diff --git a/WinFormControl/UWeightControl.cs b/WinFormControl/UWeightControl.cs
index 22aff58..ef13629 100644
--- a/WinFormControl/UWeightControl.cs
+++ b/WinFormControl/UWeightControl.cs
@@ -203,7 +203,8 @@ namespace WinFormControl
                   str = "0";
                 this.Invoke(new Action(delegate()
                 {
-                  var v = decimal.Parse(str);
+                  decimal v = 0;
+                  decimal.TryParse(str, out v);
                   lblChengZhong.Text = string.Format(format, v);
                   if (str != "0")
                   {
diff --git a/WinFormControl/Utils/SoundPalyUtil.cs b/WinFormControl/Utils/SoundPalyUtil.cs
index 833f3d5..0348c9c 100644
--- a/WinFormControl/Utils/SoundPalyUtil.cs
+++ b/WinFormControl/Utils/SoundPalyUtil.cs
@@ -26,8 +26,7 @@ namespace WinFormControl
       if (!File.Exists(filePath))
         return;
       player.SoundLocation = filePath;
-      player.Load();
-      player.Play();
+      player.PlaySync();
     }
   }