private void txtFormat_TextChanged(object sender, EventArgs e)
        {
            var helper = new CustomFileNameHelper();

            txtPreview.Text = helper.CombineFileName(txtFormat.Text, "银魂", "第99话", "5", "flv", "av54321", "2", "", "",
                                                     DateTime.Now.ToString("yyyyMMdd"), DateTime.Now.ToString("hhmmss"));
        }
 private void txtFormat_TextChanged(object sender, EventArgs e)
 {
     var helper = new CustomFileNameHelper();
     txtPreview.Text = helper.CombineFileName(txtFormat.Text, "银魂", "第99话", "5", "flv", "ac54321", "2", "", "", DateTime.Now.ToShortDateString(), DateTime.Now.ToShortTimeString());
 }