采购金额处理两位小数

BBWYB.Server.Model/Dto/Response/Purchaser/PurchaserResponse.cs

@@ -23,7 +23,7 @@ namespace BBWYB.Server.Model.Dto
         /// <summary>
         /// 采购金额容错字段
         /// </summary>
-        public decimal? PurchaseAmount { get { return PurchasedAmount; } }
+        public string? PurchaseAmount { get { return PurchasedAmount?.ToString("f2") ?? "0.00"; } }
 
         /// <summary>
         /// 最近采购时间容错字段