title: unable to cascade or title horizontal ChildForms on Panel Control of mdi parent form using LayoutMdi
body: <p>I have multiple child forms on Panel control of MDI parent Form. I can open child forms form1, form2 and so on use below method</p>
  <pre><code>Private Sub ShowChildForm(Of Myform As {Form, New})()
      Try
          Dim childForm As Form = PanelPrinciple.Controls.OfType(Of Myform)().FirstOrDefault()
          If childForm Is Nothing Then
              childForm = New Myform()
              childForm.MdiParent = Me
              childForm.Parent = PanelPrinciple
              PanelContent.Controls.Add(childForm)
              PanelContent.Tag = childForm
              childForm.Show()
              childForm.BringToFront()
          Else
              childForm.BringToFront()
          End If
  
      Catch ex As Exception
  
      End Try
  End Sub
  </code></pre>
  <p>I want to Cascade and Tile Horizontal all opened child forms using LayoutMdi as below which is not working.</p>
  <pre><code>LayoutMdi(System.Windows.Forms.MdiLayout.TileHorizontal)
  </code></pre>
  <p>I would like to seek for help here.
  it would be appreciated if anyone could help and advice me.
  Thank you.</p>