How to acquire image with opencv and Windows Form Application

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Thank you for your answer my Bulgarian friend. How to make this kind of checking of the timer? This code below is working better for me but when I would like to start the application again I saw that the .exe file was not stopped. May be something is wrong with my timer. What is the problem?

private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {

capture = cvCaptureFromCAM(0);

timer1->Start();

         }

private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {

             frame = cvQueryFrame(capture);

pictureBox1->Image = gcnew //replacement of cvShowImage

System::Drawing::Bitmap(frame->width,frame->height,frame->widthStep,

System::Drawing::Imaging::PixelFormat::Format24bppRgb,(System::IntPtr) frame->imageData);

pictureBox1->Refresh(); }

private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {

                 timer1->Stop();
             Application::Exit();
         }

     private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
        timer1->Interval=100; \\Time interval in miliseconds
        timer1->Start();
     }
     private: System::Void timer1_Tick(System::Object^  sender, System::EventArgs^  e) {
            MessageBox::Show("The calculations are complete", "My Application", MessageBoxButtons::OKCancel, MessageBoxIcon::Asterisk);
     }