private void button1_Click(object sender, EventArgs e) { if (notifi.Text.Trim() == string.Empty || nType.Text.Trim() == string.Empty || about.Text.Trim() == string.Empty) { MessageBox.Show("Empty Fields!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } else { string selected = this.nType.GetItemText(this.nType.SelectedItem); showNotification(notifi.Text, selected); DBconnection ob = new DBconnection(); string messageId = primaryKey.RandomString(6); Message ox = new Message(messageId, notifi.Text, nType.Text); ob.messageDatebase(ox); clear(); } }