypes.Changed)
    {
        var info = new FileInfo(e.FullPath);
        var theSize = info.Length;
    }
}

When you are done watching for changes, dispose of your FileSystemWatcher.