I don’t know how many times when I was debugging my application which had two databases communicating, I got the following error : Store update, insert, or delete statement affected an unexpected number of rows (0). Entities may have been modified or deleted since entities were loaded. Refresh ObjectStateManager entries. […]

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I was deploying a build on a cloud test machine with its own SQL Server and data. I was testing a sync function (a mobile handheld grabbing information from a server) and got the following error. Unable to update the EntitySet ” because it has a DefiningQuery and no element […]

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