使用blazor服务器自动刷新

protected override async Task OnInitializedAsync()
{
    hubConnection = new HubConnectionBuilder()
        .WithUrl(NavigationManager.ToAbsoluteUri("/chathub"))
        .Build();

    hubConnection.On<string>("ReceiveMessage", (user, message) =>
    {
        // 更新UI
    });

    await hubConnection.StartAsync();
}

public class ChatHub : Hub
{
    public async Task SendMessage(string user, string message)
    {
        await Clients.All.SendAsync("ReceiveMessage", user, message);
    }
}

protected override async Task OnAfterRenderAsync(bool firstRender)
{
    if (firstRender)
    {
        await hubConnection.StartAsync();
    }
}

public class DataHub : Hub
{
    public async Task UpdateData(string newData)
    {
        await Clients.All.SendAsync("DataUpdated", newData);
    }
}

@page "/data"
@inject NavigationManager Navigation

<h3>Data Page</h3>
<p>@data</p>

@code {
    private string data;
    private HubConnection hubConnection;

    protected override async Task OnInitializedAsync()
    {
        hubConnection = new HubConnectionBuilder()
            .WithUrl(Navigation.ToAbsoluteUri("/datahub"))
            .Build();

        hubConnection.On<string>("DataUpdated", (newData) =>
        {
            data = newData;
            StateHasChanged();
        });

        await hubConnection.StartAsync();
    }

    public bool IsConnected => hubConnection.State == HubConnectionState.Connected;

    public async ValueTask DisposeAsync()
    {
        if (hubConnection != null)
        {
            await hubConnection.DisposeAsync();
        }
    }
}