c++CLI event handler's not triggered

I am just getting into c++ CLI and am running into a开发者_运维问答 problem where some event handlers are called and some are not.

here is a list of my event handlers:

    private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) {
             }
    private: System::Void exitToolStripMenuItem_Click(System::Object^  sender, System::EventArgs^  e) {
                 Application::Exit();
             }
private: System::Void aboutToolStripMenuItem_Click(System::Object^  sender, System::EventArgs^  e) {
             MessageBox::Show("Paul Madsen\nLab 13",
                 "About lab 13", MessageBoxButtons::OK,
                 MessageBoxIcon::Asterisk);
         }

private: System::Void textBox1_TextChanged(System::Object^  sender, System::EventArgs^  e) 
         {
             try
             {
                double tmp = Double::Parse(textBox1->Text);
             }
             catch(...)
             {
                 textBox1->ResetText();
             }

         }
private: System::Void textBox2_TextChanged(System::Object^  sender, System::EventArgs^  e) 
         {
             try
             {
                double tmp = Double::Parse(textBox2->Text);
             }
             catch(...)
             {
                 textBox2->ResetText();
             }
         }
private: System::Void textBox1_Enter(System::Object^  sender, System::EventArgs^  e)
         {
             MessageBox::Show("Test",
                 "test", MessageBoxButtons::OK,
                 MessageBoxIcon::Asterisk);
         }
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
             double tmp = (Double::Parse(textBox1->Text) - 32) * 5/9;
             textBox2->Text = System::Convert::ToString(tmp);

         }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
              double tmp = (Double::Parse(textBox1->Text) - 32) * 5/9;
              textBox1->Text = System::Convert::ToString(tmp);

          }

button1_Click works just fine but button2_Click is never triggered even though they are essentially the same. Why is that?

Look back toward the beginning of the source code file, inside InitializeComponent(). You should have no trouble seeing the button1->Click event handler assignment. Do you see the one for button2->Click?

Delete the button in the designer, add it back. Double click it. Or just leave it out, no point in having two buttons doing the same thing.