Question

如何在应用程序洞察中将自定义属性添加到默认请求遥测？我能够通过创建新的遥测客户端来做到这一点，但我不想这样做，因为它会创建重复的事件。

Answer 1

制作您自己的自定义遥测初始化器。 https://azure.microsoft.com/en-us/documentation/articles/app-insights-api-custom-events-metrics/#telemetry-initializers

从上面的文章中摘过：

using System;
using Microsoft.ApplicationInsights.Channel;
using Microsoft.ApplicationInsights.DataContracts;
using Microsoft.ApplicationInsights.Extensibility;

namespace MvcWebRole.Telemetry
{
  /*
   * Custom TelemetryInitializer that overrides the default SDK 
   * behavior of treating response codes >= 400 as failed requests
   * 
   */
  public class MyTelemetryInitializer : ITelemetryInitializer
  {
    public void Initialize(ITelemetry telemetry)
    {
        var requestTelemetry = telemetry as RequestTelemetry;
        // Is this a TrackRequest() ?
        if (requestTelemetry == null) return;
        int code;
        bool parsed = Int32.TryParse(requestTelemetry.ResponseCode, out code);
        if (!parsed) return;
        if (code >= 400 && code < 500)
        {
            // If we set the Success property, the SDK won't change it:
            requestTelemetry.Success = true;
            // Allow us to filter these requests in the portal:
            requestTelemetry.Context.Properties["Overridden400s"] = "true";
        }
        // else leave the SDK to set the Success property      
    }
  }
}

然后在配置文件中或通过代码加载初始化程序，请参阅上面的文档了解这些细节。

将自定义属性添加到默认请求遥测

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