CODE:

             System::Diagnostics::ProcessStartInfo^ userProcess
               = gcnew System::Diagnostics::ProcessStartInfo;

             // nslookup
             userProcess->FileName = L"cmd.exe";
             userProcess->Arguments = 
               L"/C nslookup google.co.jp > dummy1.txt";
             System::Diagnostics::Process::Start(userProcess);

             // ping
             userProcess->FileName = L"cmd.exe";
             userProcess->Arguments = 
               L"/C ping google.co.jp > dummy2.txt";
             System::Diagnostics::Process::Start(userProcess);

CODE:

             char buf[256];
             FILE *fp;

             fp = fopen("dummy1.txt", "r");
             while(fgets(buf, 256, fp)) {
               this->textBox2->Text += 
                 System::Runtime::InteropServices::Marshal
                 ::PtrToStringAnsi(IntPtr(buf));
             }
             fclose(fp);

             fp = fopen("dummy2.txt", "r");
             while(fgets(buf, 256, fp)) {
               this->textBox2->Text += 
                 System::Runtime::InteropServices::Marshal
                 ::PtrToStringAnsi(IntPtr(buf));
             }
             fclose(fp);