Merge branch 'master' of http://www.scserverddns.top:13000/sc/SunlightAggregationTerminal

Class/DataReceived.cs

@@ -57,7 +57,7 @@ namespace SunlightAggregationTerminal.Class
                 });
             }
 
-            return null; // 如果未找到有效IP则返回null
+            return ""; // 如果未找到有效IP则返回null
         }
 
         public static string ServerIP = "";

QueryPage.xaml.cs

@@ -75,7 +75,7 @@ public partial class QueryPage : ContentPage
                 }
             }            
         }
-        catch (Exception ex) {
+        catch (Exception) {
         }
     }