C#

public bool RenameComputer(string name, string password, string user)
 {
     bool ok = true;
     string mofName = "Rename";

     try
     {
         //Get an input parameters object for this method
         ManagementClass processClass = new ManagementClass("Win32_ComputerSystem");

         object[] methodArgs = { name, password, user};

         for (int i = 0; i < methodArgs.Length; ++i)
             Console.WriteLine("methodArgs[{0}] = {1}", i, methodArgs[i]);

         object retval = processClass.InvokeMethod(mofName, methodArgs);

         Console.WriteLine("InvokeMethod Status {0}, Process ID {1}",
             retval, methodArgs[3]);
     }
     catch (Exception e)
     {
         Console.WriteLine("Exception caught!!!");
         Console.WriteLine("{0}: {1}", e.Source, e.Message);
         ok = false;
     }
     return (ok);
 }

ManagementClass computerSystemClass =
   new ManagementClass("Win32_ComputerSystem");

object[] methodArgs = { name, password, user };

foreach (ManagementObject computerSystem in computerSystemClass.GetInstances())
{
   object retval = computerSystem.InvokeMethod(mofName, methodArgs);
}

ManagementObject computerSystem =
    new ManagementObject("Win32_ComputerSystem.Name='SomeName'");

 SqlConnection conn = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDbFilename=" + Environment.CurrentDirectory + @"\App_Data\CMS.mdf;Integrated Security=True;User Instance=True;");
conn.Open();
          string selectFamilyID = "SELECT Family_Id, Family_Name FROM Families WHERE Family_HouseHold = '" + fullName + "';";
          SqlCommand selectCommand = conn.CreateCommand();
          selectCommand.CommandText = selectFamilyID;
          SqlDataAdapter adapter = new SqlDataAdapter();
          adapter.SelectCommand = selectCommand;
          DataSet myDataSet = new DataSet();
          string dataTableName = "Families";
          adapter.Fill(myDataSet, dataTableName);
          int familyID = 0;
          DataTable table = myDataSet.Tables["Families"];
          foreach (DataRow row in table.Rows)
          {
              familyID = Convert.ToInt32(row["Family_Id"]);
              secondName = Convert.ToString(row["Family_Name"]);
          }