OpenTween.OpenURL.OK_Button_Click C# (CSharp) Method

        private void OK_Button_Click(object sender, EventArgs e)
        {
            if (UrlList.SelectedItems.Count == 0)
            {
                this.DialogResult = DialogResult.Cancel;
            }
            else
            {
                _selUrl = UrlList.SelectedItem.ToString();
                this.DialogResult = DialogResult.OK;
            }
            this.Close();
        }