需求单No.158690 1、称重打码客户端：不允许打负数；

ButcherFactory.Form/SegmentProductionAuto_/SegmentProductionAutoForm.cs

@@ -236,10 +236,10 @@ namespace ButcherFactory.SegmentProductionAuto_
 //                    if (weight == 0)
 //                        weight = (g.StandardWeightLow ?? 4.0m) + 0.1m;
 //#endif
-                    if (weight == 0)
+                    if (weight <= 0)
                     {
                     //weight = 10;
-                      MessageBox.Show("重量不能为0");
+                      MessageBox.Show("重量必须大于0");
                       return;
                     }    
                     if (g.StandardWeight.HasValue)
@@ -336,8 +336,8 @@ namespace ButcherFactory.SegmentProductionAuto_
      // if (weight == 0)
        //  weight = (detail.StandardWeightLow ?? 4.0m) + 0.1m;
 //#endif
-        if (weight == 0)
-          throw new Exception("重量不能为0");
+        if (weight <= 0)
+          throw new Exception("重量必须大于0");
 
       if (detail.StandardWeight.HasValue)
       {