C#

[lock] marks a statement block as a critical section by obtaining the mutual-exclusion lock for a given object, executing a statement, and then releasing the lock

class Form1 : Form
{
  private Form2 frm2;
  public Form1() { frm2 = new Form2(); }
  // All that other implementation stuff.
  private void button1_Click(object sender, EventArgs e)
  {
    frm2.Show();
  }
  private void button2_Click(object sender, EventArgs e)
  {
    frm2.Hide();
  }

public Form1() <code>{</code> frm2 = new Form2(); <code>}</code>
//This finishes your constructor

//I think you still want this in your constructor as well
{
InitializeComponent();
webBrowser1.AllowNavigation = true;
webBrowser1.IsWebBrowserContextMenuEnabled = true;
webBrowser1.WebBrowserShortcutsEnabled = true;

}


//I think it should be
public Form1()
{
  frm2 = new Form2();
  InitializeComponent();
  webBrowser1.AllowNavigation = true;
  webBrowser1.IsWebBrowserContextMenuEnabled = true;
  webBrowser1.WebBrowserShortcutsEnabled = true;
}

public Form1() { frm2 = new Form2(); }
{
  InitializeComponent();
  webBrowser1.AllowNavigation = true;
  webBrowser1.IsWebBrowserContextMenuEnabled = true;
  webBrowser1.WebBrowserShortcutsEnabled = true;
  <span style="background-color:yellow">frm2 = new Form2();</span>
}