>I have a grid with 3 columns, the first column is the account code and the second is its account name.
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>I have a table that contains the codes and names. How can I automatically put the account name in the 2nd column if the account code is entered on the 1st column?
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>TIA.

You set a relation between the table you work with and the table containg the account code and name. Then simply set the third column's ControlSource to Yoursecondtable.accountname. And make sure to also set it to readonly!