Bad flicker while scrolling down

2 posts, 1 answers
  1. Franco
    Franco avatar
    27 posts
    Member since:
    Apr 2010

    Posted 05 Sep 2011 Link to this post

    Good afternoon.
        I have a problem with RadPanelBar. I use VB Express 2008.
    I create a new WinForm project and add a RadPanelBar control. Dock = True, GroupStyle = ExplorerBarStyle.
    This is the code:
    Imports Telerik.WinControls.UI
      
    Public Class Form1
      Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim rpbge As RadPanelBarGroupElement
      
        For i As Integer = 0 To 10
          rpbge = New RadPanelBarGroupElement
          rpbge.Caption = "Group" & i
          rpbge.EnableHostControlMode = True
          RadPanelBar1.Items.Add(rpbge)
        Next
      
        Dim rlc As New RadListControl
        rlc.Height = 2
        rlc.Width = rpbge.ContentPanel.ClientSize.Width
        rlc.Anchor = AnchorStyles.Left Or AnchorStyles.Right Or AnchorStyles.Top
        rpbge.ContentPanel.Controls.Add(rlc)
      
        rpbge.Expanded = True
      End Sub
    End Class

    Now:
    - Run the project and scroll down with the vertical scroll bar.
    - Collapse and Expand the last group (Group10).
    - Now try to scroll down again with the vertical scroll bar and you'll see the flicker.
    Is there any solution?
    Thank you in advance.
    Gianfranco
  2. Answer
    Stefan
    Admin
    Stefan avatar
    2891 posts

    Posted 08 Sep 2011 Link to this post

    Hi Franco,

    I confirm that this issue appears when using the RadPanelBar control. This is an obsolete control and we plan to remove it from our suite. We no longer support it. You can use the RadPageView control instead. For more information about the upgrade process, please refer to the following help article: http://www.telerik.com/help/winforms/pageview-upgrading-to-radpageview.html.
     
    If you need further assistance, please do not hesitate to contact us.

    Regards,
    Stefan
    the Telerik team

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