Hi, I have found a solution to this now. The if conditon needs to be,

if ((drawParams.Element is SummaryValueUIElement)
                && (drawParams.Element.GetContext(typeof(SummaryValue)) != null)) 

Hope this helps others.

Jay 

I have found a solution to dynamically update an UltraGridCell's BackColor depending on the direction of change of it's value, and using a timer fade the colour back to the original colour. I would also like to do this for Summary row cells. In GetPhasesToFilter what element is associated with drawing a summary value's background? I read that for an UltraGridCell this is the EmbeddableUIElementBase but his doesn't work for summary values.

This is my code so far:

if ((drawParams.Element is TextUIElementBase)
    && (drawParams.Element.GetContext(typeof(SummaryValue)) != null))
{
    SummaryValue aSummaryValue = (SummaryValue)drawParams.Element.GetContext(typeof(SummaryValue));
    if (aSummaryValue.Value is decimal)
    {
        return DrawPhase.BeforeDrawBackColor;
    }
}

return DrawPhase.None;

Thanks in advance

Jay 

I am also looking to do this. I have created a DrawFilter to set the background colour. However coparing the cell current value and original value does not behave as I expected.

OriginalValue is never updated from when it was first set.

1) Grid is read only

2) DataSource is a DataSet

3) DataSource is only updated through code 

  protected virtual void SetCellBackColour(UltraGridCell aCell, ref UIElementDrawParams drawParams)
        {
            double newValue = (double)aCell.Value;
            double origValue = (double)aCell.OriginalValue;

            if (newValue > origValue)
            {
                drawParams.AppearanceData.BackColor = Color.LightGreen;
            }
            else if (newValue < origValue)
            {
                drawParams.AppearanceData.BackColor = Color.Pink;
            }

Thanks in advance.