pef(Upload): add bufferSize parameter for improve save file performance (#6314)

* refactor: 精简代码

* feat: 增加 BufferSize 参数

* doc: 更新示例文档

* chore: bump version 9.8.0-beta06

Author: ArgoZhang

src/BootstrapBlazor.Server/Components/Samples/UploadButtons.razor.cs

@@ -61,7 +61,7 @@ private async Task SaveToFile(UploadFile file)
             _token ??= new CancellationTokenSource();
             try
             {
-                var ret = await file.SaveToFileAsync(fileName, MaxFileLength, _token.Token);
+                var ret = await file.SaveToFileAsync(fileName, MaxFileLength, token: _token.Token);
 
                 if (ret)
                 {

src/BootstrapBlazor.Server/Components/Samples/UploadCards.razor.cs

@@ -78,7 +78,7 @@ private async Task SaveToFile(UploadFile file)
             _token ??= new CancellationTokenSource();
             try
             {
-                var ret = await file.SaveToFileAsync(fileName, MaxFileLength, _token.Token);
+                var ret = await file.SaveToFileAsync(fileName, MaxFileLength, token: _token.Token);
 
                 if (ret)
                 {

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.8.0-beta05</Version>
+    <Version>9.8.0-beta06</Version>
   </PropertyGroup>
 
   <ItemGroup>

src/BootstrapBlazor/Extensions/UploadFileExtensions.cs

@@ -57,10 +57,11 @@ public static async Task RequestBase64ImageFileAsync(this UploadFile upload, str
     /// <param name="upload"></param>
     /// <param name="fileName"></param>
     /// <param name="maxAllowedSize"></param>
+    /// <param name="bufferSize"></param>
     /// <param name="token"></param>
     /// <returns></returns>
     [ExcludeFromCodeCoverage]
-    public static async Task<bool> SaveToFileAsync(this UploadFile upload, string fileName, long maxAllowedSize = 512000, CancellationToken token = default)
+    public static async Task<bool> SaveToFileAsync(this UploadFile upload, string fileName, long maxAllowedSize = 512000, int bufferSize = 64 * 1024, CancellationToken token = default)
     {
         var ret = false;
         if (upload.File != null)
@@ -92,15 +93,15 @@ public static async Task<bool> SaveToFileAsync(this UploadFile upload, string fi
                 {
                     // 打开文件流
                     var stream = upload.File.OpenReadStream(maxAllowedSize, token);
-                    var buffer = new byte[4 * 1096];
+                    var buffer = new byte[bufferSize];
                     int bytesRead = 0;
                     double totalRead = 0;
 
                     // 开始读取文件
                     while ((bytesRead = await stream.ReadAsync(buffer, token)) > 0)
                     {
                         totalRead += bytesRead;
-                        await uploadFile.WriteAsync(buffer.AsMemory(0, bytesRead), token);
+                        await uploadFile.WriteAsync(buffer, 0, bytesRead, token);
 
                         if (upload.UpdateCallback != null)
                         {