Cell Click & Scrolling Problem | Infragistics Forums

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Cell Click & Scrolling Problem

Justin posted over 16 years ago

I have a WinGrid that is on a custom control. Several instances of the control are added to a flow layout panel that has a vertical scrollbar.

My problem is that when I click on a cell in my grid (to add a new row) this causes my flow layout panel to scroll in order, I presume, to show my entire custom control. Unfortunatly it doesn;t do a very good job of this and the bottom of the control gets cut-off even if it was entirely visible beforehand.

I'm sure it is the WinGrid causing this because if I activate any other controls on my custom control it stays exactly where it is.

I have attached an image showing what happens. The upper Window in the image show the initial state and a red circle showing where the user is going to click. The lower Window shows what happens after the click when the control gets auto-scrolled downwards cutting off the bottom of the grid.

Is there any way to stop this? Or is there something I'm doing wrong?

Thanks

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Offline Mike Saltzman posted over 16 years ago

Hi,
    What's a "flow layout panel"? Is this just a panel with an UltraFlowLayoutManager?
    If that's the case the my guess is that this is not related to the ULtraFlowLayoutManager, that's it the panel that's doing it. If you have an Inbox Panel with AutoScroll set to true, then it tries to keep the active control in view. So if you tab from one control to another, it tries to scroll that control into view so the user can see it. When you click into a grid cell and it does into edit mode, the grid creates a child TextBox control and places it over the cell for editing. So the panel may be scrolling so that this control is entirely in view.
    I can't think of any way around this. The panel doesn't allow you to turn this functionality off as far as I know.
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M posted over 15 years ago in reply to Mike Saltzman

I've observed this problem as well. This is a quick Panel wrapper solution that surpresses the ScrollToControl response of the UltraGrid. It stops the grid from autoscrolling to the top of the ScrollableControl when the grid gets focus.
public class ScrollPanel : Panel
{
public int CurrentScroll
{
   get{
         int scr = AutoScrollPosition.Y;
          if (scr >= 0)
             scr = -VerticalScroll.Value;
         return scr;
    }
}
protected override System.Drawing.Point ScrollToControl(Control activeControl)
{
if (activeControl is Infragistics.Win.UltraWinGrid.UltraGrid)
{
   // suppress
    return new System.Drawing.Point(0, CurrentScroll);
  }
else
{
    return base.ScrollToControl(activeControl);
  }
}
}
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