使用using

Common/util/MyWebClient.cs

@@ -142,7 +142,8 @@ namespace OnlineStore.Common
                 LogUtil.debug("HTTP GET FROM: " + url);
                 using (var wc = new MyWebClient { Encoding = encoding })
                 {
-                    var readStream = wc.OpenRead(url);
+                    using (var readStream = wc.OpenRead(url))
+                    {
                         using (var sr = new StreamReader(readStream, encoding))
                         {
                             var result = sr.ReadToEnd();
@@ -150,6 +151,8 @@ namespace OnlineStore.Common
                             return result;
                         }
                     }
+
+                }
             }
             catch (Exception e)
             {