using System; using System.Collections.Generic; using System.Linq; using System.Web; namespace Weee.Models.ExtensionMethods { public static class SteamUsageExtension { public static decimal GetTotalSteamUsage(this ICollection steamUsages) { decimal totalSteamUsage = 0; foreach (var steamUsage in steamUsages) { totalSteamUsage += steamUsage.Scalar; } return totalSteamUsage; } } }