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Alex Rivera
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Having IEnumerable<Order> orders , how to get a Dictionary<string, IEnumerable<Order>> using Linq, where the key is Order.CustomerName mapped to a IEnumerable of customer's orders. orders.ToDictionary(order => order.CustomerName) is not going to work right away, since there could be multiple orders that could have the same CustomerName. Solution: orders.ToLookup(order => order.CustomerName);
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