1. 首先在Startup.cs文件中注册Hangfire服务：

services.AddHangfire(config => config.UseSqlServerStorage(Configuration.GetConnectionString("DefaultConnection")));

2. 然后在Configure方法中启用Hangfire服务和Dashboard：

app.UseHangfireDashboard();
app.UseHangfireServer();

3. 在要使用Hangfire的组件中注入相关服务，例如：

public class MyComponent
{
    private readonly IBackgroundJobClient _jobClient;
    public MyComponent(IBackgroundJobClient jobClient)
    {
        _jobClient = jobClient;
    }

    public async Task SomeMethod()
    {
        await _jobClient.Enqueue(() => DoSomething());
    }

    public void DoSomething()
    {
        //Perform some work here
    }
}

4. 在Blazor Server的组件中使用Inject属性注入Hangfire服务：

@inject IBackgroundJobClient HangfireClient

5. 在需要的地方调用Hangfire服务来触发定时作业或后台作业：

HangfireClient.Enqueue(() => DoSomething());