修复 称重加载 weighter.weightSystemClient.json 出错时, 没有画面

修复 称重每次开机 都重写 weighter.weightSystemClient.json

Project.FLY.Weight/FLY.Weight/Client/WeightSystemServiceClient.cs

@@ -126,25 +126,51 @@ namespace FLY.Weight.Client
         void Load() {
             if (!File.Exists(filePath))
                 return;
-            string json =File.ReadAllText(filePath);
-            var p = Newtonsoft.Json.JsonConvert.DeserializeObject< WeightSystemClientJsonDb>(json);
-            BinCnts = p.BinCnts;
+            try
+            {
+                string json = File.ReadAllText(filePath);
+                var p = Newtonsoft.Json.JsonConvert.DeserializeObject<WeightSystemClientJsonDb>(json);
+                BinCnts = p.BinCnts;
+            }
+            catch { 
+                //失败就算了。。。
+            }
+            
         }
         private void WeightSystemClient_PropertyChanged(object sender, PropertyChangedEventArgs e)
         {
             if (e.PropertyName == "BinCnts")
             {
-                ResetItems();
-                Save();
+                if (IsBinCntsChanged()) {
+                    ResetItems();
+                    Save();
+                }
             }
         }
 
+        bool IsBinCntsChanged() {
+
+            var binCnts = Items.Select(i => i.BinCnt).ToArray();
+
+            if (binCnts.Count() != BinCnts.Count())
+                return true;
+            else
+            {
+                for (int i = 0; i < binCnts.Count(); i++)
+                    if (binCnts[i] != BinCnts[i])
+                    {
+                        return true;
+                    }
+            }
+            return false;
+        }
         /// <summary>
         /// 重新创建 Items
         /// </summary>
         void ResetItems()
         {
 
+
             int last_itemcnt = Items.Count();
 
             for (int i = 0; i < Items.Count(); i++)