It's almost always better to use arrays or cell arrays…

Question

Editorial Team

Asked: May 15, 20262026-05-15T11:09:08+00:00 2026-05-15T11:09:08+00:00

I’m trying to insert in an Access Database, from visual C#. But i got

I’m trying to insert in an Access Database, from visual C#. But i got this error: error

What am I doing wrong in code? The values are correct, they comes from the input boxes.

Thanks!

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Editorial Team · Answer 1 · 2026-05-15T11:09:09+00:00

Editorial Team

From the picture it looks like the adapter.InsertCommand property is null.
Instead of

adapter.Insertcommand.CommandText = ...

use

insertCommand.CommandText = ...
adapter.InsertCommand = insertCommand;