Merge pull request #4478 from Bond-009/chararray

Don't allocate single char arrays when possible

29 files changed, 57 insertions, 57 deletions

diff --git a/DvdLib/Ifo/Dvd.cs b/DvdLib/Ifo/Dvd.cs
index 361319625..b4a11ed5d 100644
--- a/DvdLib/Ifo/Dvd.cs
+++ b/DvdLib/Ifo/Dvd.cs
@@ -31,7 +31,7 @@ namespace DvdLib.Ifo
                         continue;
                     }
 
-                    var nums = ifo.Name.Split(new[] { '_' }, StringSplitOptions.RemoveEmptyEntries);
+                    var nums = ifo.Name.Split('_', StringSplitOptions.RemoveEmptyEntries);
                     if (nums.Length >= 2 && ushort.TryParse(nums[1], out var ifoNumber))
                     {
                         ReadVTS(ifoNumber, ifo.FullName);
diff --git a/Emby.Dlna/Didl/Filter.cs b/Emby.Dlna/Didl/Filter.cs
index b58fdff2c..d703f043e 100644
--- a/Emby.Dlna/Didl/Filter.cs
+++ b/Emby.Dlna/Didl/Filter.cs
@@ -18,7 +18,7 @@ namespace Emby.Dlna.Didl
         {
             _all = string.Equals(filter, "*", StringComparison.OrdinalIgnoreCase);
 
-            _fields = (filter ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+            _fields = (filter ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries);
         }
 
         public bool Contains(string field)
diff --git a/Emby.Dlna/Eventing/DlnaEventManager.cs b/Emby.Dlna/Eventing/DlnaEventManager.cs
index 770d56c30..b6e45c50e 100644
--- a/Emby.Dlna/Eventing/DlnaEventManager.cs
+++ b/Emby.Dlna/Eventing/DlnaEventManager.cs
@@ -83,7 +83,7 @@ namespace Emby.Dlna.Eventing
             if (!string.IsNullOrEmpty(header))
             {
                 // Starts with SECOND-
-                header = header.Split('-').Last();
+                header = header.Split('-')[^1];
 
                 if (int.TryParse(header, NumberStyles.Integer, _usCulture, out var val))
                 {
diff --git a/Emby.Server.Implementations/ApplicationHost.cs b/Emby.Server.Implementations/ApplicationHost.cs
index becd3012a..ad3c19618 100644
--- a/Emby.Server.Implementations/ApplicationHost.cs
+++ b/Emby.Server.Implementations/ApplicationHost.cs
@@ -1033,7 +1033,7 @@ namespace Emby.Server.Implementations
                     else
                     {
                         // No metafile, so lets see if the folder is versioned.
-                        metafile = dir.Split(new[] { Path.DirectorySeparatorChar }, StringSplitOptions.RemoveEmptyEntries)[^1];
+                        metafile = dir.Split(Path.DirectorySeparatorChar, StringSplitOptions.RemoveEmptyEntries)[^1];
 
                         int versionIndex = dir.LastIndexOf('_');
                         if (versionIndex != -1 && Version.TryParse(dir.Substring(versionIndex + 1), out Version parsedVersion))
diff --git a/Emby.Server.Implementations/Data/SqliteItemRepository.cs b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
index 0761b64bd..638c7a9b4 100644
--- a/Emby.Server.Implementations/Data/SqliteItemRepository.cs
+++ b/Emby.Server.Implementations/Data/SqliteItemRepository.cs
@@ -1007,7 +1007,7 @@ namespace Emby.Server.Implementations.Data
                 return;
             }
 
-            var parts = value.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+            var parts = value.Split('|', StringSplitOptions.RemoveEmptyEntries);
 
             foreach (var part in parts)
             {
@@ -1057,7 +1057,7 @@ namespace Emby.Server.Implementations.Data
                 return;
             }
 
-            var parts = value.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+            var parts = value.Split('|' , StringSplitOptions.RemoveEmptyEntries);
             var list = new List<ItemImageInfo>();
             foreach (var part in parts)
             {
@@ -1096,7 +1096,7 @@ namespace Emby.Server.Implementations.Data
 
         public ItemImageInfo ItemImageInfoFromValueString(string value)
         {
-            var parts = value.Split(new[] { '*' }, StringSplitOptions.None);
+            var parts = value.Split('*', StringSplitOptions.None);
 
             if (parts.Length < 3)
             {
@@ -1532,7 +1532,7 @@ namespace Emby.Server.Implementations.Data
             {
                 if (!reader.IsDBNull(index))
                 {
-                    item.Genres = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    item.Genres = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries);
                 }
 
                 index++;
@@ -1593,7 +1593,7 @@ namespace Emby.Server.Implementations.Data
                 {
                     IEnumerable<MetadataField> GetLockedFields(string s)
                     {
-                        foreach (var i in s.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries))
+                        foreach (var i in s.Split('|', StringSplitOptions.RemoveEmptyEntries))
                         {
                             if (Enum.TryParse(i, true, out MetadataField parsedValue))
                             {
@@ -1612,7 +1612,7 @@ namespace Emby.Server.Implementations.Data
             {
                 if (!reader.IsDBNull(index))
                 {
-                    item.Studios = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    item.Studios = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries);
                 }
 
                 index++;
@@ -1622,7 +1622,7 @@ namespace Emby.Server.Implementations.Data
             {
                 if (!reader.IsDBNull(index))
                 {
-                    item.Tags = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    item.Tags = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries);
                 }
 
                 index++;
@@ -1636,7 +1636,7 @@ namespace Emby.Server.Implementations.Data
                     {
                         IEnumerable<TrailerType> GetTrailerTypes(string s)
                         {
-                            foreach (var i in s.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries))
+                            foreach (var i in s.Split('|', StringSplitOptions.RemoveEmptyEntries))
                             {
                                 if (Enum.TryParse(i, true, out TrailerType parsedValue))
                                 {
@@ -1811,7 +1811,7 @@ namespace Emby.Server.Implementations.Data
             {
                 if (!reader.IsDBNull(index))
                 {
-                    item.ProductionLocations = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries).ToArray();
+                    item.ProductionLocations = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries).ToArray();
                 }
 
                 index++;
@@ -1848,14 +1848,14 @@ namespace Emby.Server.Implementations.Data
             {
                 if (item is IHasArtist hasArtists && !reader.IsDBNull(index))
                 {
-                    hasArtists.Artists = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    hasArtists.Artists = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries);
                 }
 
                 index++;
 
                 if (item is IHasAlbumArtist hasAlbumArtists && !reader.IsDBNull(index))
                 {
-                    hasAlbumArtists.AlbumArtists = reader.GetString(index).Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    hasAlbumArtists.AlbumArtists = reader.GetString(index).Split('|', StringSplitOptions.RemoveEmptyEntries);
                 }
 
                 index++;
@@ -5611,7 +5611,7 @@ where AncestorIdText not null and ItemValues.Value not null and ItemValues.Type
                 return counts;
             }
 
-            var allTypes = typeString.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries)
+            var allTypes = typeString.Split('|', StringSplitOptions.RemoveEmptyEntries)
                 .ToLookup(x => x);
 
             foreach (var type in allTypes)
diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index 73502c2c9..f3e3a6397 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -275,7 +275,7 @@ namespace Emby.Server.Implementations.Dto
                     continue;
                 }
 
-                var containers = container.Split(new[] { ',' });
+                var containers = container.Split(',');
                 if (containers.Length < 2)
                 {
                     continue;
diff --git a/Emby.Server.Implementations/HttpServer/Security/AuthorizationContext.cs b/Emby.Server.Implementations/HttpServer/Security/AuthorizationContext.cs
index e733c9092..fdf2e3908 100644
--- a/Emby.Server.Implementations/HttpServer/Security/AuthorizationContext.cs
+++ b/Emby.Server.Implementations/HttpServer/Security/AuthorizationContext.cs
@@ -245,7 +245,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
                 return null;
             }
 
-            var parts = authorizationHeader.Split(new[] { ' ' }, 2);
+            var parts = authorizationHeader.Split(' ', 2);
 
             // There should be at least to parts
             if (parts.Length != 2)
@@ -269,11 +269,11 @@ namespace Emby.Server.Implementations.HttpServer.Security
 
             foreach (var item in parts)
             {
-                var param = item.Trim().Split(new[] { '=' }, 2);
+                var param = item.Trim().Split('=', 2);
 
                 if (param.Length == 2)
                 {
-                    var value = NormalizeValue(param[1].Trim(new[] { '"' }));
+                    var value = NormalizeValue(param[1].Trim('"'));
                     result[param[0]] = value;
                 }
             }
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index f16eda1ec..7074382b6 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -2705,7 +2705,7 @@ namespace Emby.Server.Implementations.Library
 
             var videos = videoListResolver.Resolve(fileSystemChildren);
 
-            var currentVideo = videos.FirstOrDefault(i => string.Equals(owner.Path, i.Files.First().Path, StringComparison.OrdinalIgnoreCase));
+            var currentVideo = videos.FirstOrDefault(i => string.Equals(owner.Path, i.Files[0].Path, StringComparison.OrdinalIgnoreCase));
 
             if (currentVideo != null)
             {
diff --git a/Emby.Server.Implementations/Library/MediaSourceManager.cs b/Emby.Server.Implementations/Library/MediaSourceManager.cs
index 376a15570..928f5f88e 100644
--- a/Emby.Server.Implementations/Library/MediaSourceManager.cs
+++ b/Emby.Server.Implementations/Library/MediaSourceManager.cs
@@ -849,7 +849,7 @@ namespace Emby.Server.Implementations.Library
                 throw new ArgumentException("Key can't be empty.", nameof(key));
             }
 
-            var keys = key.Split(new[] { LiveStreamIdDelimeter }, 2);
+            var keys = key.Split(LiveStreamIdDelimeter, 2);
 
             var provider = _providers.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N", CultureInfo.InvariantCulture), keys[0], StringComparison.OrdinalIgnoreCase));
 
diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
index 70be52411..2c4497c69 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
@@ -201,7 +201,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                     continue;
                 }
 
-                var firstMedia = resolvedItem.Files.First();
+                var firstMedia = resolvedItem.Files[0];
 
                 var libraryItem = new T
                 {
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
index 5b9c5761e..8c9bb6ba0 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -2208,7 +2208,7 @@ namespace Emby.Server.Implementations.LiveTv
         /// <returns>Task.</returns>
         public Task ResetTuner(string id, CancellationToken cancellationToken)
         {
-            var parts = id.Split(new[] { '_' }, 2);
+            var parts = id.Split('_', 2);
 
             var service = _services.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N", CultureInfo.InvariantCulture), parts[0], StringComparison.OrdinalIgnoreCase));
 
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
index 0333e723b..78e62ff0a 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/LiveStream.cs
@@ -182,7 +182,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
             if (string.IsNullOrEmpty(currentFile))
             {
-                return (files.Last(), true);
+                return (files[^1], true);
             }
 
             var nextIndex = files.FindIndex(i => string.Equals(i, currentFile, StringComparison.OrdinalIgnoreCase)) + 1;
diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs
index c064e2fe6..7c13d45e9 100644
--- a/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs
+++ b/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs
@@ -163,7 +163,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
         private string GetChannelNumber(string extInf, Dictionary<string, string> attributes, string mediaUrl)
         {
-            var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+            var nameParts = extInf.Split(',', StringSplitOptions.RemoveEmptyEntries);
             var nameInExtInf = nameParts.Length > 1 ? nameParts[^1].AsSpan().Trim() : ReadOnlySpan<char>.Empty;
 
             string numberString = null;
@@ -273,8 +273,8 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
         private static string GetChannelName(string extInf, Dictionary<string, string> attributes)
         {
-            var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
-            var nameInExtInf = nameParts.Length > 1 ? nameParts.Last().Trim() : null;
+            var nameParts = extInf.Split(',', StringSplitOptions.RemoveEmptyEntries);
+            var nameInExtInf = nameParts.Length > 1 ? nameParts[^1].Trim() : null;
 
             // Check for channel number with the format from SatIp
             // #EXTINF:0,84. VOX Schweiz
diff --git a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
index 56f4133a0..3a9e28458 100644
--- a/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/ScheduledTaskWorker.cs
@@ -653,7 +653,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                     try
                     {
                         _logger.LogInformation(Name + ": Waiting on Task");
-                        var exited = Task.WaitAll(new[] { task }, 2000);
+                        var exited = task.Wait(2000);
 
                         if (exited)
                         {
diff --git a/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs b/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
index 8439f8a99..171e44258 100644
--- a/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
+++ b/Emby.Server.Implementations/ScheduledTasks/Tasks/ChapterImagesTask.cs
@@ -106,7 +106,7 @@ namespace Emby.Server.Implementations.ScheduledTasks
                 try
                 {
                     previouslyFailedImages = File.ReadAllText(failHistoryPath)
-                        .Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries)
+                        .Split('|', StringSplitOptions.RemoveEmptyEntries)
                         .ToList();
                 }
                 catch (IOException)
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index 2a567c846..008bb58d1 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -78,8 +78,8 @@ namespace Jellyfin.Api.Controllers
             var query = new InternalItemsQuery
             {
                 User = user,
-                MediaTypes = (mediaTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
-                IncludeItemTypes = (includeItemTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
+                MediaTypes = (mediaTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
+                IncludeItemTypes = (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
                 Recursive = true,
                 EnableTotalRecordCount = false,
                 DtoOptions = new DtoOptions
@@ -168,7 +168,7 @@ namespace Jellyfin.Api.Controllers
             var genreQuery = new InternalItemsQuery(user)
             {
                 IncludeItemTypes =
-                    (includeItemTypes ?? string.Empty).Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries),
+                    (includeItemTypes ?? string.Empty).Split(',', StringSplitOptions.RemoveEmptyEntries),
                 DtoOptions = new DtoOptions
                 {
                     Fields = Array.Empty<ItemFields>(),
diff --git a/Jellyfin.Api/Controllers/RemoteImageController.cs b/Jellyfin.Api/Controllers/RemoteImageController.cs
index 5f095443b..331277aec 100644
--- a/Jellyfin.Api/Controllers/RemoteImageController.cs
+++ b/Jellyfin.Api/Controllers/RemoteImageController.cs
@@ -249,7 +249,7 @@ namespace Jellyfin.Api.Controllers
         {
             var httpClient = _httpClientFactory.CreateClient(NamedClient.Default);
             using var response = await httpClient.GetAsync(url).ConfigureAwait(false);
-            var ext = response.Content.Headers.ContentType.MediaType.Split('/').Last();
+            var ext = response.Content.Headers.ContentType.MediaType.Split('/')[^1];
             var fullCachePath = GetFullCachePath(urlHash + "." + ext);
 
             Directory.CreateDirectory(Path.GetDirectoryName(fullCachePath));
diff --git a/Jellyfin.Api/Helpers/RequestHelpers.cs b/Jellyfin.Api/Helpers/RequestHelpers.cs
index 13d6da317..f06f038ab 100644
--- a/Jellyfin.Api/Helpers/RequestHelpers.cs
+++ b/Jellyfin.Api/Helpers/RequestHelpers.cs
@@ -74,7 +74,7 @@ namespace Jellyfin.Api.Helpers
             }
 
             return removeEmpty
-                ? value.Split(new[] { separator }, StringSplitOptions.RemoveEmptyEntries)
+                ? value.Split(separator, StringSplitOptions.RemoveEmptyEntries)
                 : value.Split(separator);
         }
 
diff --git a/Jellyfin.Api/Helpers/StreamingHelpers.cs b/Jellyfin.Api/Helpers/StreamingHelpers.cs
index f4ec29bde..4e6e981be 100644
--- a/Jellyfin.Api/Helpers/StreamingHelpers.cs
+++ b/Jellyfin.Api/Helpers/StreamingHelpers.cs
@@ -84,7 +84,7 @@ namespace Jellyfin.Api.Helpers
 
             streamingRequest.StreamOptions = ParseStreamOptions(httpRequest.Query);
 
-            var url = httpRequest.Path.Value.Split('.').Last();
+            var url = httpRequest.Path.Value.Split('.')[^1];
 
             if (string.IsNullOrEmpty(streamingRequest.AudioCodec))
             {
diff --git a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs
index b24a49761..06a29a0db 100644
--- a/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs
+++ b/MediaBrowser.Common/Json/Converters/JsonCommaDelimitedArrayConverter.cs
@@ -26,7 +26,7 @@ namespace MediaBrowser.Common.Json.Converters
         {
             if (reader.TokenType == JsonTokenType.String)
             {
-                var stringEntries = reader.GetString()?.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+                var stringEntries = reader.GetString()?.Split(',', StringSplitOptions.RemoveEmptyEntries);
                 if (stringEntries == null || stringEntries.Length == 0)
                 {
                     return Array.Empty<T>();
@@ -71,4 +71,4 @@ namespace MediaBrowser.Common.Json.Converters
             JsonSerializer.Serialize(writer, value, options);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/MediaBrowser.Controller/MediaEncoding/JobLogger.cs b/MediaBrowser.Controller/MediaEncoding/JobLogger.cs
index ac520c5c4..cc8820f39 100644
--- a/MediaBrowser.Controller/MediaEncoding/JobLogger.cs
+++ b/MediaBrowser.Controller/MediaEncoding/JobLogger.cs
@@ -93,7 +93,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
                 else if (part.StartsWith("fps=", StringComparison.OrdinalIgnoreCase))
                 {
-                    var rate = part.Split(new[] { '=' }, 2)[^1];
+                    var rate = part.Split('=', 2)[^1];
 
                     if (float.TryParse(rate, NumberStyles.Any, _usCulture, out var val))
                     {
@@ -103,7 +103,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 else if (state.RunTimeTicks.HasValue &&
                     part.StartsWith("time=", StringComparison.OrdinalIgnoreCase))
                 {
-                    var time = part.Split(new[] { '=' }, 2).Last();
+                    var time = part.Split('=', 2)[^1];
 
                     if (TimeSpan.TryParse(time, _usCulture, out var val))
                     {
@@ -116,7 +116,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
                 else if (part.StartsWith("size=", StringComparison.OrdinalIgnoreCase))
                 {
-                    var size = part.Split(new[] { '=' }, 2).Last();
+                    var size = part.Split('=', 2)[^1];
 
                     int? scale = null;
                     if (size.IndexOf("kb", StringComparison.OrdinalIgnoreCase) != -1)
@@ -135,7 +135,7 @@ namespace MediaBrowser.Controller.MediaEncoding
                 }
                 else if (part.StartsWith("bitrate=", StringComparison.OrdinalIgnoreCase))
                 {
-                    var rate = part.Split(new[] { '=' }, 2).Last();
+                    var rate = part.Split('=', 2)[^1];
 
                     int? scale = null;
                     if (rate.IndexOf("kbits/s", StringComparison.OrdinalIgnoreCase) != -1)
diff --git a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
index cdeefbbbd..15a70e2e7 100644
--- a/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
+++ b/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs
@@ -149,7 +149,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 var iTunEXTC = FFProbeHelpers.GetDictionaryValue(tags, "iTunEXTC");
                 if (!string.IsNullOrWhiteSpace(iTunEXTC))
                 {
-                    var parts = iTunEXTC.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                    var parts = iTunEXTC.Split('|', StringSplitOptions.RemoveEmptyEntries);
                     // Example
                     // mpaa|G|100|For crude humor
                     if (parts.Length > 1)
@@ -1139,7 +1139,7 @@ namespace MediaBrowser.MediaEncoding.Probing
                 return null;
             }
 
-            return value.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries)
+            return value.Split('/', StringSplitOptions.RemoveEmptyEntries)
                 .Select(i => i.Trim())
                 .FirstOrDefault(i => !string.IsNullOrWhiteSpace(i));
         }
diff --git a/MediaBrowser.Model/Dlna/ContainerProfile.cs b/MediaBrowser.Model/Dlna/ContainerProfile.cs
index f77d9b267..09afa64bb 100644
--- a/MediaBrowser.Model/Dlna/ContainerProfile.cs
+++ b/MediaBrowser.Model/Dlna/ContainerProfile.cs
@@ -34,7 +34,7 @@ namespace MediaBrowser.Model.Dlna
                 return Array.Empty<string>();
             }
 
-            return value.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+            return value.Split(',', StringSplitOptions.RemoveEmptyEntries);
         }
 
         public bool ContainsContainer(string container)
diff --git a/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs b/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
index 8b73ecbd4..50e3374f7 100644
--- a/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
+++ b/MediaBrowser.Model/Dlna/ContentFeatureBuilder.cs
@@ -186,7 +186,7 @@ namespace MediaBrowser.Model.Dlna
 
             if (mediaProfile != null && !string.IsNullOrEmpty(mediaProfile.OrgPn))
             {
-                orgPnValues.AddRange(mediaProfile.OrgPn.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries));
+                orgPnValues.AddRange(mediaProfile.OrgPn.Split(',', StringSplitOptions.RemoveEmptyEntries));
             }
             else
             {
diff --git a/MediaBrowser.Model/Dlna/StreamBuilder.cs b/MediaBrowser.Model/Dlna/StreamBuilder.cs
index 4959a9b92..13234c381 100644
--- a/MediaBrowser.Model/Dlna/StreamBuilder.cs
+++ b/MediaBrowser.Model/Dlna/StreamBuilder.cs
@@ -1647,7 +1647,7 @@ namespace MediaBrowser.Model.Dlna
 
                                 // strip spaces to avoid having to encode
                                 var values = value
-                                    .Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
+                                    .Split('|', StringSplitOptions.RemoveEmptyEntries);
 
                                 if (condition.Condition == ProfileConditionType.Equals || condition.Condition == ProfileConditionType.EqualsAny)
                                 {
diff --git a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
index 32dab60a6..9eed6172d 100644
--- a/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
+++ b/MediaBrowser.Providers/Plugins/Omdb/OmdbProvider.cs
@@ -391,7 +391,7 @@ namespace MediaBrowser.Providers.Plugins.Omdb
                 item.Genres = Array.Empty<string>();
 
                 foreach (var genre in result.Genre
-                    .Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
+                    .Split(',', StringSplitOptions.RemoveEmptyEntries)
                     .Select(i => i.Trim())
                     .Where(i => !string.IsNullOrWhiteSpace(i)))
                 {
diff --git a/MediaBrowser.Providers/Plugins/TheTvdb/TvdbSeriesProvider.cs b/MediaBrowser.Providers/Plugins/TheTvdb/TvdbSeriesProvider.cs
index b34e52235..e5a3e9a6a 100644
--- a/MediaBrowser.Providers/Plugins/TheTvdb/TvdbSeriesProvider.cs
+++ b/MediaBrowser.Providers/Plugins/TheTvdb/TvdbSeriesProvider.cs
@@ -170,7 +170,7 @@ namespace MediaBrowser.Providers.Plugins.TheTvdb
                 _logger.LogError(e, "Failed to retrieve series with remote id {RemoteId}", id);
             }
 
-            return result?.Data.First().Id.ToString();
+            return result?.Data[0].Id.ToString(CultureInfo.InvariantCulture);
         }
 
         /// <summary>
diff --git a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
index f3fbe2d12..47e9d5ee8 100644
--- a/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
+++ b/MediaBrowser.Providers/Subtitles/SubtitleManager.cs
@@ -147,7 +147,7 @@ namespace MediaBrowser.Providers.Subtitles
             string subtitleId,
             CancellationToken cancellationToken)
         {
-            var parts = subtitleId.Split(new[] { '_' }, 2);
+            var parts = subtitleId.Split('_', 2);
             var provider = GetProvider(parts[0]);
 
             try
@@ -329,7 +329,7 @@ namespace MediaBrowser.Providers.Subtitles
                 Index = index,
                 ItemId = item.Id,
                 Type = MediaStreamType.Subtitle
-            }).First();
+            })[0];
 
             var path = stream.Path;
             _monitor.ReportFileSystemChangeBeginning(path);
@@ -349,10 +349,10 @@ namespace MediaBrowser.Providers.Subtitles
         /// <inheritdoc />
         public Task<SubtitleResponse> GetRemoteSubtitles(string id, CancellationToken cancellationToken)
         {
-            var parts = id.Split(new[] { '_' }, 2);
+            var parts = id.Split('_', 2);
 
             var provider = GetProvider(parts[0]);
-            id = parts.Last();
+            id = parts[^1];
 
             return provider.GetSubtitles(id, cancellationToken);
         }
diff --git a/RSSDP/HttpParserBase.cs b/RSSDP/HttpParserBase.cs
index a40612bc2..11202940e 100644
--- a/RSSDP/HttpParserBase.cs
+++ b/RSSDP/HttpParserBase.cs
@@ -119,7 +119,7 @@ namespace Rssdp.Infrastructure
             }
             else
             {
-                headersToAddTo.TryAddWithoutValidation(headerName, values.First());
+                headersToAddTo.TryAddWithoutValidation(headerName, values[0]);
             }
         }
 
@@ -151,7 +151,7 @@ namespace Rssdp.Infrastructure
             return lineIndex;
         }
 
-        private IList<string> ParseValues(string headerValue)
+        private List<string> ParseValues(string headerValue)
         {
             // This really should be better and match the HTTP 1.1 spec,
             // but this should actually be good enough for SSDP implementations
@@ -160,7 +160,7 @@ namespace Rssdp.Infrastructure
 
             if (headerValue == "\"\"")
             {
-                values.Add(String.Empty);
+                values.Add(string.Empty);
                 return values;
             }
 
@@ -172,7 +172,7 @@ namespace Rssdp.Infrastructure
             else
             {
                 var segments = headerValue.Split(SeparatorCharacters);
-                if (headerValue.Contains("\""))
+                if (headerValue.Contains('"'))
                 {
                     for (int segmentIndex = 0; segmentIndex < segments.Length; segmentIndex++)
                     {