授予Windows服务权限以写入事件日志

Question

我尝试从此documentation执行以下操作，以便在启动/停止服务时添加到事件日志中。当我在本地计算机上安装服务并尝试启动它时，构造函数中的代码由于权限而出错：

public MyService()
{
    InitializeComponent();

    eventLog1 = new System.Diagnostics.EventLog();
    if (!System.Diagnostics.EventLog.SourceExists("MySource")) 
    {         
            System.Diagnostics.EventLog.CreateEventSource(
                "MySource","MyNewLog");
    }
    eventLog1.Source = "MySource";
    eventLog1.Log = "MyNewLog";
}

protected override void OnStart(string[] args)
{
    eventLog1.WriteEntry("In OnStart");
}

protected override void OnStop()
{
    eventLog1.WriteEntry("In onStop.");
}

以下是事件查看器中显示的错误：

Application: MyService.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.Security.SecurityException
Stack:
   at System.Diagnostics.EventLog.FindSourceRegistration(System.String, System.String, Boolean, Boolean)
   at System.Diagnostics.EventLog.SourceExists(System.String, System.String, Boolean)
   at System.Diagnostics.EventLog.SourceExists(System.String)
   at PharmaLytics.Reforecaster.ReforecasterService..ctor()
   at PharmaLytics.Reforecaster.Program.Main()