LawFirm/AbstractLawFirmBusinessLogic/BusinessLogic/OrderLogic.cs

@@ -17,6 +17,7 @@ namespace AbstractLawFirmBusinessLogic.BusinessLogic
     {
         private readonly ILogger _logger;
         private readonly IOrderStorage _orderStorage;
+		static readonly object locker = new object();
 
 		public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
         {
@@ -89,9 +90,12 @@ namespace AbstractLawFirmBusinessLogic.BusinessLogic
         }
 
         public bool TakeOrderInWork(OrderBindingModel model)
+        {
+            lock (locker)
             {
                 return ChangeStatus(model, OrderStatus.Выполняется);
             }
+        }
 
         public bool FinishOrder(OrderBindingModel model)
         {