AfterCellUpdate fires any time the user updates any cell in the grid. Not just newly-inserted rows. So again, you seem to be describing one thing and doing something else. 

If you ONLY want this to happen for new rows, then you should use AfterRowInsert (which happens when the new row is created) or maybe BeforeRowUpdate (which fires before the row is committed to the data source). 

Hi

(This is working now, but I wanted to clarify)  I have two other questions about group by and populating ultra dropdown which I'll post separately.

On Insert of a new row I want to string together a value in a field based on two other fields  field 3 = field1 + field2.When populating the grid it should read from the database saved value.

When updating the value in field3 needs to change if the value in field1 or field2 is updated, (this is working on insert and change of field1 or field2), so I did something like:

private void UltraGridList_AfterCellUpdate(object sender, CellEventArgs e)
        {

    if ((e.Cell.Column.Key.ToUpper().Equals("FIELD1") || e.Cell.Column.Key.ToUpper().Equals("FIELD2"))

     UltraGridList.ActiveRow.Cells["FIELD3"].Value = "STUFF FOR " + UltraGridList.ActiveRow.Cells["FIELD1"].Value + " - " + UltraGridList.ActiveRow.Cells["FIELD2"].Value;

Hi Tony, 

Maybe I was confused by your original question, because this doesn't appear to be anything like what you asked. This code will be fired for any row, not just a new row. And it will only be hit when the user changes a value in the row. Your original post was talking about adding new rows - that's what DefaultCellValue does. 

If you just want to calculate the value of a column based on other columns in the same row, then you should be using the InitializeRow event. This event fires when the row is initially created and also whenever a value in the row changes. 

Hi,

Thanks for your reply.  This is new to me, so there may be a better/another way.

I was able to use the AfterCellUpdate event, but had set set a "search mode" flag so when searching it would read the value from the database and not from the cell values, otherwise I was getting a null value reference since FIELD1 and FIELD2 were not set yet.

So basically if FIELD1 or FIELD2 changes re-concatenate it in FIELD3:

private void UltraGridList_AfterCellUpdate(object sender, CellEventArgs e)
{
              if ((e.Cell.Column.Key.ToUpper().Equals("FIELD1") || e.Cell.Column.Key.ToUpper().Equals("FIELD2"))
                    & !searchmode)
                    UltraGridList.ActiveRow.Cells["FIELD3"].Value = "CUSTOM CHG FOR " + UltraGridList.ActiveRow.Cells["FIELD1"].Value + " - " + UltraGridList.ActiveRow.Cells["FIELD2"].Value;
}