c# – 抛出错误但不向用户显示错误的最简洁方法(没有自定义错误页面)

我正在运行一些只需要运行一次的代码,但它依赖于外部资源而且可能会失败.我希望错误出现在事件日志中,但我不希望用户看到它.我想尽可能避免使用自定义错误页面.

我可以捕获异常并将其自己写入事件日志,但我担心我不能保证asp.net事件源的名称会是什么(它似乎会根据框架版本而改变.)我也是无法创建我自己的事件源,因为它需要管理权限.

我目前正在努力的方法是一个黑客(它还没有工作),它看起来像这样：

    public void Init(HttpApplication context)
    {
        try
        {
            throw new Exception("test"); // This is where the code that errors would go
        }
        catch (Exception ex)
        {
            HttpContext.Current.Application.Add("CompilationFailed", ex);
        }
    }

    private void context_BeginRequest(object sender, EventArgs e)
    {
        if (HttpContext.Current.Application.AllKeys.Contains("CompilationFailed"))
        {
            // It failed on Init - we can't throw an exception there so lets try it here

            var origEx = (Exception)HttpContext.Current.Application["CompilationFailed"];
            // Only ever do this once
            HttpContext.Current.Application.Remove("CompilationFailed");

            // This should just look like a normal page load to the user 
            // - it will be the first request to the site so we won't be 
            //  interrupting any postbacks or anything


            HttpContext.Current.Response.AddHeader("Location", "/");
            HttpContext.Current.Response.StatusCode = 301;
            try
            {
                HttpContext.Current.Response.End();
            }
            catch (ThreadAbortException ex)
            {
                throw origEx; 
            }
        }
    }

理想情况下,我真正想要的是IIS中的RecordException()方法,如果存在这样的话.

解决方法:

我建议使用Elmah for ASP.NET.

标签：c,asp-net,event-log
来源： https://codeday.me/bug/20190517/1121891.html