Manage DNS server by C# code

You have to use WMI to invoke the DNSProvider.

This to add a record:

 public void AddARecord(string hostName, string zone, string iPAddress, string dnsServerName)
 {
      ManagementScope scope = 
         new ManagementScope(@"\\" + dnsServerName + "\\root\\MicrosoftDNS");

      scope.Connect();

      ManagementClass cmiClass =
         new ManagementClass(scope, 
                             new ManagementPath("MicrosoftDNS_AType"),
                             null);

     ManagementBaseObject inParams = 
         cmiClass.GetMethodParameters("CreateInstanceFromPropertyData");

     inParams["DnsServerName"] = this.ServerName;
     inParams["ContainerName"] = zone;
     inParams["OwnerName"] = hostName + "." + zone;
     inParams["IPAddress"] = iPAddress;

     cmiClass.InvokeMethod("CreateInstanceFromPropertyData", inParams, null);
}

You can reference the WMI reference and extend this as you need using the methods and classes http://msdn.microsoft.com/en-us/library/ms682123(v=vs.85).aspx

Microsoft exposes it as a POX service, so you could just push XML over the wire to it, using the System.Net stuff & your user credentials.

http://technet.microsoft.com/en-us/library/dd278634.aspx