Group preview (#8760)

* Group Preview

* Fix

v2rayN/ServiceLib/Handler/ConfigHandler.cs

@@ -844,7 +844,7 @@ public static class ConfigHandler
     /// <returns>0 if successful, -1 if failed</returns>
     public static async Task<int> SortServers(Config config, string subId, string colName, bool asc)
     {
-        var lstModel = await AppManager.Instance.ProfileItems(subId, "");
+        var lstModel = await AppManager.Instance.ProfileModels(subId, "");
         if (lstModel.Count <= 0)
         {
             return -1;
@@ -1213,7 +1213,8 @@ public static class ConfigHandler
         }
         var extraItem = new ProtocolExtraItem
         {
-            ChildItems = childProfileIndexId, MultipleLoad = multipleLoad,
+            ChildItems = childProfileIndexId,
+            MultipleLoad = multipleLoad,
         };
         profile.SetProtocolExtra(extraItem);
         var ret = await AddServerCommon(config, profile, true);
@@ -1277,7 +1278,7 @@ public static class ConfigHandler
     /// <returns>Number of removed servers or -1 if failed</returns>
     public static async Task<int> RemoveInvalidServerResult(Config config, string subid)
     {
-        var lstModel = await AppManager.Instance.ProfileItems(subid, "");
+        var lstModel = await AppManager.Instance.ProfileModels(subid, "");
         if (lstModel is { Count: <= 0 })
         {
             return -1;

v2rayN/ServiceLib/Manager/AppManager.cs

@@ -191,10 +191,17 @@ public sealed class AppManager
         return (await ProfileItems(subid))?.Select(t => t.IndexId)?.ToList();
     }
 
-    public async Task<List<ProfileItemModel>?> ProfileItems(string subid, string filter)
+    public async Task<List<ProfileItemModel>?> ProfileModels(string subid, string filter)
     {
-        var sql = @$"select a.*
+        var sql = @$"select a.IndexId
-                           ,b.remarks subRemarks
+                           ,a.ConfigType
+                           ,a.Remarks
+                           ,a.Address
+                           ,a.Port
+                           ,a.Network
+                           ,a.StreamSecurity
+                           ,a.Subid
+                           ,b.remarks as subRemarks
                         from ProfileItem a
                         left join SubItem b on a.subid = b.id
                         where 1=1 ";
@@ -264,50 +271,51 @@ public sealed class AppManager
 
     public async Task MigrateProfileExtra()
     {
-#pragma warning disable CS0618
+        await MigrateProfileExtraGroup();
-        var list = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
-        var groupItems = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.IndexId)).ToDictionary(t => t.IndexId!));
 
-        const int pageSize = 500;
+#pragma warning disable CS0618
+
+        const int pageSize = 100;
         var offset = 0;
 
         while (true)
         {
-            var sql = $"SELECT * FROM ProfileItem WHERE ConfigVersion < 3 LIMIT {pageSize} OFFSET {offset}";
+            var sql = $"SELECT * FROM ProfileItem " +
+                $"WHERE ConfigVersion < 3 " +
+                $"AND ConfigType NOT IN ({(int)EConfigType.PolicyGroup}, {(int)EConfigType.ProxyChain}) " +
+                $"LIMIT {pageSize} OFFSET {offset}";
             var batch = await SQLiteHelper.Instance.QueryAsync<ProfileItem>(sql);
             if (batch is null || batch.Count == 0)
             {
                 break;
             }
 
-            var batchSuccessCount = 0;
+            var batchSuccessCount = await MigrateProfileExtraSub(batch);
+
+            // Only increment offset by the number of failed items that remain in the result set
+            // Successfully updated items are automatically excluded from future queries due to ConfigVersion = 3
+            offset += batch.Count - batchSuccessCount;
+        }
+
+        //await ProfileGroupItemManager.Instance.ClearAll();
+#pragma warning restore CS0618
+    }
+
+    private async Task<int> MigrateProfileExtraSub(List<ProfileItem> batch)
+    {
+        var updateProfileItems = new List<ProfileItem>();
+
         foreach (var item in batch)
         {
             try
             {
                 var extra = item.GetProtocolExtra();
-
-                    if (item.ConfigType is EConfigType.PolicyGroup or EConfigType.ProxyChain)
-                    {
-                        extra = extra with { GroupType = nameof(item.ConfigType) };
-                        groupItems.TryGetValue(item.IndexId, out var groupItem);
-                        if (groupItem != null && !groupItem.NotHasChild())
-                        {
-                            extra = extra with
-                            {
-                                ChildItems = groupItem.ChildItems,
-                                SubChildItems = groupItem.SubChildItems,
-                                Filter = groupItem.Filter,
-                                MultipleLoad = groupItem.MultipleLoad,
-                            };
-                        }
-                    }
-
                 switch (item.ConfigType)
                 {
                     case EConfigType.Shadowsocks:
                         extra = extra with { SsMethod = item.Security.NullIfEmpty() };
                         break;
+
                     case EConfigType.VMess:
                         extra = extra with
                         {
@@ -315,6 +323,7 @@ public sealed class AppManager
                             VmessSecurity = item.Security.NullIfEmpty(),
                         };
                         break;
+
                     case EConfigType.VLESS:
                         extra = extra with
                         {
@@ -322,6 +331,7 @@ public sealed class AppManager
                             VlessEncryption = item.Security,
                         };
                         break;
+
                     case EConfigType.Hysteria2:
                         extra = extra with
                         {
@@ -332,15 +342,18 @@ public sealed class AppManager
                             HopInterval = _config.HysteriaItem.HopInterval.ToString(),
                         };
                         break;
+
                     case EConfigType.TUIC:
                         item.Username = item.Id;
                         item.Id = item.Security;
                         item.Password = item.Security;
                         break;
+
                     case EConfigType.HTTP:
                     case EConfigType.SOCKS:
                         item.Username = item.Security;
                         break;
+
                     case EConfigType.WireGuard:
                         extra = extra with
                         {
@@ -357,8 +370,8 @@ public sealed class AppManager
                 item.Password = item.Id;
 
                 item.ConfigVersion = 3;
-                    await SQLiteHelper.Instance.UpdateAsync(item);
+
-                    batchSuccessCount++;
+                updateProfileItems.Add(item);
             }
             catch (Exception ex)
             {
@@ -366,10 +379,90 @@ public sealed class AppManager
             }
         }
 
-            // Only increment offset by the number of failed items that remain in the result set
+        if (updateProfileItems.Count > 0)
-            // Successfully updated items are automatically excluded from future queries due to ConfigVersion = 3
+        {
-            offset += batch.Count - batchSuccessCount;
+            try
+            {
+                var count = await SQLiteHelper.Instance.UpdateAllAsync(updateProfileItems);
+                return count;
             }
+            catch (Exception ex)
+            {
+                Logging.SaveLog($"MigrateProfileExtraGroup update error: {ex}");
+                return 0;
+            }
+        }
+        else
+        {
+            return 0;
+        }
+    }
+
+    private async Task<bool> MigrateProfileExtraGroup()
+    {
+#pragma warning disable CS0618
+        var list = await SQLiteHelper.Instance.TableAsync<ProfileGroupItem>().ToListAsync();
+        var groupItems = new ConcurrentDictionary<string, ProfileGroupItem>(list.Where(t => !string.IsNullOrEmpty(t.IndexId)).ToDictionary(t => t.IndexId!));
+
+        var sql = $"SELECT * FROM ProfileItem WHERE ConfigVersion < 3 AND ConfigType IN ({(int)EConfigType.PolicyGroup}, {(int)EConfigType.ProxyChain})";
+        var items = await SQLiteHelper.Instance.QueryAsync<ProfileItem>(sql);
+
+        if (items is null || items.Count == 0)
+        {
+            Logging.SaveLog("MigrateProfileExtraGroup: No items to migrate.");
+            return true;
+        }
+
+        Logging.SaveLog($"MigrateProfileExtraGroup: Found {items.Count} group items to migrate.");
+
+        var updateProfileItems = new List<ProfileItem>();
+
+        foreach (var item in items)
+        {
+            try
+            {
+                var extra = item.GetProtocolExtra();
+
+                extra = extra with { GroupType = nameof(item.ConfigType) };
+                groupItems.TryGetValue(item.IndexId, out var groupItem);
+                if (groupItem != null && !groupItem.NotHasChild())
+                {
+                    extra = extra with
+                    {
+                        ChildItems = groupItem.ChildItems,
+                        SubChildItems = groupItem.SubChildItems,
+                        Filter = groupItem.Filter,
+                        MultipleLoad = groupItem.MultipleLoad,
+                    };
+                }
+
+                item.SetProtocolExtra(extra);
+
+                item.ConfigVersion = 3;
+                updateProfileItems.Add(item);
+            }
+            catch (Exception ex)
+            {
+                Logging.SaveLog($"MigrateProfileExtraGroup item error [{item.IndexId}]: {ex}");
+            }
+        }
+
+        if (updateProfileItems.Count > 0)
+        {
+            try
+            {
+                var count = await SQLiteHelper.Instance.UpdateAllAsync(updateProfileItems);
+                Logging.SaveLog($"MigrateProfileExtraGroup: Successfully updated {updateProfileItems.Count} items.");
+                return updateProfileItems.Count == count;
+            }
+            catch (Exception ex)
+            {
+                Logging.SaveLog($"MigrateProfileExtraGroup update error: {ex}");
+                return false;
+            }
+        }
+
+        return true;
 
         //await ProfileGroupItemManager.Instance.ClearAll();
 #pragma warning restore CS0618

v2rayN/ServiceLib/Manager/GroupProfileManager.cs

@@ -12,7 +12,7 @@ public class GroupProfileManager
         return await HasCycle(indexId, extraInfo, new HashSet<string>(), new HashSet<string>());
     }
 
-    public static async Task<bool> HasCycle(string? indexId, ProtocolExtraItem? extraInfo, HashSet<string> visited, HashSet<string> stack)
+    private static async Task<bool> HasCycle(string? indexId, ProtocolExtraItem? extraInfo, HashSet<string> visited, HashSet<string> stack)
     {
         if (indexId.IsNullOrEmpty() || extraInfo == null)
         {
@@ -81,14 +81,15 @@ public class GroupProfileManager
         {
             return new();
         }
-        var items = await GetSelectedChildProfileItems(protocolExtra);
+
-        var subItems = await GetSubChildProfileItems(protocolExtra);
+        var items = new List<ProfileItem>();
-        items.AddRange(subItems);
+        items.AddRange(await GetSubChildProfileItems(protocolExtra));
+        items.AddRange(await GetSelectedChildProfileItems(protocolExtra));
 
         return items;
     }
 
-    public static async Task<List<ProfileItem>> GetSelectedChildProfileItems(ProtocolExtraItem? extra)
+    private static async Task<List<ProfileItem>> GetSelectedChildProfileItems(ProtocolExtraItem? extra)
     {
         if (extra == null || extra.ChildItems.IsNullOrEmpty())
         {
@@ -105,10 +106,10 @@ public class GroupProfileManager
                 p.ConfigType != EConfigType.Custom
             )
             .ToList();
-        return childProfiles;
+        return childProfiles ?? new();
     }
 
-    public static async Task<List<ProfileItem>> GetSubChildProfileItems(ProtocolExtraItem? extra)
+    private static async Task<List<ProfileItem>> GetSubChildProfileItems(ProtocolExtraItem? extra)
     {
         if (extra == null || extra.SubChildItems.IsNullOrEmpty())
         {

v2rayN/ServiceLib/Models/ProfileItem.cs

@@ -1,7 +1,7 @@
 namespace ServiceLib.Models;
 
 [Serializable]
-public class ProfileItem : ReactiveObject
+public class ProfileItem
 {
     private ProtocolExtraItem? _protocolExtraCache;
 
@@ -10,6 +10,7 @@ public class ProfileItem : ReactiveObject
         IndexId = string.Empty;
         ConfigType = EConfigType.VMess;
         ConfigVersion = 3;
+        Subid = string.Empty;
         Address = string.Empty;
         Port = 0;
         Password = string.Empty;
@@ -21,7 +22,6 @@ public class ProfileItem : ReactiveObject
         Path = string.Empty;
         StreamSecurity = string.Empty;
         AllowInsecure = string.Empty;
-        Subid = string.Empty;
     }
 
     #region function
@@ -148,26 +148,26 @@ public class ProfileItem : ReactiveObject
     public string IndexId { get; set; }
 
     public EConfigType ConfigType { get; set; }
+    public ECoreType? CoreType { get; set; }
     public int ConfigVersion { get; set; }
+    public string Subid { get; set; }
+    public bool IsSub { get; set; } = true;
+    public int? PreSocksPort { get; set; }
+    public bool DisplayLog { get; set; } = true;
+    public string Remarks { get; set; }
     public string Address { get; set; }
     public int Port { get; set; }
     public string Password { get; set; }
     public string Username { get; set; }
     public string Network { get; set; }
-    public string Remarks { get; set; }
     public string HeaderType { get; set; }
     public string RequestHost { get; set; }
     public string Path { get; set; }
     public string StreamSecurity { get; set; }
     public string AllowInsecure { get; set; }
-    public string Subid { get; set; }
-    public bool IsSub { get; set; } = true;
     public string Sni { get; set; }
     public string Alpn { get; set; } = string.Empty;
-    public ECoreType? CoreType { get; set; }
-    public int? PreSocksPort { get; set; }
     public string Fingerprint { get; set; }
-    public bool DisplayLog { get; set; } = true;
     public string PublicKey { get; set; }
     public string ShortId { get; set; }
     public string SpiderX { get; set; }

v2rayN/ServiceLib/Models/ProfileItemModel.cs

@@ -1,16 +1,24 @@
 namespace ServiceLib.Models;
 
 [Serializable]
-public class ProfileItemModel : ProfileItem
+public class ProfileItemModel : ReactiveObject
 {
     public bool IsActive { get; set; }
+    public string IndexId { get; set; }
+    public EConfigType ConfigType { get; set; }
+    public string Remarks { get; set; }
+    public string Address { get; set; }
+    public int Port { get; set; }
+    public string Network { get; set; }
+    public string StreamSecurity { get; set; }
+    public string Subid { get; set; }
     public string SubRemarks { get; set; }
+    public int Sort { get; set; }
 
     [Reactive]
     public int Delay { get; set; }
 
     public decimal Speed { get; set; }
-    public int Sort { get; set; }
 
     [Reactive]
     public string DelayVal { get; set; }
@@ -29,4 +37,15 @@ public class ProfileItemModel : ProfileItem
 
     [Reactive]
     public string TotalDown { get; set; }
+
+    public string GetSummary()
+    {
+        var summary = $"[{ConfigType}] {Remarks}";
+        if (!ConfigType.IsComplexType())
+        {
+            summary += $"({Address}:{Port})";
+        }
+
+        return summary;
+    }
 }

v2rayN/ServiceLib/Resx/ResUI.Designer.cs

@@ -1680,6 +1680,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Configuration item preview 的本地化字符串。
+        /// </summary>
+        public static string menuServerListPreview {
+            get {
+                return ResourceManager.GetString("menuServerListPreview", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 Configuration 的本地化字符串。
         /// </summary>

v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx

@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.fr.resx

@@ -1665,4 +1665,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.hu.resx

@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.resx

@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.ru.resx

@@ -1668,4 +1668,7 @@ The "Get Certificate" action may fail if a self-signed certificate is used or if
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx

@@ -1665,4 +1665,7 @@
   <data name="TbHopInt7" xml:space="preserve">
     <value>端口跳跃间隔</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>子配置项预览</value>
+  </data>
 </root>

v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx

@@ -1665,4 +1665,7 @@
   <data name="TbHopInt7" xml:space="preserve">
     <value>Port hopping interval</value>
   </data>
+  <data name="menuServerListPreview" xml:space="preserve">
+    <value>Configuration item preview</value>
+  </data>
 </root>

v2rayN/ServiceLib/ViewModels/AddGroupServerViewModel.cs

@@ -27,6 +27,8 @@ public class AddGroupServerViewModel : MyReactiveObject
 
     public IObservableCollection<ProfileItem> ChildItemsObs { get; } = new ObservableCollectionExtended<ProfileItem>();
 
+    public IObservableCollection<ProfileItem> AllProfilePreviewItemsObs { get; } = new ObservableCollectionExtended<ProfileItem>();
+
     //public ReactiveCommand<Unit, Unit> AddCmd { get; }
     public ReactiveCommand<Unit, Unit> RemoveCmd { get; }
 
@@ -182,6 +184,32 @@ public class AddGroupServerViewModel : MyReactiveObject
         await Task.CompletedTask;
     }
 
+    private ProtocolExtraItem GetUpdatedProtocolExtra()
+    {
+        return SelectedSource.GetProtocolExtra() with
+        {
+            ChildItems =
+            Utils.List2String(ChildItemsObs.Where(s => !s.IndexId.IsNullOrEmpty()).Select(s => s.IndexId).ToList()),
+            MultipleLoad = PolicyGroupType switch
+            {
+                var s when s == ResUI.TbLeastPing => EMultipleLoad.LeastPing,
+                var s when s == ResUI.TbFallback => EMultipleLoad.Fallback,
+                var s when s == ResUI.TbRandom => EMultipleLoad.Random,
+                var s when s == ResUI.TbRoundRobin => EMultipleLoad.RoundRobin,
+                var s when s == ResUI.TbLeastLoad => EMultipleLoad.LeastLoad,
+                _ => EMultipleLoad.LeastPing,
+            },
+            SubChildItems = SelectedSubItem?.Id,
+            Filter = Filter,
+        };
+    }
+
+    public async Task UpdatePreviewList()
+    {
+        AllProfilePreviewItemsObs.Clear();
+        AllProfilePreviewItemsObs.AddRange(await GroupProfileManager.GetChildProfileItemsByProtocolExtra(GetUpdatedProtocolExtra()));
+    }
+
     private async Task SaveServerAsync()
     {
         var remarks = SelectedSource.Remarks;
@@ -202,24 +230,11 @@ public class AddGroupServerViewModel : MyReactiveObject
             return;
         }
 
-        SelectedSource.SetProtocolExtra(SelectedSource.GetProtocolExtra() with
+        var protocolExtra = GetUpdatedProtocolExtra();
-        {
-            ChildItems =
-            Utils.List2String(ChildItemsObs.Where(s => !s.IndexId.IsNullOrEmpty()).Select(s => s.IndexId).ToList()),
-            MultipleLoad = PolicyGroupType switch
-            {
-                var s when s == ResUI.TbLeastPing => EMultipleLoad.LeastPing,
-                var s when s == ResUI.TbFallback => EMultipleLoad.Fallback,
-                var s when s == ResUI.TbRandom => EMultipleLoad.Random,
-                var s when s == ResUI.TbRoundRobin => EMultipleLoad.RoundRobin,
-                var s when s == ResUI.TbLeastLoad => EMultipleLoad.LeastLoad,
-                _ => EMultipleLoad.LeastPing,
-            },
-            SubChildItems = SelectedSubItem?.Id,
-            Filter = Filter,
-        });
 
-        var hasCycle = await GroupProfileManager.HasCycle(SelectedSource.IndexId, SelectedSource.GetProtocolExtra());
+        SelectedSource.SetProtocolExtra(protocolExtra);
+
+        var hasCycle = await GroupProfileManager.HasCycle(SelectedSource.IndexId, protocolExtra);
         if (hasCycle)
         {
             NoticeManager.Instance.Enqueue(string.Format(ResUI.GroupSelfReference, remarks));

v2rayN/ServiceLib/ViewModels/AddServerViewModel.cs

@@ -49,12 +49,15 @@ public class AddServerViewModel : MyReactiveObject
 
     [Reactive]
     public string WgPublicKey { get; set; }
+
     //[Reactive]
     //public string WgPresharedKey { get; set; }
     [Reactive]
     public string WgInterfaceAddress { get; set; }
+
     [Reactive]
     public string WgReserved { get; set; }
+
     [Reactive]
     public int WgMtu { get; set; }
 

v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs

@@ -200,7 +200,7 @@ public class ProfilesSelectViewModel : MyReactiveObject
 
     private async Task<List<ProfileItemModel>?> GetProfileItemsEx(string subid, string filter)
     {
-        var lstModel = await AppManager.Instance.ProfileItems(_subIndexId, filter);
+        var lstModel = await AppManager.Instance.ProfileModels(_subIndexId, filter);
         lstModel = (from t in lstModel
                     select new ProfileItemModel
                     {

v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs

@@ -428,7 +428,7 @@ public class ProfilesViewModel : MyReactiveObject
 
     private async Task<List<ProfileItemModel>?> GetProfileItemsEx(string subid, string filter)
     {
-        var lstModel = await AppManager.Instance.ProfileItems(_config.SubIndexId, filter);
+        var lstModel = await AppManager.Instance.ProfileModels(_config.SubIndexId, filter);
 
         await ConfigHandler.SetDefaultServer(_config, lstModel);
 

v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs

@@ -303,7 +303,7 @@ public class StatusBarViewModel : MyReactiveObject
 
     private async Task RefreshServersMenu()
     {
-        var lstModel = await AppManager.Instance.ProfileItems(_config.SubIndexId, "");
+        var lstModel = await AppManager.Instance.ProfileModels(_config.SubIndexId, "");
 
         Servers.Clear();
         if (lstModel.Count > _config.GuiItem.TrayMenuServersLimit)
@@ -315,7 +315,7 @@ public class StatusBarViewModel : MyReactiveObject
         BlServers = true;
         for (var k = 0; k < lstModel.Count; k++)
         {
-            ProfileItem it = lstModel[k];
+            var it = lstModel[k];
             var name = it.GetSummary();
 
             var item = new ComboItem() { ID = it.IndexId, Text = name };

v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml

@@ -88,7 +88,10 @@
             </Grid>
         </Grid>
 
-        <TabControl HorizontalContentAlignment="Stretch" DockPanel.Dock="Top">
+        <TabControl
+            x:Name="tabControl"
+            HorizontalContentAlignment="Stretch"
+            DockPanel.Dock="Top">
             <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerList}">
                 <Grid
                     Margin="{StaticResource Margin8}"
@@ -134,7 +137,6 @@
             <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerList2}">
                 <DataGrid
                     x:Name="lstChild"
-                    Grid.Row="1"
                     AutoGenerateColumns="False"
                     Background="Transparent"
                     BorderThickness="1"
@@ -204,6 +206,48 @@
                     </DataGrid.Columns>
                 </DataGrid>
             </TabItem>
+            <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerListPreview}">
+                <DataGrid
+                    x:Name="lstPreviewChild"
+                    AutoGenerateColumns="False"
+                    Background="Transparent"
+                    BorderThickness="1"
+                    CanUserReorderColumns="False"
+                    CanUserResizeColumns="True"
+                    CanUserSortColumns="False"
+                    GridLinesVisibility="All"
+                    HeadersVisibility="Column"
+                    IsReadOnly="True"
+                    ItemsSource="{Binding AllProfilePreviewItemsObs}"
+                    SelectionMode="Extended">
+                    <DataGrid.Columns>
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding ConfigType}"
+                            Header="{x:Static resx:ResUI.LvServiceType}" />
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding Remarks}"
+                            Header="{x:Static resx:ResUI.LvRemarks}" />
+                        <DataGridTextColumn
+                            Width="120"
+                            Binding="{Binding Address}"
+                            Header="{x:Static resx:ResUI.LvAddress}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Port}"
+                            Header="{x:Static resx:ResUI.LvPort}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Network}"
+                            Header="{x:Static resx:ResUI.LvTransportProtocol}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding StreamSecurity}"
+                            Header="{x:Static resx:ResUI.LvTLS}" />
+                    </DataGrid.Columns>
+                </DataGrid>
+            </TabItem>
         </TabControl>
     </DockPanel>
 </Window>

v2rayN/v2rayN.Desktop/Views/AddGroupServerWindow.axaml.cs

@@ -16,6 +16,7 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
         Loaded += Window_Loaded;
         btnCancel.Click += (s, e) => Close();
         lstChild.SelectionChanged += LstChild_SelectionChanged;
+        tabControl.SelectionChanged += TabControl_SelectionChanged;
 
         ViewModel = new AddGroupServerViewModel(profileItem, UpdateViewHandler);
 
@@ -38,6 +39,10 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
             case EConfigType.ProxyChain:
                 Title = ResUI.TbConfigTypeProxyChain;
                 gridPolicyGroup.IsVisible = false;
+                if (tabControl.Items.Count > 0)
+                {
+                    tabControl.Items.RemoveAt(0);
+                }
                 break;
         }
 
@@ -50,7 +55,6 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
             this.Bind(ViewModel, vm => vm.SelectedSubItem, v => v.cmbSubChildItems.SelectedItem).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.Filter, v => v.txtFilter.Text).DisposeWith(disposables);
 
-            this.OneWayBind(ViewModel, vm => vm.ChildItemsObs, v => v.lstChild.ItemsSource).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedChild, v => v.lstChild.SelectedItem).DisposeWith(disposables);
 
             this.BindCommand(ViewModel, vm => vm.RemoveCmd, v => v.menuRemoveChildServer).DisposeWith(disposables);
@@ -167,4 +171,29 @@ public partial class AddGroupServerWindow : WindowBase<AddGroupServerViewModel>
             ViewModel.SelectedChildren = lstChild.SelectedItems.Cast<ProfileItem>().ToList();
         }
     }
+
+    private async void TabControl_SelectionChanged(object? sender, SelectionChangedEventArgs e)
+    {
+        try
+        {
+            if (e.Source is not TabControl tc)
+            {
+                return;
+            }
+            if (!(tc.SelectedIndex == tc.Items.Count - 1 && tc.Items.Count > 0))
+            {
+                return;
+            }
+            if (ViewModel == null)
+            {
+                return;
+            }
+
+            await ViewModel.UpdatePreviewList();
+        }
+        catch
+        {
+            // ignored
+        }
+    }
 }

v2rayN/v2rayN/Views/AddGroupServerWindow.xaml

@@ -135,6 +135,7 @@
         </Grid>
 
         <TabControl
+            x:Name="tabControl"
             Margin="{StaticResource Margin8}"
             HorizontalContentAlignment="Left"
             DockPanel.Dock="Top">
@@ -272,6 +273,47 @@
                     </DataGrid.Columns>
                 </DataGrid>
             </TabItem>
+            <TabItem HorizontalAlignment="Left" Header="{x:Static resx:ResUI.menuServerListPreview}">
+                <DataGrid
+                    x:Name="lstPreviewChild"
+                    AutoGenerateColumns="False"
+                    BorderThickness="1"
+                    CanUserAddRows="False"
+                    CanUserResizeRows="False"
+                    CanUserSortColumns="False"
+                    EnableRowVirtualization="True"
+                    GridLinesVisibility="All"
+                    HeadersVisibility="Column"
+                    IsReadOnly="True"
+                    Style="{StaticResource DefDataGrid}">
+                    <DataGrid.Columns>
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding ConfigType}"
+                            Header="{x:Static resx:ResUI.LvServiceType}" />
+                        <DataGridTextColumn
+                            Width="150"
+                            Binding="{Binding Remarks}"
+                            Header="{x:Static resx:ResUI.LvRemarks}" />
+                        <DataGridTextColumn
+                            Width="120"
+                            Binding="{Binding Address}"
+                            Header="{x:Static resx:ResUI.LvAddress}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Port}"
+                            Header="{x:Static resx:ResUI.LvPort}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding Network}"
+                            Header="{x:Static resx:ResUI.LvTransportProtocol}" />
+                        <DataGridTextColumn
+                            Width="100"
+                            Binding="{Binding StreamSecurity}"
+                            Header="{x:Static resx:ResUI.LvTLS}" />
+                    </DataGrid.Columns>
+                </DataGrid>
+            </TabItem>
         </TabControl>
     </DockPanel>
 </base:WindowBase>

v2rayN/v2rayN/Views/AddGroupServerWindow.xaml.cs

@@ -11,6 +11,7 @@ public partial class AddGroupServerWindow
         PreviewKeyDown += AddGroupServerWindow_PreviewKeyDown;
         lstChild.SelectionChanged += LstChild_SelectionChanged;
         menuSelectAllChild.Click += MenuSelectAllChild_Click;
+        tabControl.SelectionChanged += TabControl_SelectionChanged;
 
         ViewModel = new AddGroupServerViewModel(profileItem, UpdateViewHandler);
 
@@ -33,6 +34,10 @@ public partial class AddGroupServerWindow
             case EConfigType.ProxyChain:
                 Title = ResUI.TbConfigTypeProxyChain;
                 gridPolicyGroup.Visibility = Visibility.Collapsed;
+                if (tabControl.Items.Count > 0)
+                {
+                    tabControl.Items.RemoveAt(0);
+                }
                 break;
         }
 
@@ -48,6 +53,8 @@ public partial class AddGroupServerWindow
             this.OneWayBind(ViewModel, vm => vm.ChildItemsObs, v => v.lstChild.ItemsSource).DisposeWith(disposables);
             this.Bind(ViewModel, vm => vm.SelectedChild, v => v.lstChild.SelectedItem).DisposeWith(disposables);
 
+            this.OneWayBind(ViewModel, vm => vm.AllProfilePreviewItemsObs, v => v.lstPreviewChild.ItemsSource).DisposeWith(disposables);
+
             this.BindCommand(ViewModel, vm => vm.RemoveCmd, v => v.menuRemoveChildServer).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.MoveTopCmd, v => v.menuMoveTop).DisposeWith(disposables);
             this.BindCommand(ViewModel, vm => vm.MoveUpCmd, v => v.menuMoveUp).DisposeWith(disposables);
@@ -148,4 +155,29 @@ public partial class AddGroupServerWindow
     {
         lstChild.SelectAll();
     }
+
+    private async void TabControl_SelectionChanged(object? sender, System.Windows.Controls.SelectionChangedEventArgs e)
+    {
+        try
+        {
+            if (e.Source is not System.Windows.Controls.TabControl tc)
+            {
+                return;
+            }
+            if (!(tc.SelectedIndex == tc.Items.Count - 1 && tc.Items.Count > 0))
+            {
+                return;
+            }
+            if (ViewModel == null)
+            {
+                return;
+            }
+
+            await ViewModel.UpdatePreviewList();
+        }
+        catch
+        {
+            // ignored
+        }
+    }
 }