private void applyTimeChange(TextBox textbox) { DateTime date = this.parseTime(textbox); String iso8601String = date.ToString("yyyy-MM-ddTHH:mm:sszzz"); String utf8String = this.getUTF8String(iso8601String); if (textbox == this.textBoxStartTime) { KopsikApi.kopsik_set_time_entry_start_iso_8601(KopsikApi.ctx, timeEntry.GUID, utf8String); } else if (textbox == this.textBoxEndTime) { KopsikApi.kopsik_set_time_entry_end_iso_8601(KopsikApi.ctx, timeEntry.GUID, utf8String); } }