I referred to Microsoft Docs.Using ASP.NET Core SignalR with Blazor WebAssembly https://docs.microsoft.com/ja-jp/aspnet/core/tutorials/signalr-blazor-webassembly?view=aspnetcore-3.1&tabs=visual-studioMusic: Claude Achille Debussy (Deux Arabesques) wave fileBlog https://akasatanahama.com/Twitterhttps://twitter.com/fullNam35087976/Githubhttps://github.com/shaieaokamodkijiadjfoa/