feat(ButtonUpload): add FileCount parameter

src/BootstrapBlazor/Components/Upload/ButtonUploadBase.cs

@@ -180,6 +180,7 @@ protected override async Task OnFileChange(InputFileChangeEventArgs args)
                 OriginFileName = f.Name,
                 Size = f.Size,
                 File = f,
+                FileCount = args.FileCount,
                 Uploaded = OnChange == null,
                 UpdateCallback = Update
             }).ToList();

src/BootstrapBlazor/Components/Upload/UploadBase.cs

@@ -21,7 +21,7 @@ public abstract class UploadBase<TValue> : ValidateBase<TValue>, IUpload
         .Build();
 
     /// <summary>
-    /// 
+    /// 获得/设置 当前上传文件
     /// </summary>
     protected UploadFile? CurrentFile { get; set; }
 

src/BootstrapBlazor/Components/Upload/UploadFile.cs

@@ -47,6 +47,11 @@ public class UploadFile
     /// </summary>
     public IBrowserFile? File { get; set; }
 
+    /// <summary>
+    /// 获得/设置 上传文件数量
+    /// </summary>
+    public int FileCount { get; init; } = 1;
+
     /// <summary>
     /// 获得/设置 更新进度回调委托
     /// </summary>

test/UnitTest/Components/UploadTest.cs

@@ -606,13 +606,15 @@ await cut.InvokeAsync(async () =>
     [Fact]
     public async Task ButtonUpload_IsDirectory_Ok()
     {
+        var fileCount = 0;
         var fileNames = new List<string>();
         List<UploadFile> fileList = [];
         var cut = Context.RenderComponent<ButtonUpload<string>>(pb =>
         {
             pb.Add(a => a.IsDirectory, true);
             pb.Add(a => a.OnChange, file =>
             {
+                fileCount = file.FileCount;
                 fileNames.Add(file.OriginFileName!);
                 return Task.CompletedTask;
             });
@@ -628,6 +630,7 @@ await cut.InvokeAsync(() => input.Instance.OnChange.InvokeAsync(new InputFileCha
             new(),
             new("UploadTestFile2")
         })));
+        Assert.Equal(2, fileCount);
         Assert.Equal(2, fileNames.Count);
         Assert.Equal(2, fileList.Count);
     }