private void Net_ComboBox_Card_SelectedValueChanged(object sender, EventArgs e) { List <string> IPInfo = NetInfo.GetIPInfo(CardInfos[Net_ComboBox_Card.SelectedIndex]["IP"], CardInfos[Net_ComboBox_Card.SelectedIndex]["Mask"]); Net_Label_IPPart.Text = string.Format("{0}--{1}", IPInfo[0], IPInfo[1]); Net_Label_IPMask.Text = CardInfos[Net_ComboBox_Card.SelectedIndex]["Mask"]; }