title: closing parent form from child form
body: <p>I have a problem with my forms. I have a parent and child form. In child form I have a button. I want to close parent window using button and create new instance parent form and shows new parent form. 
  Anyone can help me?
  I tried </p>
  
  <pre><code>private Form1 m_parent;
  
          public Form2(Form1 frm1)
          {
              InitializeComponent();
              m_parent = frm1;
          }
  </code></pre>
  
  <p>and 
  after that m_parent.Close(), but only what I got is both forms was closed and this is it. After m_parent i create new instance but my application was closed.</p>