OpenTween.TweenMain.UrlConvertAutoToolStripMenuItem_Click C# (CSharp) Method

        private async void UrlConvertAutoToolStripMenuItem_Click(object sender, EventArgs e)
        {
            if (!await UrlConvertAsync(this._cfgCommon.AutoShortUrlFirst))
            {
                MyCommon.UrlConverter svc = this._cfgCommon.AutoShortUrlFirst;
                Random rnd = new Random();
                // 前回使用した短縮URLサービス以外を選択する
                do
                {
                    svc = (MyCommon.UrlConverter)rnd.Next(System.Enum.GetNames(typeof(MyCommon.UrlConverter)).Length);
                }
                while (svc == this._cfgCommon.AutoShortUrlFirst || svc == MyCommon.UrlConverter.Nicoms || svc == MyCommon.UrlConverter.Unu);
                await UrlConvertAsync(svc);
            }
        }