Do you have a unique field in your table?
Also if you have a primary key , you cannot update the Key if it is in WHERE clause of your SQL statement. It will cause a concurrency violation.
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Problem with updating with an ASP.NET data adapter
I get the following error message in VS.NET (ASP.NET) when trying to create a data adapter for an MS SQL database (the database is hosted on a remote server):
"Could not determine which columns uniquely identify the rows for "MyTable"
This happens for the update and delete statements of the data adapter.
Does anybody know what could be causing this error?
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Answers
Here is a screenshot that shows the Visual Studio output:
www.netbump.com/~samael/er
What kind of provider are you using? Some providers cannot generate some statements. I am using eInfoDesign dbProvider and it works fine. You can download it here
http://www.einfodesigns.co
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SPLIT: arvindb1{8622639} & iboutchkine{8626196} & amit_g{8626229}
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by: arvindb1Posted on 2003-05-31 at 20:46:15ID: 8622639
it might help
http://support.microsoft.c
also it happens if there are no primary keys defined in your table being accessed by dataadapter, you can write your custom update statements to update
Arvind