C# dotnetbar two listboxadv sync scroll not working

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i have two ListBoxAdv1 and ListBoxAdv2 and i want sync them scroll i used this code and just shown scrolled up or down but didn't update screen and items in another ListBoxAdv

what should i do? please help

What I have tried:

i try this:

private void listBoxAdv1_Scroll(object sender, ScrollEventArgs e)
{
       listBoxAdv2.VScrollBar.Value = listBoxAdv1.VScrollBar.Value;
}
private void listBoxAdv2_Scroll(object sender, ScrollEventArgs e)
{
      listBoxAdv1.VScrollBar.Value = listBoxAdv2.VScrollBar.Value;
}

and this:

private void listBoxAdv1_Scroll(object sender, ScrollEventArgs e)
{
               listBoxAdv2.Focus();
                   ScrollEventArgs scrollEventArgs = new ScrollEventArgs(ScrollEventType.SmallIncrement, e.OldValue, e.NewValue, ScrollOrientation.VerticalScroll);
                  listBoxAdv2_Scroll(listBoxAdv2, scrollEventArgs);
}
private void listBoxAdv2_Scroll(object sender, ScrollEventArgs e)
{
     
}

Posted 28-May-18 19:53pm

Member 13801581

Updated 28-May-18 21:08pm

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Member 13801581 · Answer 1 · 2018-05-28T21:09:00

thanks for many response!
i find solution:

bool Scrolling = true;
       private void listBoxAdv1_Scroll(object sender, ScrollEventArgs e)
       {
           if (Scrolling == true)
           {
               Scrolling = false;
               listBoxAdv2.BeginUpdate();
               listBoxAdv2.AutoScrollPosition = new Point(listBoxAdv1.AutoScrollPosition.X, listBoxAdv1.AutoScrollPosition.Y);
               listBoxAdv2_Scroll(sender, e);
               listBoxAdv2.EndUpdate();
               Scrolling = true;
           }
       }

       private void listBoxAdv2_Scroll(object sender, ScrollEventArgs e)
       {
           if (Scrolling == true)
           {
               Scrolling = false;
               listBoxAdv1.BeginUpdate();
               listBoxAdv1.AutoScrollPosition = new Point(listBoxAdv2.AutoScrollPosition.X, listBoxAdv2.AutoScrollPosition.Y);
               listBoxAdv1_Scroll(sender, e);
               listBoxAdv1.EndUpdate();
               Scrolling = true;
           }
       }