I'd like to thank mmcdonal for all the assistance in cracking my problems. Many thanks.

However, one other question. How do you create a method to look up the next largest value in a row. For instance; my table is laid out as such.

Width Height Cost
1200 1200 350.00
1250 1200 355.00
1300 1200 370.00
1200 1250 360.00
1250 1250 400.00
etc

If someone entered a value of 1210 for the width, what process would allow the calculation to go to the next highest value? The form has two text boxes, one for the width and one for the height.

Cheers
Chris:)

I believe it would be something like:

SELECT TOP 1 *
FROM tbl
WHERE tbl.Width >= Forms![frmForm]![fldWidth]
ORDER BY tbl.Width

Thank you, will try this over the next few days.

Hi Kindler

I've tried this, but it did not work? Any other ideas?

Thanks alot
Chris

It should work, can you describe what is happening when you try it and how you're implementing the query (design view, VBA, etc.)?

If you're talking about a form that is based on that table, and if you have a textbox that the person types in the number 1210, then on its After Update event you can put something like

Dim intWidth as Integer

intWidth = DLookUp("[Width]", "CostTable", "[Width] >= " & Me.txtWidth)

This will pull out the first width that is equal or greater than the width you entered into the textbox. Replace "CostTable" with real name of your table. I called the textbox txtWidth.

From there you can get the height and cost using the DLookUp function again.

Greg Serrano
Michigan Dept. of Environmental Quality, Air Quality Division

Hi Greg,

This is great, it works perfectly. I've been able to generate all my data. So thanks very much. Your help is certainly most greatly appreciated.

Chris