Sum< TSource >() [2/10]

static ? decimal System.Linq.Enumerable.Sum< TSource > ( this IEnumerable< TSource > source, Func< TSource, decimal?> selector )

inlinestatic

Definition at line 8066 of file Enumerable.cs.

    {
        if (source == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.source);
        }
        if (selector == null)
        {
            ThrowHelper.ThrowArgumentNullException(ExceptionArgument.selector);
        }
        decimal value = default(decimal);
        foreach (TSource item in source)
        {
            decimal? num = selector(item);
            if (num.HasValue)
            {
                value += num.GetValueOrDefault();
            }
        }
        return value;
    }

References System.item, System.Linq.selector, System.Linq.source, System.Linq.ThrowHelper.ThrowArgumentNullException(), and System.value.