private void diaryToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Are you sure you want a new diary?\nThis will completely erase your"
            + "old diary?", "New Diary", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);

            if (DialogResult.OK == true)
            {
                txtEntryDate.Text = "";
                txtEntryName.Text = "";
                txtEntryNumber.Text = "";
                txtEntryTime.Text = "";
                rtbEntry.Text = "";
            }
            else if (DialogResult.Cancel == true)
            {
                // Nothing to do since user cancelled.
            }
        }