title: Button in Form 4 doesn't fire in Form 1
body: <p>The objective is to click Button1 in FORM4 which then allows for WebBrowser1 in FORM1 to navigate to that site. </p>
  
  <p>I Keep getting this error:
  Error   1   'NO1.Form4' does not contain a constructor that takes 0 arguments   </p>
  
  <p>Form 1 </p>
  
  <pre><code>    Form4 mForm;
      private void button92_Click(object sender, EventArgs e)
      {
  
            if (mForm == null) 
            {
            mForm = new Form4();
            mForm.FormClosed += new FormClosedEventHandler(mForm_FormClosed);
            mForm.Show();
               }
          else 
            {
           if (mForm.WindowState == FormWindowState.Minimized)
             mForm.WindowState = FormWindowState.Normal;
            mForm.Focus();
            }
  }
  
  void mForm_FormClosed(object sender, FormClosedEventArgs e)
  {
    mForm = null;
  }
  </code></pre>
  
  <p>Form 4</p>
  
  <pre><code>        public partial class Form4 : Form
  
          {
  
     private Form1 m_parent;
      public Form4(Form1 frm1)
      {
  
          InitializeComponent();
          m_parent = frm1;
  
      }
  
  
  
      private void button1_Click(object sender, EventArgs e)
      {
          m_parent.webBrowser1.Navigate("google.com");
      }
  
      private void Form4_Load(object sender, EventArgs e)
      {
  
  
      }
  }
  </code></pre>