How can I return the Value from a .NET IGrouping via a Key?

Question

I'm struggling to figure out how to retrieve the Value part of an IGrouping instance.

I have the following:

IList<IGrouping<string, PurchaseHistory> results = someList.GroupBy(x => x.UserName);

And I now wish to iterate through each collection and retrieve the purchase histories for that user (and check if some stuff exists in the collection of purchase histories).

Answer 1

how about a nested loop?

IList<IGrouping<string, PurchaseHistory>> results = someList.GroupBy(x => x.UserName);

foreach (IGrouping<string, PurchaseHistory> group in results)
{
    foreach (PurchaseHistory item in group)
    {
        CheckforStuff(item);
    }
}

or one loop with linq statement

IList<IGrouping<string, PurchaseHistory>> results = someList.GroupBy(x => x.UserName);
foreach (IGrouping<string, PurchaseHistory> group in results)
{
    bool result = group.Any(item => item.PurchasedOn > someDate);
}