title: Going from 2nd form back to the first form in the same instance
body: <p>I have a program that consists of two winforms and three classes, one of which is static.  My first form does some work and has a button that opens the second form.  When the second form opens, the first one closes via this.Visible = false.</p>
  
  <p>I have a button on the second form that I want to take me back to same instance of the first form so that I can input more information if needed.  Any new information would have to be added to the original information so that I can go back to the second form.</p>
  
  <p>Is there a way to do this?  I tried instantiating a new form but of course the previous values were gone.  </p>
  
  <p>Here is the code for my first form to open the second:</p>
  
  <pre><code>//event handler to call Daily Summary form
      private void btnDailySummary_Click(object sender, EventArgs e)
      {
          DailySummaryForm form2 = new DailySummaryForm(); 
          this.Visible = false;
          form2.Show();            
      }
  </code></pre>
  
  <p>Here is the code for my second form to reopen the first:</p>
  
  <pre><code>private void btnRtnToOrderMenu_Click(object sender, EventArgs e)
      {             
          //closes Daily Summary form
          this.Close();
      }
  </code></pre>
  
  <p>I tried doing "OrderForm.Visibile = true" but of course without instantiating a new instance that doesn't work.  I'm at a loss.   </p>