diff --git a/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
index 2fa844a2..2e52130e 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/BaseFmt.cs
@@ -215,7 +215,9 @@ namespace ServiceLib.Handler.Fmt
             foreach (var item in s)
             {
                 if (str.Contains(item, StringComparison.OrdinalIgnoreCase))
+                {
                     return true;
+                }
             }
             return false;
         }
diff --git a/v2rayN/ServiceLib/Handler/Fmt/ShadowsocksFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/ShadowsocksFmt.cs
index 98be504d..d35226e9 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/ShadowsocksFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/ShadowsocksFmt.cs
@@ -27,10 +27,10 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
-
-            string remark = string.Empty;
+            }
+            var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
                 remark = "#" + Utils.UrlEncode(item.Remarks);
@@ -53,7 +53,9 @@ namespace ServiceLib.Handler.Fmt
         {
             var match = UrlFinder.Match(result);
             if (!match.Success)
+            {
                 return null;
+            }
 
             ProfileItem item = new();
             var base64 = match.Groups["base64"].Value.TrimEnd('/');
@@ -72,7 +74,9 @@ namespace ServiceLib.Handler.Fmt
                 return null;
             }
             if (!details.Success)
+            {
                 return null;
+            }
             item.Security = details.Groups["method"].Value;
             item.Id = details.Groups["password"].Value;
             item.Address = details.Groups["hostname"].Value;
@@ -84,7 +88,9 @@ namespace ServiceLib.Handler.Fmt
         {
             var parsedUrl = Utils.TryUri(result);
             if (parsedUrl == null)
+            {
                 return null;
+            }
 
             ProfileItem item = new()
             {
@@ -96,7 +102,7 @@ namespace ServiceLib.Handler.Fmt
             //2022-blake3
             if (rawUserInfo.Contains(':'))
             {
-                string[] userInfoParts = rawUserInfo.Split(new[] { ':' }, 2);
+                var userInfoParts = rawUserInfo.Split(new[] { ':' }, 2);
                 if (userInfoParts.Length != 2)
                 {
                     return null;
@@ -107,8 +113,8 @@ namespace ServiceLib.Handler.Fmt
             else
             {
                 // parse base64 UserInfo
-                string userInfo = Utils.Base64Decode(rawUserInfo);
-                string[] userInfoParts = userInfo.Split(new[] { ':' }, 2);
+                var userInfo = Utils.Base64Decode(rawUserInfo);
+                var userInfoParts = userInfo.Split(new[] { ':' }, 2);
                 if (userInfoParts.Length != 2)
                 {
                     return null;
diff --git a/v2rayN/ServiceLib/Handler/Fmt/SingboxFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/SingboxFmt.cs
index e3540872..07098d2b 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/SingboxFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/SingboxFmt.cs
@@ -1,10 +1,10 @@
-namespace ServiceLib.Handler.Fmt
+namespace ServiceLib.Handler.Fmt
 {
     public class SingboxFmt : BaseFmt
     {
         public static List<ProfileItem>? ResolveFullArray(string strData, string? subRemarks)
         {
-            var configObjects = JsonUtils.Deserialize<Object[]>(strData);
+            var configObjects = JsonUtils.Deserialize<object[]>(strData);
             if (configObjects != null && configObjects.Length > 0)
             {
                 List<ProfileItem> lstResult = [];
@@ -52,4 +52,4 @@
             return null;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/v2rayN/ServiceLib/Handler/Fmt/SocksFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/SocksFmt.cs
index f13cccbb..9527bb56 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/SocksFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/SocksFmt.cs
@@ -24,9 +24,9 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            var url = string.Empty;
-
+            }
             var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
@@ -77,7 +77,7 @@ namespace ServiceLib.Handler.Fmt
                 return null;
             }
             item.Address = arr1[1][..indexPort];
-            item.Port = (arr1[1][(indexPort + 1)..]).ToInt();
+            item.Port = arr1[1][(indexPort + 1)..].ToInt();
             item.Security = arr21.First();
             item.Id = arr21[1];
 
@@ -88,7 +88,9 @@ namespace ServiceLib.Handler.Fmt
         {
             var parsedUrl = Utils.TryUri(result);
             if (parsedUrl == null)
+            {
                 return null;
+            }
 
             ProfileItem item = new()
             {
diff --git a/v2rayN/ServiceLib/Handler/Fmt/TrojanFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/TrojanFmt.cs
index afcaa194..60f05764 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/TrojanFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/TrojanFmt.cs
@@ -13,7 +13,9 @@ namespace ServiceLib.Handler.Fmt
 
             var url = Utils.TryUri(str);
             if (url == null)
+            {
                 return null;
+            }
 
             item.Address = url.IdnHost;
             item.Port = url.Port;
@@ -21,7 +23,7 @@ namespace ServiceLib.Handler.Fmt
             item.Id = Utils.UrlDecode(url.UserInfo);
 
             var query = Utils.ParseQueryString(url.Query);
-            ResolveStdTransport(query, ref item);
+            _ = ResolveStdTransport(query, ref item);
 
             return item;
         }
@@ -29,16 +31,16 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
-
-            string remark = string.Empty;
+            }
+            var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
                 remark = "#" + Utils.UrlEncode(item.Remarks);
             }
             var dicQuery = new Dictionary<string, string>();
-            GetStdTransport(item, null, ref dicQuery);
+            _ = GetStdTransport(item, null, ref dicQuery);
 
             return ToUri(EConfigType.Trojan, item.Address, item.Port, item.Id, dicQuery, remark);
         }
diff --git a/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
index 8fc23fbd..39f52d7b 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/TuicFmt.cs
@@ -13,7 +13,9 @@ namespace ServiceLib.Handler.Fmt
 
             var url = Utils.TryUri(str);
             if (url == null)
+            {
                 return null;
+            }
 
             item.Address = url.IdnHost;
             item.Port = url.Port;
@@ -36,10 +38,11 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
+            }
 
-            string remark = string.Empty;
+            var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
                 remark = "#" + Utils.UrlEncode(item.Remarks);
diff --git a/v2rayN/ServiceLib/Handler/Fmt/V2rayFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/V2rayFmt.cs
index cc2ec7bf..ee5c8512 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/V2rayFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/V2rayFmt.cs
@@ -1,10 +1,10 @@
-namespace ServiceLib.Handler.Fmt
+namespace ServiceLib.Handler.Fmt
 {
     public class V2rayFmt : BaseFmt
     {
         public static List<ProfileItem>? ResolveFullArray(string strData, string? subRemarks)
         {
-            var configObjects = JsonUtils.Deserialize<Object[]>(strData);
+            var configObjects = JsonUtils.Deserialize<object[]>(strData);
             if (configObjects != null && configObjects.Length > 0)
             {
                 List<ProfileItem> lstResult = [];
@@ -53,4 +53,4 @@
             return null;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/v2rayN/ServiceLib/Handler/Fmt/VLESSFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/VLESSFmt.cs
index 20899afb..819c50b6 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/VLESSFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/VLESSFmt.cs
@@ -14,7 +14,9 @@ namespace ServiceLib.Handler.Fmt
 
             var url = Utils.TryUri(str);
             if (url == null)
+            {
                 return null;
+            }
 
             item.Address = url.IdnHost;
             item.Port = url.Port;
@@ -24,7 +26,7 @@ namespace ServiceLib.Handler.Fmt
             var query = Utils.ParseQueryString(url.Query);
             item.Security = query["encryption"] ?? Global.None;
             item.StreamSecurity = query["security"] ?? "";
-            ResolveStdTransport(query, ref item);
+            _ = ResolveStdTransport(query, ref item);
 
             return item;
         }
@@ -32,10 +34,11 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
+            }
 
-            string remark = string.Empty;
+            var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
                 remark = "#" + Utils.UrlEncode(item.Remarks);
@@ -49,7 +52,7 @@ namespace ServiceLib.Handler.Fmt
             {
                 dicQuery.Add("encryption", Global.None);
             }
-            GetStdTransport(item, Global.None, ref dicQuery);
+            _ = GetStdTransport(item, Global.None, ref dicQuery);
 
             return ToUri(EConfigType.VLESS, item.Address, item.Port, item.Id, dicQuery, remark);
         }
diff --git a/v2rayN/ServiceLib/Handler/Fmt/VmessFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/VmessFmt.cs
index cf1eaa62..47bf297d 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/VmessFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/VmessFmt.cs
@@ -20,10 +20,10 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
-
-            VmessQRCode vmessQRCode = new()
+            }
+            var vmessQRCode = new VmessQRCode
             {
                 v = item.ConfigVersion,
                 ps = item.Remarks.TrimEx(),
@@ -42,7 +42,7 @@ namespace ServiceLib.Handler.Fmt
                 fp = item.Fingerprint
             };
 
-            url = JsonUtils.Serialize(vmessQRCode);
+            var url = JsonUtils.Serialize(vmessQRCode);
             url = Utils.Base64Encode(url);
             url = $"{Global.ProtocolShares[EConfigType.VMess]}{url}";
 
@@ -60,7 +60,7 @@ namespace ServiceLib.Handler.Fmt
             result = result[Global.ProtocolShares[EConfigType.VMess].Length..];
             result = Utils.Base64Decode(result);
 
-            VmessQRCode? vmessQRCode = JsonUtils.Deserialize<VmessQRCode>(result);
+            var vmessQRCode = JsonUtils.Deserialize<VmessQRCode>(result);
             if (vmessQRCode == null)
             {
                 msg = ResUI.FailedConversionConfiguration;
@@ -100,7 +100,7 @@ namespace ServiceLib.Handler.Fmt
 
         public static ProfileItem? ResolveStdVmess(string str)
         {
-            ProfileItem item = new()
+            var item = new ProfileItem
             {
                 ConfigType = EConfigType.VMess,
                 Security = "auto"
@@ -108,7 +108,9 @@ namespace ServiceLib.Handler.Fmt
 
             var url = Utils.TryUri(str);
             if (url == null)
+            {
                 return null;
+            }
 
             item.Address = url.IdnHost;
             item.Port = url.Port;
diff --git a/v2rayN/ServiceLib/Handler/Fmt/WireguardFmt.cs b/v2rayN/ServiceLib/Handler/Fmt/WireguardFmt.cs
index f36741ed..d7083963 100644
--- a/v2rayN/ServiceLib/Handler/Fmt/WireguardFmt.cs
+++ b/v2rayN/ServiceLib/Handler/Fmt/WireguardFmt.cs
@@ -13,7 +13,9 @@ namespace ServiceLib.Handler.Fmt
 
             var url = Utils.TryUri(str);
             if (url == null)
+            {
                 return null;
+            }
 
             item.Address = url.IdnHost;
             item.Port = url.Port;
@@ -33,10 +35,11 @@ namespace ServiceLib.Handler.Fmt
         public static string? ToUri(ProfileItem? item)
         {
             if (item == null)
+            {
                 return null;
-            string url = string.Empty;
+            }
 
-            string remark = string.Empty;
+            var remark = string.Empty;
             if (item.Remarks.IsNotEmpty())
             {
                 remark = "#" + Utils.UrlEncode(item.Remarks);