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Look up records using a combobox and textbox

I have an access form with a combobox and a textbox on it.

I have a table with 4 fields.  Fields 1, 2 and 3 combined make up the primary key.  Field 4 is a currency field.

The combo box uses Fields 1, 2 and 3 to look up a record.  I want Field 4 of the record to be displayed in a textbox for editing.  How do I do this?  Thanks.
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dbfromnewjersey
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dbfromnewjersey
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2 Solutions
 
als315Commented:
May be you can upload sample DB with this form and table only?
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dbfromnewjerseyAuthor Commented:
All I want is for Field4 to be displayed in a textbox when a selection is made from the combobox.   The combobox uses the primary key (Field1,Field2 and Field3) to look up a record. I just want Field4 of that record to be displayed in a textbox.

To simplify even more, presume the table only has 2 fields.  Say Field1 is the primary key and Field2 is a currency field. I use the combobox to select a Field1 value.  I want the associated Field2 value to be displayed in the textbox upon a combobox selection.
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als315Commented:
You've started from:
"to be displayed in a textbox for editing" - do you like to edit record in table or only display it?
For second:
Add to form unbounded field and assing it's value to:
=[ComboBoxName].[Column](1)
Column numbers are started from 0.
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Jeffrey CoachmanMIS LiasonCommented:
dbfromnewjersey
<May be you can upload sample DB with this form and table only? >
Agreed, from your experience here you know that posting a sample a sample db always makes it easier to see what you have, thus shortening the time to get a solution...
;-)

In any event I am not quite sure how your combobox "Looks up" a record, but if it finds the Primary key, you can move to that record and display/edit the Price field (using a bound form)

You can also use an SQL update query if the form is unbound

Sample of both attached
Database221.mdb
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