refactoring

Yavsc/Helpers/BillingHelpers.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Yavsc.Billing;
+using Yavsc.Models.Billing;
 
 namespace Yavsc.Helpers
 {
@@ -8,5 +9,7 @@ namespace Yavsc.Helpers
     {
         public static decimal Addition(this List<IBillItem> items) => items.Aggregate<IBillItem, decimal>(0m, (t, l) => t + l.Count * l.UnitaryCost);
 
+         public static decimal Addition(this List<CommandLine> items) => items.Select(i=>((IBillItem)i)).ToList().Addition();
+
     }
 }

Yavsc/Helpers/EstimateHelpers.cs

@@ -1,16 +0,0 @@
-
-using Yavsc.Models.Billing;
-
-namespace Yavsc.Helpers
-{
-    public static class EstimateHelpers { 
-        public static decimal GetTotal(this Estimate estimate)
-        {
-            decimal result = 0;
-            foreach (var l in estimate.Bill)
-                result += l.Count*l.UnitaryCost;
-            return result;
-        }
-    }
-
-}

Yavsc/Models/Messaging/EstimationEvent.cs

@@ -28,7 +28,7 @@ namespace Yavsc.Models.Messaging
             };
            Sender = perfer.Performer.UserName;
            Message = string.Format(SR["EstimationMessageToClient"],perfer.Performer.UserName,
-            estimate.Title,estimate.GetTotal());
+            estimate.Title,estimate.Bill.Addition());
         }
         ProviderClientInfo ProviderInfo { get; set; }
         Estimate Estimation { get; set; }