Update requires a valid UpdateCommand when passed DataRow collection with modified rows
Dec 20, 2011 9:02 PM
This is one of those frustrating errors that one encounters when using Typed dataset
trying to update a table in the dataset that doesnot contain a primary key.
To correct the error, just delete the table that generates the error from the
dataset, from the server explorer, edit the table and give it a primary key,
then re-drag it on the dataset and you are
good to go.