MS Access中的慢Dlookup呼叫

Question

I have an MS Access front end/back end database. In the back end database I have a table keyed on FundCode. The table has 4 fields and 150 records. In the front end I have a form used to update a different table in the back end. When the user enters the FundCode on this form, I want to display the data in the three columns on the form - so the use can check they have chosen the correct fund code. To display this I am using a textbox (not enabled) to display with a control being a Dlookup into my fund table eg

=DLookUp("ISIN","tbl_FundMap","FundCode = " & [FundCode])

The code does what it supposed to do, but when I have around 100 entries in the form the it takes around 10 sec to refresh the screen every time a user rolls up or down. Any suggestions how I can achieve a quicker result?

Answer 1

Rather than using text boxes and the DLOOKUP function, I would reccomend using combo boxes.

The first combo box is where the user selects the actual FundCode value. The 2nd combo box, which is locked and/or disabled, also has its control source set to FundCode , but its row source includes the ISIN as the 2nd column. That way, the 2nd combo box always shows the ISIN based on the current FundCode selected.