doc(DataProtection): add PersistKeysToFileSystem call (#7801)

Author: ArgoZhang

src/BootstrapBlazor.Server/Extensions/ServiceCollectionSharedExtensions.cs

@@ -4,6 +4,7 @@
 // Maintainer: Argo Zhang(argo@live.ca) Website: https://www.blazor.zone
 
 using Microsoft.AspNetCore.Components.Authorization;
+using Microsoft.AspNetCore.DataProtection;
 
 namespace Microsoft.Extensions.DependencyInjection;
 
@@ -98,7 +99,9 @@ public static IServiceCollection AddBootstrapBlazorServices(this IServiceCollect
         services.AddBootstrapBlazorRegionService();
 
         // 增加密钥存储配置
-        services.AddDataProtection();
+        services.AddDataProtection()
+            .SetApplicationName("BootstrapBlazor")
+            .PersistKeysToFileSystem(new DirectoryInfo(Path.Combine(AppContext.BaseDirectory, "keys")));
 
         // 增加 PetaPoco ORM 数据服务操作类
         // 需要时打开下面代码