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IObjectEnumerable<T>.Single |
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IObjectEnumerable<T>.Single |
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Returns the only element of an enumeration, and throws an exception if there is not exactly one element in the enumeration.
Use the method to obtain the only element of an enumeration. If the enumeration contains more than one element or the enumeration is empty, the method throws an exception. To instead return nil when the enumeration is empty or contains more that one element, use the M:Devart.EntityDAC.IObjectEnumerable{T}.SingleOrDefault() method.