修改办结时长计算方式

src/Hotline/Orders/Order.cs

@@ -1040,8 +1040,14 @@ namespace Hotline.Orders
         /// </summary>
         public void SetCreationTimeHandleDurationWorkday()
         {
-            if (!ActualHandleTime.HasValue) return;
-            CreationTimeHandleDuration = Math.Round((ActualHandleTime - CreationTime).Value.TotalSeconds);
+            if (!ActualHandleTime.HasValue)
+                CreationTimeHandleDuration = 0;
+            else
+            {
+                var count = Math.Round((ActualHandleTime - CreationTime).Value.TotalSeconds);
+                CreationTimeHandleDuration = count == 0 ? 1 : count;
+            }
+
         }
 
         /// <summary>
@@ -1049,9 +1055,13 @@ namespace Hotline.Orders
         /// </summary>
         public void SetCenterToOrgHandleDurationWorkday()
         {
-            if (!ActualHandleTime.HasValue) return;
-            if (!CenterToOrgTime.HasValue) return;
-            CenterToOrgHandleDuration = Math.Round((ActualHandleTime - CenterToOrgTime).Value.TotalSeconds);
+            if (ActualHandleTime.HasValue && CenterToOrgTime.HasValue)
+            {
+                var count = Math.Round((ActualHandleTime - CenterToOrgTime).Value.TotalSeconds);
+                CenterToOrgHandleDuration = count == 0 ? 1 : count;
+            }
+            else
+                CenterToOrgHandleDuration = 0;
         }
 
         /// <summary>