C # Call WMI to change the local network IP settings

The following is a small program interface for changing the network IP interface based on the above ipprovider.

Because the network configuration is different between the home and the company, and I bring my notebook back and forth with the company at home. this leads to frequent setting of different IP addresses and gateway data. After a while, I felt very annoyed as a programmer. why don't we take advantage of our knowledge to get lazy? Especially a lazy person like me...

Because the network IP settings involve hardware, C # does not have a ready-made interface to call. we can only call the API or WMI. This system provides a bridge for us .. in the WMI library, the management class "win32_networkadapterconfiguration" is used to manage network configurations. the IP address, DNS, and gateway settings are basically included here...

It is easy to Use WMI in C. the C # implementation code is provided below. Haha, my text expression capability is poor, so I will not talk much about it. The amount of code is very small and it should look very simple:

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UsingSystem;UsingSystem. collections;UsingSystem. text;UsingSystem. Management;UsingSystem. Text. regularexpressions;NamespaceKingthy. Windows. ipchanger. Providers {/// <Summary>    /// Summary of ipprovider.    /// </Summary>    Public ClassIpprovider {PublicIpprovider (){//            // Todo: add the constructor logic here            //}/// <Summary>        /// Set DNS        /// </Summary>        /// <Param name = "DNS"> </param>        Public Static VoidSetdns (String[] DNS) {setipaddress (Null,Null,Null, DNS );}/// <Summary>        /// Configure the Gateway        /// </Summary>        /// <Param name = "getway"> </param>        Public Static VoidSetgetway (StringGetway) {setipaddress (Null,Null,New String[] {Getway },Null);}/// <Summary>        /// Configure the Gateway        /// </Summary>        /// <Param name = "getway"> </param>        Public Static VoidSetgetway (String[] Getway) {setipaddress (Null,Null, Getway,Null);}/// <Summary>        /// Set the IP address and mask        /// </Summary>        /// <Param name = "ip"> </param>        /// <Param name = "submask"> </param>        Public Static VoidSetipaddress (StringIP,StringSubmask) {setipaddress (New String[] {IP },New String[] {Submask },Null,Null);}/// <Summary>        /// Set the IP address, mask, and gateway        /// </Summary>        /// <Param name = "ip"> </param>        /// <Param name = "submask"> </param>        /// <Param name = "getway"> </param>        Public Static VoidSetipaddress (StringIP,StringSubmask,StringGetway) {setipaddress (New String[] {IP },New String[] {Submask },New String[] {Getway },Null);}/// <Summary>        /// Set the IP address, mask, gateway, and DNS        /// </Summary>        /// <Param name = "ip"> </param>        /// <Param name = "submask"> </param>        /// <Param name = "getway"> </param>        /// <Param name = "DNS"> </param>        Public Static VoidSetipaddress (String[] IP,String[] Submask,String[] Getway,String[] DNS) {managementclass WMI =NewManagementclass ("Win32_networkadapterconfiguration"); Managementobjectcollection MOC = WMI. getinstances (); managementbaseobject inpar =Null; Managementbaseobject outpar =Null;Foreach(Managementobject MoInMOC ){// Skip this step if no network device with IP settings Enabled                If(! (Bool) Mo ["Ipenabled"])Continue;// Set the IP address and mask                If(IP! =Null& Submask! =Null) {Inpar = Mo. getmethodparameters ("Enablestatic"); Inpar ["IPaddress"] = IP; inpar ["Subnetmask"] = Submask; outpar = Mo. invokemethod ("Enablestatic", Inpar,Null);}// Set the gateway address                If(Getway! =Null) {Inpar = Mo. getmethodparameters ("Setgateways"); Inpar ["Defaultipgateway"] = Getway; outpar = Mo. invokemethod ("Setgateways", Inpar,Null);}// Set the DNS address                If(DNS! =Null) {Inpar = Mo. getmethodparameters ("Setdnsserversearchorder"); Inpar ["Dnsserversearchorder"] = DNS; outpar = Mo. invokemethod ("Setdnsserversearchorder", Inpar,Null);}}}/// <Summary>        /// Enable the DHCP server        /// </Summary>        Public Static VoidEnabledhcp () {managementclass WMI =NewManagementclass ("Win32_networkadapterconfiguration"); Managementobjectcollection MOC = WMI. getinstances ();Foreach(Managementobject MoInMOC ){// Skip this step if no network device with IP settings Enabled                If(! (Bool) Mo ["Ipenabled"])Continue;// Reset DNS to nullMo. invokemethod ("Setdnsserversearchorder",Null);// Enable DHCPMo. invokemethod ("Enabledhcp",Null);}}/// <Summary>        /// Determine whether the IP address format is correct        /// </Summary>        /// <Param name = "ip"> </param>        /// <Returns> </returns>        Public Static BoolIsipaddress (StringIP ){String[] Arr = IP. Split ('.');If(ARR. length! = 4)Return False;StringPattern =@ "\ D {1, 3 }";For(IntI = 0; I <arr. length; I ++ ){StringD = arr [I];If(I = 0 & D ="0")Return False;If(! RegEx. ismatch (D, pattern ))Return False;If(D! ="0") {D = D. trimstart ('0');If(D ="")Return False;If(Int. Parse (d)> 255)Return False;}}Return True;}}}

【Reprinted from :http://www.chenjiliang.com/Article/View.aspx?ArticleID=3860&TypeID=84】