Message in Spanish (Español)
El método Update de ObjectDataSource '<var>X</var>' debe tener un parámetro que se ajuste a OldValuesParameterFormatString. Compruebe UpdateMethod o cambie ConflictDetection a OverwriteValues.
Unlocalized message
The Update method on ObjectDataSource '<var>X</var>' must have a parameter that fits the OldValuesParameterFormatString. Check your UpdateMethod or change your ConflictDetection to OverwriteValues.
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