TryGetSingle< TSource >() [1/2]

static TSource System.Linq.Enumerable.TryGetSingle< TSource > ( this IEnumerable< TSource > source, Func< TSource, bool > predicate, out bool found )

inlinestaticprivate

Definition at line 7601 of file Enumerable.cs.

    {
        if (source == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
        }
        if (predicate == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.predicate);
        }
        using (IEnumerator<TSource> enumerator = source.GetEnumerator())
        {
            while (enumerator.MoveNext())
            {
                TSource current = enumerator.Current;
                if (!predicate(current))
                {
                    continue;
                }
                while (enumerator.MoveNext())
                {
                    if (predicate(enumerator.Current))
                    {
                        ThrowHelper.ThrowMoreThanOneMatchException();
                    }
                }
                found = true;
                return current;
            }
        }
        found = false;
        return default(TSource);
    }

References System.Collections.Generic.Dictionary< TKey, TValue >.GetEnumerator(), System.Linq.predicate, System.Linq.source, System.Linq.ThrowHelper.ThrowArgumentNullException(), and System.Linq.ThrowHelper.ThrowMoreThanOneMatchException().