Hello Tai,

Our developer finished reviewing in UltraGrid, when moving up and down using arrow keys, UltraGrid moves left and right issue.

The cause of this behavior in the attached sample is that the grid is using RowLayouts and in RowLayout mode the layout of the cell is extremely flexible. This sample has a very simple layout with the columns arranged in a single horizontal line, but the layout could include cells that overlap, multiple levels, nested groups, etc. It is therefore nearly impossible for the grid to determine which cell the arrow keys should navigate to in any given arbitrary layout. So it doesn't try.
 
It’s left to the developer to handle the keyboard navigation based on their layout. In this case, since the layout is so simple, this is very easy to do. For example, you can write something like this to handle the keyboard navigation:
 

        private void ultraGrid1_BeforePerformAction(object sender, Infragistics.Win.UltraWinGrid.BeforeUltraGridPerformActionEventArgs e)
        {
            switch (e.UltraGridAction)
            {
                case Infragistics.Win.UltraWinGrid.UltraGridAction.AboveCell:
                case Infragistics.Win.UltraWinGrid.UltraGridAction.BelowCell:
                    var grid = (UltraGrid)sender;                   
                    var activeCell = grid.ActiveCell;
                    if (null == activeCell)
                        return;
                    var activeRow = activeCell.Row;
                    SiblingRow siblingRowDirection = e.UltraGridAction == Infragistics.Win.UltraWinGrid.UltraGridAction.BelowCell
                        ? SiblingRow.Next
                        : SiblingRow.Previous;
                    var siblingRow = activeRow.GetSibling(siblingRowDirection);
                    if (null != siblingRow)
                    {
                        siblingRow.Cells[activeCell.Column].Activate();
                        e.Cancel = true;
                    }
                    break;
            }
        }
Please let me know if I may be of further assistance.

Sincerely,
Sahaja Kokkalagadda
Associate Software Developer