获取电脑信息

        private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode root = new TreeNode("mycomputer");
            treeView1.Nodes.Add(root);
            IDictionary<string, string> KeyValue = GetKeyValue();
            foreach (string key in KeyValue.Keys)
            {
                TreeNode tn = new TreeNode(key);
                tn.Name = KeyValue[key];
                root.Nodes.Add(tn);
            }

            treeView1.AfterSelect += (o1, e1) =>
            {
                if (treeView1.SelectedNode.Text == "mycomputer") return;
                listBox1.Items.Clear();
                ManagementObjectSearcher search = new ManagementObjectSearcher("select * from " + treeView1.SelectedNode.Name);
                foreach (ManagementObject mo in search.Get())
                {
                    foreach (PropertyData pd in mo.Properties)
                    {
                        if (pd.Value != null && pd.Value.ToString() != "")
                        {
                            string str = pd.Name + "：";
                            switch (pd.Value.GetType().ToString())
                            {

                                case "System.String[]":
                                    foreach (string s in (string[])pd.Value)
                                    {
                                        str += s + " ";
                                    }
                                    str += "(System.String[])";
                                    break;
                                case "System.UInt16[]":
                                    foreach (UInt16 i in (UInt16[])pd.Value)
                                    {
                                        str += i.ToString() + " ";
                                    }
                                    str += "(System.UInt16[])";
                                    break;
                                default: str += pd.Value.ToString(); break;
                            }

                            listBox1.Items.Add(str);
                        }
                    }
                }
            };


            //Microsoft.VisualBasic.Devices.ComputerInfo computer = new Microsoft.VisualBasic.Devices.ComputerInfo();
            //listBox1.Items.Add(computer.AvailablePhysicalMemory / 1024 / 1024);
            //listBox1.Items.Add(computer.AvailableVirtualMemory / 1024 / 1024);
            //listBox1.Items.Add(computer.InstalledUICulture);
            //listBox1.Items.Add(computer.OSFullName);
            //listBox1.Items.Add(computer.OSPlatform);
            //listBox1.Items.Add(computer.OSVersion);
            //listBox1.Items.Add(computer.TotalPhysicalMemory / 1024 / 1024);
            //listBox1.Items.Add(computer.TotalVirtualMemory / 1024 / 1024);
        }


        public static IDictionary<string, string> GetKeyValue()
        {
            IDictionary<string, string> iDic = new Dictionary<string, string>();

            iDic["Windows用户"] = "Win32_UserAccount";

            iDic["用户组别"] = "Win32_Group";

            iDic["当前进程"] = "Win32_Process";

            iDic["系统服务"] = "Win32_Service";

            iDic["系统驱动"] = "Win32_SystemDriver";

            iDic["中央处理器"] = "Win32_Processor";

            iDic["主板"] = "Win32_BaseBoard";

            iDic["BIOS信息"] = "Win32_BIOS";

            iDic["显卡"] = "Win32_VideoController";

            iDic["音频设备"] = "Win32_SoundDevice";

            iDic["物理内存"] = "Win32_PhysicalMemory";

            iDic["磁盘"] = "Win32_LogicalDisk";

            iDic["网络适配器"] = "Win32_NetworkAdapter";

            iDic["网络协议"] = "Win32_NetworkProtocol";

            iDic["打印与传真"] = "Win32_Printer";

            iDic["键盘"] = "Win32_Keyboard";

            iDic["鼠标"] = "Win32_PointingDevice";

            iDic["串口"] = "Win32_SerialPort";

            iDic["IDE控制器"] = "Win32_IDEController";

            iDic["软驱控制器"] = "Win32_FloppyController";

            iDic["USB控制器"] = "Win32_USBController";

            iDic["SCSI控制器"] = "Win32_SCSIController";

            iDic["PCMCIA卡控制器"] = "Win32_PCMCIAController";

            iDic["1394控制器"] = "Win32_1394Controller";

            iDic["即插即用设备"] = "Win32_PnPEntity";

            return iDic;
        }