feat(PdfReader): add OnDownloadAsync function (#7189)

* feat(PdfReader): add OnDownloadAsync function

* chore: updated version to 10.0.1-beta06

Author: ArgoZhang

src/BootstrapBlazor.Server/BootstrapBlazor.Server.csproj

@@ -62,7 +62,7 @@
     <PackageReference Include="BootstrapBlazor.OfficeViewer" Version="10.0.0" />
     <PackageReference Include="BootstrapBlazor.OnScreenKeyboard" Version="10.0.0" />
     <PackageReference Include="BootstrapBlazor.OpcDa" Version="10.0.0" />
-    <PackageReference Include="BootstrapBlazor.PdfReader" Version="10.0.1-beta05" />
+    <PackageReference Include="BootstrapBlazor.PdfReader" Version="10.0.1-beta06" />
     <PackageReference Include="BootstrapBlazor.PdfViewer" Version="10.0.0" />
     <PackageReference Include="BootstrapBlazor.Player" Version="10.0.1" />
     <PackageReference Include="BootstrapBlazor.RDKit" Version="10.0.0" />

src/BootstrapBlazor.Server/Components/Samples/PdfReaders.razor

@@ -10,10 +10,10 @@
     <section ignore class="row form-inline g3">
         <div class="col-12 col-sm-6">
             <BootstrapInputGroup>
-                <BootstrapInputGroupLabel>ShowTwoPagesOnView</BootstrapInputGroupLabel>
-                <Switch @bind-Value="_options.ShowTwoPagesOnViewButton"></Switch>
+                <BootstrapInputGroupLabel>ShowTwoPagesOneView</BootstrapInputGroupLabel>
+                <Switch @bind-Value="_showTwoPagesOneViewButton"></Switch>
             </BootstrapInputGroup>
         </div>
     </section>
-    <PdfReader Options="_options"></PdfReader>
+    <PdfReader Url="@_url" ShowTwoPagesOneViewButton="_showTwoPagesOneViewButton" ViewHeight="600px" OnDownloadAsync="OnDownloadAsync"></PdfReader>
 </DemoBlock>

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

@@ -12,6 +12,12 @@ namespace BootstrapBlazor.Server.Components.Samples;
 /// </summary>
 public partial class PdfReaders
 {
+    [Inject, NotNull]
+    private IWebHostEnvironment? WebHostEnvironment { get; set; }
+
+    [Inject, NotNull]
+    private DownloadService? DownloadService { get; set; }
+
     [DisplayName("the file in the wwwroot relative path or url")]
     private string FileName { get; set; } = "/samples/sample.pdf";
 
@@ -21,11 +27,14 @@ public partial class PdfReaders
     [NotNull]
     PdfReader? PdfReader { get; set; }
 
-    private PdfReaderOptions _options = new()
+    private bool _showTwoPagesOneViewButton = true;
+    private string _url = "./samples/sample.pdf";
+
+    private async Task OnDownloadAsync()
     {
-        Url = "./samples/sample.pdf",
-        ViewHeight = "600px"
-    };
+        var file = Path.Combine(WebHostEnvironment.WebRootPath, "samples", "sample.pdf");
+        await DownloadService.DownloadFromFileAsync($"sample_{DateTime.Now:yyyyMMddHHmmss}.pdf", file);
+    }
 
     private string FilenameStream { get; set; } = "https://blazor.app1.es/_content/DemoShared/samples/sample2.pdf";