feat:完善模块化+缩略图模块

Yi.Framework.Net6/Yi.Framework.sln

@@ -83,7 +83,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.RBAC.Application", "src\
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.RBAC.Web", "src\project\rbac\Yi.RBAC.Web\Yi.RBAC.Web.csproj", "{0C031C7D-6F80-4559-977C-AC001036EC44}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.ThumbnailSharp", "src\module\Yi.Framework.ThumbnailSharp\Yi.Framework.ThumbnailSharp.csproj", "{60E54034-792C-4A90-BCDF-4D5FFB45089E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.ImageSharp", "src\module\Yi.Framework.ImageSharp\Yi.Framework.ImageSharp.csproj", "{60E54034-792C-4A90-BCDF-4D5FFB45089E}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.EventBus", "src\module\Yi.Framework.EventBus\Yi.Framework.EventBus.csproj", "{FC559052-36EC-4379-B447-298FAD6045F4}"
 EndProject
@@ -103,7 +103,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.MultiTenancy",
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.DictionaryManager", "src\module\Yi.Framework.DictionaryManager\Yi.Framework.DictionaryManager.csproj", "{8941B30D-698B-477A-8737-43E7B4A8695A}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Yi.Framework.Sms.Aliyun", "src\module\Yi.Framework.Sms.Aliyun\Yi.Framework.Sms.Aliyun.csproj", "{063178CF-C5B9-463C-A8A4-F32B743818E2}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Yi.Framework.Sms.Aliyun", "src\module\Yi.Framework.Sms.Aliyun\Yi.Framework.Sms.Aliyun.csproj", "{063178CF-C5B9-463C-A8A4-F32B743818E2}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Yi.Framework.Net6/src/framework/Yi.Framework.Core/Extensions/ModuleExtensions.cs

@@ -23,9 +23,9 @@ namespace Yi.Framework.Core.Extensions
         public static WebApplicationBuilder UseYiModules(this WebApplicationBuilder builder, Type startType)
         {
             var moduleManager = new ModuleManager(startType);
-            moduleManager.Invoker();
             
-            Assembly[] assemblies2 = moduleManager.ToAssemblyArray();
+           
+            Assembly[] assemblies2 = moduleManager.ToAssemblyArray(moduleManager.Invoker());
             return builder.UseStartupModules(delegate (StartupModulesOptions options)
             {
                 options.DiscoverStartupModules(assemblies2);

Yi.Framework.Net6/src/framework/Yi.Framework.Core/Helper/MimeHelper.cs

@@ -16,7 +16,7 @@ namespace Yi.Framework.Core.Helper
 
         public static List<string> ImageType { get; set; } = new List<string>
         {
-            ".jpg",".png",".jpge",".gif"
+            ".jpg",".png",".jpge"
         };
 
         private static Hashtable _mimeMappingTable;

Yi.Framework.Net6/src/framework/Yi.Framework.Core/Module/ModuleManager.cs

@@ -12,17 +12,30 @@ namespace Yi.Framework.Core.Module
 
     internal class ModuleManager
     {
+        /// <summary>
+        /// 全部程序集
+        /// </summary>
         private List<Type> ResultType = new List<Type>();
+
+        /// <summary>
+        /// 开始程序集
+        /// </summary>
         private Type StartType;
         public ModuleManager(Type startType)
         {
             StartType = startType;
         }
 
+        /// <summary>
+        /// 执行
+        /// </summary>
+        /// <returns></returns>
         public List<Type> Invoker()
         {
             StartBFSNodes(StartType);
-           var result= RemoveDuplicate(ResultType);
+            ResultType= ResultType.Distinct().ToList();
+            var result = StartTopologicalSortNodes().Reverse().ToList();
+
             Logger? _logger = LogManager.Setup().LoadConfigurationFromAssemblyResource(typeof(ModuleManager).Assembly).GetCurrentClassLogger();
             foreach (var r in result)
             {
@@ -33,17 +46,37 @@ namespace Yi.Framework.Core.Module
             return result;
         }
 
-        private Type[]? GetDependsOnType(Type type)
-        {
-            var dependsOnbuild = type.GetCustomAttributes(typeof(DependsOnAttribute), false).FirstOrDefault() as DependsOnAttribute;
-            if (dependsOnbuild is null)
-            {
-                return new Type[0];
-            }
-            return dependsOnbuild.GetDependedTypes();
 
+        private Type[] StartTopologicalSortNodes()
+        {
+            List<TopologicalSortNode<Type>> topologicalSortNodes = new List<TopologicalSortNode<Type>>();
+
+
+            //添加注册到节点
+            foreach (var res in ResultType)
+            {
+                var typeNode = new TopologicalSortNode<Type>(res);
+                topologicalSortNodes.Add(typeNode);
+            }
+
+            Dictionary<Type, TopologicalSortNode<Type>> nodeDic = topologicalSortNodes.ToDictionary(x => x.Data);
+
+
+            //各个节点互相添加依赖
+            foreach (var node in topologicalSortNodes)
+            {
+                GetDependsOnType(node.Data)?.ToList().ForEach(x => node.AddDependent(nodeDic[x]));
+            }
+
+          
+
+            return TopologicalSortNode<Type>.TopologicalSort(topologicalSortNodes).Select(x => x.Data).ToArray();
         }
 
+        /// <summary>
+        /// BFS获取全部程序集
+        /// </summary>
+        /// <param name="node"></param>
         private void StartBFSNodes(Type node)
         {
             ResultType.Add(node);
@@ -57,29 +90,30 @@ namespace Yi.Framework.Core.Module
             }
         }
 
-        private List<Type> RemoveDuplicate(List<Type> array)
+
+        /// <summary>
+        /// 获取模块 需依赖的模块
+        /// </summary>
+        /// <param name="type"></param>
+        /// <returns></returns>
+        private Type[]? GetDependsOnType(Type type)
         {
-            HashSet<Type> s = new HashSet<Type>();
-            List<Type> list = new List<Type>();
-            for (int i = array.Count - 1; i >= 0; i--)
+            var dependsOnbuild = type.GetCustomAttributes(typeof(DependsOnAttribute), false).FirstOrDefault() as DependsOnAttribute;
+            if (dependsOnbuild is null)
             {
-                if (!s.Contains(array[i]))
-                {
-                    s.Add(array[i]);
-                    list.Add(array[i]);
-                }
+                return new Type[0];
             }
-            ResultType = list;
-            return list;
+            return dependsOnbuild.GetDependedTypes();
         }
 
+
         public List<Assembly> ToAssemblyList()
         {
             return ResultType.Select(a => a.Assembly).ToList();
         }
-        public Assembly[] ToAssemblyArray()
+        public Assembly[] ToAssemblyArray(List<Type> types)
         {
-            return ResultType.Select(a => a.Assembly).ToArray();
+            return types.Select(a => a.Assembly).ToArray();
         }
     }
 }

Yi.Framework.Net6/src/framework/Yi.Framework.Core/Module/TopologicalSortNode.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.Core.Module
+{
+    public class TopologicalSortNode<T>
+    {
+        public T Data { get; private set; }
+        public List<TopologicalSortNode<T>> Dependents { get; private set; }
+        public int IncomingEdges { get; private set; }
+        public TopologicalSortNode(T data)
+        {
+            Data = data;
+            Dependents = new List<TopologicalSortNode<T>>();
+            IncomingEdges = 0;
+        }
+        public void AddDependent(TopologicalSortNode<T> dependent)
+        {
+            Dependents.Add(dependent);
+            dependent.IncomingEdges++;
+        }
+
+
+        public static List<TopologicalSortNode<T>> TopologicalSort(List<TopologicalSortNode<T>> graph)
+        {
+            List<TopologicalSortNode<T>> result = new List<TopologicalSortNode<T>>();
+            Queue<TopologicalSortNode<T>> queue = new Queue<TopologicalSortNode<T>>();
+            // 将所有入度为 0 的节点加入队列
+            foreach (TopologicalSortNode<T> node in graph)
+            {
+                if (node.IncomingEdges == 0)
+                {
+                    queue.Enqueue(node);
+                }
+            }
+            // 依次将入度为 0 的节点出队，并将它的依赖节点的入度减 1
+            while (queue.Count > 0)
+            {
+                TopologicalSortNode<T> node = queue.Dequeue();
+                result.Add(node);
+                foreach (TopologicalSortNode<T> dependent in node.Dependents)
+                {
+                    dependent.IncomingEdges--;
+                    if (dependent.IncomingEdges == 0)
+                    {
+                        queue.Enqueue(dependent);
+                    }
+                }
+            }
+            // 如果存在入度不为 0 的节点，则说明图中存在环
+            foreach (TopologicalSortNode<T> node in graph)
+            {
+                if (node.IncomingEdges != 0)
+                {
+                    throw new ArgumentException("模块之间存在互相依赖！");
+                }
+            }
+            return result;
+        }
+
+
+    }
+}

Yi.Framework.Net6/src/module/Yi.Framework.FileManager/FileService.cs

@@ -17,7 +17,7 @@ using Yi.Framework.Core.Helper;
 using Yi.Framework.Ddd.Repositories;
 using Yi.Framework.Ddd.Services;
 using Yi.Framework.Ddd.Services.Abstract;
-using Yi.Framework.ThumbnailSharp;
+using Yi.Framework.ImageSharp;
 
 namespace Yi.Framework.FileManager
 {
@@ -27,13 +27,13 @@ namespace Yi.Framework.FileManager
     public class FileService : ApplicationService, IFileService, IAutoApiService
     {
         private readonly IRepository<FileEntity> _repository;
-        private readonly ThumbnailSharpManager _thumbnailSharpManager;
+        private readonly ImageSharpManager _imageSharpManager;
         private readonly HttpContext _httpContext;
-        public FileService(IRepository<FileEntity> repository, ThumbnailSharpManager thumbnailSharpManager, IHttpContextAccessor httpContextAccessor
+        public FileService(IRepository<FileEntity> repository, ImageSharpManager imageSharpManager, IHttpContextAccessor httpContextAccessor
            )
         {
             _repository = repository;
-            _thumbnailSharpManager = thumbnailSharpManager;
+            _imageSharpManager = imageSharpManager;
             if (httpContextAccessor.HttpContext is null)
             {
                 throw new ApplicationException("HttpContext为空");
@@ -125,21 +125,16 @@ namespace Yi.Framework.FileManager
                         {
                             Directory.CreateDirectory(thumbnailPath);
                         }
-                        //保存至缩略图路径
-                        byte[] result = null!;
+                        string thumbnailFilePath = Path.Combine(thumbnailPath, filename);
                         try
                         {
-                            result = _thumbnailSharpManager.CreateThumbnailBytes(thumbnailSize: 300, imageStream: stream, imageFormat: Format.Jpeg);
-                            if(result is null) throw new ArgumentNullException(nameof(result));
+                            _imageSharpManager.ImageCompress(f.FileName, f.OpenReadStream(), thumbnailFilePath);
                         }
                         catch
                         {
-                            result = new byte[stream.Length];
-                            stream.Read(result, 0, result.Length);
-                        }
-                        finally
-                        {
-                            await System.IO.File.WriteAllBytesAsync(Path.Combine(thumbnailPath, filename), result);
+                            var result = new byte[stream.Length];
+                            await stream.ReadAsync(result, 0, result.Length);
+                            await File.WriteAllBytesAsync(thumbnailFilePath, result);
                         }
                     }
 

Yi.Framework.Net6/src/module/Yi.Framework.FileManager/Yi.Framework.FileManager.csproj

@@ -12,7 +12,7 @@
     <ProjectReference Include="..\..\framework\Yi.Framework.Core\Yi.Framework.Core.csproj" />
     <ProjectReference Include="..\..\framework\Yi.Framework.Data\Yi.Framework.Data.csproj" />
     <ProjectReference Include="..\..\framework\Yi.Framework.Ddd\Yi.Framework.Ddd.csproj" />
-    <ProjectReference Include="..\Yi.Framework.ThumbnailSharp\Yi.Framework.ThumbnailSharp.csproj" />
+    <ProjectReference Include="..\Yi.Framework.ImageSharp\Yi.Framework.ImageSharp.csproj" />
   </ItemGroup>
 
 </Project>

Yi.Framework.Net6/src/module/Yi.Framework.FileManager/YiFrameworkFileManagerModule.cs

@@ -4,11 +4,13 @@ using StartupModules;
 using Yi.Framework.Core.Attributes;
 using Yi.Framework.Core;
 using Yi.Framework.Ddd;
+using Yi.Framework.ImageSharp;
 
 namespace Yi.Framework.FileManager
 {
     [DependsOn(
-          typeof(YiFrameworkDddModule)
+          typeof(YiFrameworkDddModule),
+        typeof(YiFrameworkImageSharpModule)
         )]
     public class YiFrameworkFileManagerModule : IStartupModule
     {

Yi.Framework.Net6/src/module/Yi.Framework.ImageSharp/ImageSharpManager.cs

@@ -0,0 +1,64 @@
+using SixLabors.ImageSharp.Formats.Jpeg;
+using SixLabors.ImageSharp.Formats.Png;
+using SixLabors.ImageSharp.Processing;
+
+namespace Yi.Framework.ImageSharp;
+public class ImageSharpManager
+{
+    public void ImageCompress(string fileName, Stream stream, string savePath)
+    {
+        var extensionName = Path.GetExtension(fileName).ToLower();
+        if (extensionName == ".png")
+        {
+            PngImageCompress(stream, savePath);
+        }
+        else if (extensionName == ".jpg" || extensionName == ".jpeg")
+        {
+            JpgImageCompress(stream, savePath);
+        }
+        else
+        {
+            using (var fileStream = new FileStream(savePath, FileMode.Create, FileAccess.Write))
+            {
+                stream.CopyTo(fileStream);
+            }
+        }
+
+    }
+
+    public void PngImageCompress(Stream stream, string savePath)
+    {
+        using (var image = Image.Load(stream))
+        {
+            var encoder = new PngEncoder()
+            {
+                CompressionLevel = PngCompressionLevel.Level6,
+                
+            };
+            if (image.Width > 300)
+            {
+                image.Mutate(a => a.Resize(image.Width/2, image.Height/2));
+            }
+         
+            image.Save(savePath, encoder);
+        }
+    }
+    public void JpgImageCompress(Stream stream, string savePath)
+    {
+        using (var image = Image.Load(stream))
+        {
+            var encoder = new JpegEncoder()
+            {
+                Quality = 30
+            };
+            if (image.Width > 300)
+            {
+                image.Mutate(a => a.Resize(image.Width / 2, image.Height / 2));
+            }
+
+      
+            image.Save(savePath, encoder);
+        }
+    }
+
+}

Yi.Framework.Net6/src/module/Yi.Framework.ImageSharp/Yi.Framework.ImageSharp.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.Drawing.Common" Version="6.0.0" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="3.0.1" />
   </ItemGroup>
 
   <ItemGroup>

Yi.Framework.Net6/src/module/Yi.Framework.ImageSharp/YiFrameworkImageSharpModule.cs

@@ -7,9 +7,9 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Yi.Framework.ThumbnailSharp
+namespace Yi.Framework.ImageSharp
 {
-    public class YiFrameworkThumbnailSharpModule : IStartupModule
+    public class YiFrameworkImageSharpModule : IStartupModule
     {
         public void Configure(IApplicationBuilder app, ConfigureMiddlewareContext context)
         {
@@ -17,7 +17,7 @@ namespace Yi.Framework.ThumbnailSharp
 
         public void ConfigureServices(IServiceCollection services, ConfigureServicesContext context)
         {
-            services.AddSingleton<ThumbnailSharpManager>();
+            services.AddSingleton<ImageSharpManager>();
         }
     }
 }

Yi.Framework.Net6/src/module/Yi.Framework.ThumbnailSharp/ThumbnailSharpManager.cs

@@ -1,410 +0,0 @@
-/*MIT License
-
-Copyright(c) 2017 Mirza Ghulam Rasyid
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
-*/
-
-using System;
-using System.Drawing;
-using System.Drawing.Drawing2D;
-using System.Drawing.Imaging;
-using System.IO;
-using System.Net.Http;
-using System.Threading.Tasks;
-
-namespace Yi.Framework.ThumbnailSharp
-{
-    /// <summary>
-    /// Image format to use when creating a thumbnail.
-    /// </summary>
-    public enum Format
-    {
-        Jpeg,
-        Bmp,
-        Png,
-        Gif,
-        Tiff
-
-    }
-    /// <summary>
-    /// Thumbnail class that holds various methods to create an image thumbnail.
-    /// </summary>
-    public class ThumbnailSharpManager
-    {
-        private Bitmap CreateBitmapThumbnail(uint thumbnailSize, string imageFileLocation)
-        {
-            Bitmap bitmap = null;
-            Image image = null;
-            float actualHeight = default(float);
-            float actualWidth = default(float);
-            uint thumbnailHeight = default(uint);
-            uint thumbnailWidth = default(uint);
-            try
-            {
-                image = Image.FromFile(imageFileLocation);
-            }
-            catch
-            {
-                if (image != null)
-                    image = null;
-            }
-            if (image != null)
-            {
-                actualHeight = image.Height;
-                actualWidth = image.Width;
-                if (actualHeight > actualWidth)
-                {
-                    if ((uint)actualHeight <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than actual height (portrait image)");
-                    thumbnailHeight = thumbnailSize;
-                    thumbnailWidth = (uint)((actualWidth / actualHeight) * thumbnailSize);
-                }
-                else if (actualWidth > actualHeight)
-                {
-
-                    if ((uint)actualWidth <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than actual width (landscape image)");
-                    thumbnailWidth = thumbnailSize;
-                    thumbnailHeight = (uint)((actualHeight / actualWidth) * thumbnailSize);
-                }
-                else
-                {
-                    if ((uint)actualWidth <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than image's size");
-                    thumbnailWidth = thumbnailSize;
-                    thumbnailHeight = thumbnailSize;
-                }
-                try
-                {
-
-                    bitmap = new Bitmap((int)thumbnailWidth, (int)thumbnailHeight);
-                    Graphics resizedImage = Graphics.FromImage(bitmap);
-                    resizedImage.InterpolationMode = InterpolationMode.HighQualityBicubic;
-                    resizedImage.CompositingQuality = CompositingQuality.HighQuality;
-                    resizedImage.SmoothingMode = SmoothingMode.HighQuality;
-                    resizedImage.DrawImage(image, 0, 0, thumbnailWidth, thumbnailHeight);
-                }
-                catch
-                {
-                    if (bitmap != null)
-                        bitmap = null;
-                }
-            }
-            return bitmap;
-        }
-        private Bitmap CreateBitmapThumbnail(uint thumbnailSize, Stream imageStream)
-        {
-            Bitmap bitmap = null;
-            Image image = null;
-            float actualHeight = default(float);
-            float actualWidth = default(float);
-            uint thumbnailHeight = default(uint);
-            uint thumbnailWidth = default(uint);
-            try
-            {
-                image = Image.FromStream(imageStream);
-            }
-            catch
-            {
-                if (image != null)
-                    image = null;
-            }
-            if (image != null)
-            {
-                actualHeight = image.Height;
-                actualWidth = image.Width;
-                if (actualHeight > actualWidth)
-                {
-                    if ((uint)actualHeight <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than actual height (portrait image)");
-                    thumbnailHeight = thumbnailSize;
-                    thumbnailWidth = (uint)((actualWidth / actualHeight) * thumbnailSize);
-                }
-                else if (actualWidth > actualHeight)
-                {
-
-                    if ((uint)actualWidth <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than actual width (landscape image)");
-                    thumbnailWidth = thumbnailSize;
-                    thumbnailHeight = (uint)((actualHeight / actualWidth) * thumbnailSize);
-                }
-                else
-                {
-                    if ((uint)actualWidth <= thumbnailSize)
-                        throw new Exception("Thumbnail size must be less than image's size");
-                    thumbnailWidth = thumbnailSize;
-                    thumbnailHeight = thumbnailSize;
-                }
-                try
-                {
-                    bitmap = new Bitmap((int)thumbnailWidth, (int)thumbnailHeight);
-                    Graphics resizedImage = Graphics.FromImage(bitmap);
-                    resizedImage.InterpolationMode = InterpolationMode.HighQualityBicubic;
-                    resizedImage.CompositingQuality = CompositingQuality.HighQuality;
-                    resizedImage.SmoothingMode = SmoothingMode.HighQuality;
-                    resizedImage.DrawImage(image, 0, 0, thumbnailWidth, thumbnailHeight);
-                }
-                catch
-                {
-                    if (bitmap != null)
-                        bitmap = null;
-                }
-            }
-            return bitmap;
-        }
-        private ImageFormat GetImageFormat(Format format)
-        {
-            switch (format)
-            {
-                case Format.Jpeg:
-                    return ImageFormat.Jpeg;
-                case Format.Bmp:
-                    return ImageFormat.Bmp;
-                case Format.Png:
-                    return ImageFormat.Png;
-                case Format.Gif:
-                    return ImageFormat.Gif;
-                default:
-                    return ImageFormat.Tiff;
-            }
-        }
-        private async Task<Stream> GetImageStreamFromUrl(Uri urlAddress)
-        {
-            Stream result = null;
-            try
-            {
-                byte[] bytes = await GetImageBytesFromUrl(urlAddress);
-                result = new MemoryStream(bytes);
-            }
-            catch
-            {
-                result = null;
-            }
-            return result;
-        }
-        private async Task<byte[]> GetImageBytesFromUrl(Uri urlAddress)
-        {
-            byte[] buffer = null;
-            try
-            {
-                using (HttpClient client = new HttpClient())
-                {
-                    buffer = await client.GetByteArrayAsync(urlAddress);
-                }
-            }
-            catch
-            {
-                buffer = null;
-            }
-            return buffer;
-        }
-
-        /// <summary>
-        /// Create a thumbnail from file and returns as stream.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageFileLocation">Correct image file location.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as stream. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageFileLocation' is null.</exception>
-        /// <exception cref="FileNotFoundException">'imageFileLocation' does not exist.</exception>
-        public Stream CreateThumbnailStream(uint thumbnailSize, string imageFileLocation, Format imageFormat)
-        {
-            if (String.IsNullOrEmpty(imageFileLocation))
-                throw new ArgumentNullException(nameof(imageFileLocation), "'imageFileLocation' cannot be null");
-            if (!File.Exists(imageFileLocation))
-                throw new FileNotFoundException($"'{imageFileLocation}' cannot be found");
-            Bitmap bitmap = CreateBitmapThumbnail(thumbnailSize, imageFileLocation);
-            if (bitmap != null)
-            {
-                MemoryStream stream = new MemoryStream();
-                bitmap.Save(stream, GetImageFormat(imageFormat));
-                stream.Position = 0;
-                return stream;
-            }
-            return null;
-        }
-        /// <summary>
-        /// Create a thumbnail from image stream and returns as stream.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageStream">Valid image stream object.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as stream. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageStream' is null.</exception>
-        public Stream CreateThumbnailStream(uint thumbnailSize, Stream imageStream, Format imageFormat)
-        {
-            if (imageStream == null)
-                throw new ArgumentNullException(nameof(imageStream), "'imageStream' cannot be null");
-            Bitmap bitmap = CreateBitmapThumbnail(thumbnailSize, imageStream);
-            if (bitmap != null)
-            {
-                MemoryStream stream = new MemoryStream();
-                bitmap.Save(stream, GetImageFormat(imageFormat));
-                stream.Position = 0;
-                return stream;
-            }
-            return null;
-        }
-        /// <summary>
-        /// Create a thumbnail from image in bytes and returns as stream.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageBytes">Valid image bytes array.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as stream. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageBytes' is null.</exception>
-        public Stream CreateThumbnailStream(uint thumbnailSize, byte[] imageBytes, Format imageFormat)
-        {
-            if (imageBytes == null)
-                throw new ArgumentNullException(nameof(imageBytes), "'imageStream' cannot be null");
-            Bitmap bitmap = CreateBitmapThumbnail(thumbnailSize, new MemoryStream(imageBytes));
-            if (bitmap != null)
-            {
-                MemoryStream stream = new MemoryStream();
-                bitmap.Save(stream, GetImageFormat(imageFormat));
-                stream.Position = 0;
-                return stream;
-            }
-            return null;
-        }
-        /// <summary>
-        /// Create a thumbnail from file and returns as bytes.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageFileLocation">Correct image file location.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as bytes. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageFileLocation' is null.</exception>
-        /// <exception cref="FileNotFoundException">'imageFileLocation' does not exist.</exception>
-        public byte[] CreateThumbnailBytes(uint thumbnailSize, string imageFileLocation, Format imageFormat)
-        {
-            if (String.IsNullOrEmpty(imageFileLocation))
-                throw new ArgumentNullException(nameof(imageFileLocation), "'imageFileLocation' cannot be null");
-            if (!File.Exists(imageFileLocation))
-                throw new FileNotFoundException($"'{imageFileLocation}' cannot be found");
-            Stream stream = CreateThumbnailStream(thumbnailSize, imageFileLocation, imageFormat);
-            if (stream != null)
-            {
-                byte[] streamBytes = new byte[stream.Length];
-                stream.Read(streamBytes, 0, streamBytes.Length);
-                return streamBytes;
-            }
-            return null;
-        }
-        /// <summary>
-        /// Create a thumbnail from image stream and returns as bytes.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageStream">Valid image stream object.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as bytes. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageStream' is null.</exception>
-        public byte[] CreateThumbnailBytes(uint thumbnailSize, Stream imageStream, Format imageFormat)
-        {
-            if (imageStream == null)
-                throw new ArgumentNullException(nameof(imageStream), "'imageStream' cannot be null");
-
-            Stream stream = CreateThumbnailStream(thumbnailSize, imageStream, imageFormat);
-            if (stream != null)
-            {
-                byte[] streamBytes = new byte[stream.Length];
-                stream.Read(streamBytes, 0, streamBytes.Length);
-                return streamBytes;
-            }
-            return null;
-        }
-        /// <summary>
-        /// Create a thumbnail from image in bytes and returns as bytes.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="imageBytes">Valid image bytes array.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as bytes. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'imageBytes' is null.</exception>
-        public byte[] CreateThumbnailBytes(uint thumbnailSize, byte[] imageBytes, Format imageFormat)
-        {
-            if (imageBytes == null)
-                throw new ArgumentNullException(nameof(imageBytes), "'imageStream' cannot be null");
-            Stream stream = CreateThumbnailStream(thumbnailSize, imageBytes, imageFormat);
-            if (stream != null)
-            {
-                byte[] streamBytes = new byte[stream.Length];
-                stream.Read(streamBytes, 0, streamBytes.Length);
-                return streamBytes;
-            }
-            return null;
-        }
-
-
-        /// <summary>
-        /// Create a thumbnail from valid image url asynchronously.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="urlAddress">Valid absolute url address with proper scheme.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as stream. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'urlAddress' is null.</exception>
-        public async Task<Stream> CreateThumbnailStreamAsync(uint thumbnailSize, Uri urlAddress, Format imageFormat)
-        {
-            if (urlAddress == null)
-                throw new ArgumentNullException(nameof(urlAddress), "'urlAddress' cannot be null");
-            Stream result = null;
-            Stream stream = await GetImageStreamFromUrl(urlAddress);
-            if (stream != null)
-            {
-                result = CreateThumbnailStream(thumbnailSize, stream, imageFormat);
-            }
-            return result;
-        }
-
-        /// <summary>
-        /// Create a thumbnail from valid image url asynchronously.
-        /// </summary>
-        /// <param name="thumbnailSize">Thumbnail size. For portrait image, thumbnail size must be less than its height. 
-        /// For landscape image, thumbnail size must be less than its width. For the same size image (Proportional), thumbnail size must be less than its width and height.</param>
-        /// <param name="urlAddress">Valid absolute url address with proper scheme.</param>
-        /// <param name="imageFormat">Image format to use.</param>
-        /// <returns>A thumbnail image as bytes. Returns null if it fails.</returns>
-        /// <exception cref="ArgumentNullException">'urlAddress' is null.</exception>
-        public async Task<byte[]> CreateThumbnailBytesAsync(uint thumbnailSize, Uri urlAddress, Format imageFormat)
-        {
-            if (urlAddress == null)
-                throw new ArgumentNullException(nameof(urlAddress), "'urlAddress' cannot be null");
-            byte[] result = null;
-            byte[] imageBytes = await GetImageBytesFromUrl(urlAddress);
-            if (imageBytes != null)
-            {
-                result = CreateThumbnailBytes(thumbnailSize, imageBytes, imageFormat);
-            }
-            return result;
-        }
-
-
-
-    }
-}