private void btm_Exit_Click(object sender, EventArgs e)
        {
            wnDm wdm = new wnDm();

            if (!txt_Title.Text.ToString().Equals("") && !txt_Contents.Text.ToString().Equals(""))
            {
                title    = txt_Title.Text.ToString();
                contents = txt_Contents.Text.ToString();
                int rsNum = wdm.insert_Schedule(date.ToString(), title, contents);
                if (rsNum == 0)
                {
                    this.Close();
                }
            }
            else if (!txt_Title.Text.ToString().Equals("") && txt_Contents.Text.ToString().Equals(""))
            {
                title    = txt_Title.Text.ToString();
                contents = txt_Contents.Text.ToString();
                int rsNum = wdm.insert_Schedule(date.ToString(), title, contents);
                if (rsNum == 0)
                {
                    this.Close();
                }
            }
            else if (txt_Title.Text.ToString().Equals("") && !txt_Contents.Text.ToString().Equals(""))
            {
                MessageBox.Show("TITLE를 적어주세요");
                return;
            }
            else
            {
                wdm.deleteSchdule(date);
                this.Close();
            }
        }