如何忽略全局Asax中图像的日志记录错误

问题描述

我的global.asax中有一个错误处理程序，如下所示；

I have an error handler in my global.asax as follows;

  Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
        ' Code that runs when an unhandled error occurs
        Dim ex = Server.GetLastError.GetBaseException
        Dim lastErrorWrapper As HttpException = Server.GetLastError()
        Dim lastError As Exception = lastErrorWrapper

        If lastErrorWrapper.InnerException IsNot Nothing Then
            lastError = lastErrorWrapper.InnerException
        End If

        My.ErrorHandler.LogError( _
            "<BR/><BR/>URL: " & Request.RawUrl & _
            "<BR/><BR/>STACK: " & ex.StackTrace & _
            "<BR/><BR/>SOURCE: " & ex.Source & _
            "<BR/><BR/>MESSAGE: " & ex.Message & _
            "<BR/><BR/>TYPENAME: " & ex.GetType.ToString & _
            "<BR/><BR/>INNER EXCEPTION: " & lastError.ToString & _
            "<BR/><BR/>REFERRER: " & HttpContext.Current.Request.Url.AbsoluteUri & _
            "<BR/><BR/>USER IP: " & Request.ServerVariables("REMOTE_ADDR") & " -- " & Request.ServerVariables("HTTP_USER_AGENT"))
    End Sub

很显然，这很有效，只要有错误，它就会向我发送电子邮件.但是，对于在文件系统中找不到的任何映像也是如此.它给我一个文件不存在".错误.有没有办法忽略不在磁盘上的映像的日志记录错误?

Obviously, this works great and sends me an email whenever there is an error. But, this is also true for any images that are not found in the file system. It gives me a "File does not exist." error. Is there a way to ignore logging errors for images that are not located on disk?

推荐答案

您可以解决FileNotFoundException吗?如果不应发生异常，则应解决问题而不是抑制问题.要处理已知的异常，可以使用以下代码.

Cant you resolve the FileNotFoundException instead? If the exception should not occur then rather resolve the issue than suppressing it. To handle a known exception you can use the following code.

if(Server.GetLastError().GetBaseException() is System.Web.HttpException)
{
     //You could check whether the
     //Server.GetLastError().GetBaseException().Message contains the appropriate message
     Debug.WriteLine("Suppressed FileNotFoundException");
}else
//Log an unhandled exception

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