如何在ASP.NET核心应用启动时访问TelemetryClient单例实例

Install-Package Microsoft.ApplicationInsights.AspNetCore

using Microsoft.ApplicationInsights;
using Microsoft.ApplicationInsights.Extensibility;

public void ConfigureServices(IServiceCollection services)
{
    // 添加TelemetryClient单例实例
    services.AddSingleton<TelemetryClient>(provider =>
    {
        TelemetryConfiguration configuration = TelemetryConfiguration.CreateDefault();
        configuration.InstrumentationKey = "Your_Instrumentation_Key"; // 替换为你的Application Insights仪表板的仪表板密钥
        TelemetryClient telemetryClient = new TelemetryClient(configuration);
        return telemetryClient;
    });

    // 其他服务配置...
}

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Microsoft.ApplicationInsights;

public class HomeController : Controller
{
    private readonly ILogger<HomeController> _logger;
    private readonly TelemetryClient _telemetryClient;

    public HomeController(ILogger<HomeController> logger, TelemetryClient telemetryClient)
    {
        _logger = logger;
        _telemetryClient = telemetryClient;
    }

    public IActionResult Index()
    {
        // 使用TelemetryClient进行日志记录、跟踪等操作
        _logger.LogInformation("Index page visited");
        _telemetryClient.TrackEvent("HomePageVisited");

        return View();
    }

    // 其他操作方法...
}