Cry about...
MS-Windows Troubleshooting

Server Error in '/<folder>' ... Dynamic SQL generation for the UpdateCommand is not supported ...

Symptom:

When trying to run a .NET web-application that updates a database table, the following error is generated in the browser:

Server Error in '/<folder>' Application
Dynamic SQL generation for the UpdateCommand is not Supported against a SelectCommand that does not return any key column information.

Cause

A record has been retrieved from a database and an attempt has been made to update the record, however the database table lacks a primary key and therefore there is no way to update the required record.

Remedy:

Ensure that a primary key is created on the database table.

These notes have been tested within Microsoft Visual Studio .NET 2003 running under Windows 2000, and may apply to other versions as well.