private void B_Save_Click(object sender, EventArgs e)
        {
            splitToEvents.EventList = splitToEventList.Cast <SplitsToEvents.SplitEvent>().ToList();
            var result = splitToEvents.Verify(splitStates);

            if (result != "")
            {
                MessageBox.Show("Following issues were found:\n" + result, "Notification", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }

            splitToEvents.EventList = splitToEventList.Cast <SplitsToEvents.SplitEvent>().ToList();
            try
            {
                splitToEvents.Save();
                MessageBox.Show("Saved successfully!", "Notification", MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.DialogResult = DialogResult.OK;
                this.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Failed to export to XML:\n" + ex, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }