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Home/ Questions/Q 7402055
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Editorial Team
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Editorial Team
Asked: May 29, 20262026-05-29T04:38:38+00:00 2026-05-29T04:38:38+00:00

How to make all columns allow null before adding a new row to the

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How to make all columns allow null before adding a new row to the datatable .

 dt.Rows.Add(dt.NewRow());

This line throws an exception

Column XXX does not allow nulls

How to fix this problem.

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  1. Editorial Team
    Editorial Team
    2026-05-29T04:38:40+00:00Added an answer on May 29, 2026 at 4:38 am

    You don’t add the row until it’s filled and ready to be saved.

    DataRow row = dt.NewRow();
    

    …fill row with values…

    dt.Rows.Add(row);
    
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