diff --git a/.github/workflows/auto-pull-request-checks.yml b/.github/workflows/auto-pull-request-checks.yml
index 642d30b36e6..a1d9b6196f0 100644
--- a/.github/workflows/auto-pull-request-checks.yml
+++ b/.github/workflows/auto-pull-request-checks.yml
@@ -25,6 +25,7 @@ jobs:
           dotnet test test/UnitTest --collect:"XPlat Code Coverage"
 
       - name: Upload to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          flags: BB
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index df0b71c01ff..976b4eba015 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -32,7 +32,7 @@ jobs:
         dotnet test test/UnitTest --collect:"XPlat Code Coverage"
 
     - name: Upload to Codecov
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
 
diff --git a/src/BootstrapBlazor/Components/Upload/UploadPreviewList.razor.cs b/src/BootstrapBlazor/Components/Upload/UploadPreviewList.razor.cs
index 05806121dce..9dc247b2651 100644
--- a/src/BootstrapBlazor/Components/Upload/UploadPreviewList.razor.cs
+++ b/src/BootstrapBlazor/Components/Upload/UploadPreviewList.razor.cs
@@ -252,17 +252,17 @@ private async Task OnClickCancel(UploadFile item)
     private string? GetFileFormatClassString(UploadFile item)
     {
         var builder = CssBuilder.Default("file-icon");
-        var fileExtension = Path.GetExtension(item.OriginFileName ?? item.FileName);
+        var fileExtension = Path.GetExtension(item.GetFileName());
         if (!string.IsNullOrEmpty(fileExtension))
         {
             fileExtension = fileExtension.ToLowerInvariant();
+            var icon = OnGetFileFormat?.Invoke(fileExtension) ?? GetFileExtensions(fileExtension);
+            builder.AddClass(icon);
         }
-        var icon = OnGetFileFormat?.Invoke(fileExtension) ?? GetFileExtensions(fileExtension);
-        builder.AddClass(icon);
         return builder.Build();
     }
 
-    private string? GetFileExtensions(string? fileExtension) => fileExtension switch
+    private string? GetFileExtensions(string fileExtension) => fileExtension switch
     {
         ".csv" or ".xls" or ".xlsx" => FileIconExcel,
         ".doc" or ".docx" or ".dot" or ".dotx" => FileIconDocx,
diff --git a/test/UnitTest/Components/UploadButtonTest.cs b/test/UnitTest/Components/UploadButtonTest.cs
index 73394a539d8..f5d15d31332 100644
--- a/test/UnitTest/Components/UploadButtonTest.cs
+++ b/test/UnitTest/Components/UploadButtonTest.cs
@@ -362,6 +362,7 @@ public void ButtonUpload_OnGetFileFormat_Ok()
                 new() { FileName = "1.doc" },
                 new() { FileName = "1.docx" },
                 new() { FileName = "1.dot" },
+                new() { FileName = "1.dotx" },
                 new() { FileName = "1.ppt" },
                 new() { FileName = "1.pptx" },
                 new() { FileName = "1.wav" },
@@ -397,7 +398,6 @@ public void ButtonUpload_OnGetFileFormat_Ok()
         cut.Contains("fa-file-archive");
         cut.Contains("fa-file-text");
         cut.Contains("fa-file-image");
-        cut.Contains("fa-file-archive");
         cut.Contains("fa-file");
 
         cut.SetParametersAndRender(pb =>