FileSystemWatcher issue in windows application

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C#

C#4.0

Dear Friends,

I have a windows application which is using a filesystemwatcher which listens to the folder and when ever the xml file created, it will parse the file and inserts to the database.

The problem is it works fine when the first file is created, and when the second file created, it shows error, "The process cannot access the file because it is being used by another process".

I cannot dispose the filesystemwatcher object because it should listen to the folder always.

I have posted the code below. Kindly help me to resolve the issue.

private void button1_Click(object sender, EventArgs e)
        {
            ListenToFolder(@"F:\EscherData\");
        }

        private void ListenToFolder(string path)
        {
            try
            {

                    FileSystemWatcher fs = new FileSystemWatcher(path);

                    fs.IncludeSubdirectories = false;


                    fs.Created += new FileSystemEventHandler(OnFileCreate);


                    fs.EnableRaisingEvents = true;





            }
            catch (Exception e)
            {

                //MessageBox.Show(e.ToString());
            }
        }

        private void OnFileCreate(object e, FileSystemEventArgs ev)
        {

            try
            {

                ReadXmlData(ev.FullPath);


            }
            catch (Exception ex)
            {
               MessageBox.Show(ex.ToString());
            }






        }