title: Open Child Form in Parent Form's Panel from Another Child Form
body: <p>i am new in c# windows application learning</p>
  <p>i have 3 form.
  <strong>main form, form menu, child form</strong></p>
  <p>in <strong>main form</strong> when i click on <strong>button1</strong>, <strong>form menu</strong> is show in <strong>1st panel</strong>.</p>
  <pre><code>this code in main form.....this work properly for me... if anyone have better then this then suggest me. 
  
  private void button1_Click(object sender, EventArgs e)
          {
              bool IsOpen = false;
              foreach (Form frmchild in Application.OpenForms)
              {
                  if (frmchild.Text == &quot;Child Form&quot;)
                  {
                      IsOpen = true;
                      frmchild.Close();
                      break;
                  }
              }
              if (IsOpen == false)
              {
                  child form cf = new child form();
                  cf.Owner = this;    //main form is owenr
                  cf.Show();
                  cf.Location
                      = new Point(button1.Left + 37, button1.Height + button1.Top + 4);
              }
          }
  </code></pre>
  <p><strong>main form</strong> have <strong>2 panel</strong>, <strong>1st</strong> is small and dock in top. <strong>2nd</strong> is main panel (dock = fill) where i want to dock all <strong>child form</strong>.</p>
  <p>in <strong>form menu</strong> i have button and when i click on i want to <strong>open child form in main form 2nd panel</strong>.</p>
  <p><code>please help me to open child form in main form's panel when i click button in another child form in c# language.</code></p>
  <p>please help me.</p>