Lookup<TKey, TElement>.Single Method
.NET Framework 3.5
Returns a single, specific element of a sequence of values.
This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.
|Single()||Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. (Defined by Enumerable.)|
|Single(Func<IGrouping<TKey, TElement>, Boolean>)||Returns the only element of a sequence that satisfies a specified condition, and throws an exception if more than one such element exists. (Defined by Enumerable.)|