I have an problem with updating a database after I have deleted or edited a database row in VB.NET. When I insert a new row it works well.

When I delete I get the following error message:
Update requires a valid DeleteCommand when passed DataRow collection with deleted rows
And when I edit I get the following message:
Update requires a valid UpdateCommand when passed DataRow collection with modified rows

Does someone know the code I need?

Here is the code I use and that does not work:
For deleting:


For editing:


The name of mine bindingsource is KlantBindingSource, the name of mine TableAdapter is KlantTableAdapter and the name of mine DataSet is DataDataSet.

I am using Microsoft Visual Studio 2008

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Try checking the properties of the KlantTableAdapters update & delete commands to see if they are valid.

If the table being affected has no primary key this can also cause this type of problem.

Thanks for your answer. I forgot the primary key

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