Çözüldü C# "because it is being used by another process." hatası

private void wc_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e){
    if(e.Error == null){
        var process = Process.Start(program_name);
        process.EnableRaisingEvents = true;
        process.Exited += (_,args) => {
            File.Delete(program_name);
            //Performs on process exited.
        };
    }
    else{
        //Error handling...
    }
}