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Error Trap on Datgrid

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Wallegator

Wallegator

Programmer
Jan 3, 2001
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I have a datagrid control with 3 columns ... a city or county, a state, and an abbreviation. I want to prevent duplicates from being entered in the third column ... abbreviation. How do I trap the error and clear out any existing data entered in the cell if its a duplicate?
 
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