如何关闭自动 Elmah 日志记录？

Question

我想在 Elmah 中禁用自动异常记录，同时启用手动记录，例如

ErrorSignal.FromCurrentContext.Raise(ex)

我的情况几乎与 this one 相同，唯一的区别是我使用的是 XML 日志而不是 SQL。我还为用于跟踪目的的异常生成了一个唯一 ID。

当我在 Web.config 中禁用 ErrorLog 模块时，但是，正如 the answer 中所建议的那样，我也失去了手动记录异常的能力。那时没有任何记录。

这是来自 Global.asax 的代码：

Sub Application_Error(Sender As Object, e As EventArgs)
  Dim sCode As String

  sCode = Utils.NewId(IdModes.AlphaNumeric)

  Try
    Throw New LinkedException(sCode, Me.Server.GetLastError)

  Catch ex As LinkedException
    ErrorSignal.FromCurrentContext.Raise(ex)

  Finally
    Me.Server.ClearError()

  End Try

  Me.Context.Redirect($"~/oops/{sCode}")
End Sub

...这里是 LinkedException:

Imports System.Web

Public Class LinkedException
  Inherits HttpException

  Public Sub New(ExceptionCode As String, ex As HttpException)
    MyBase.New(ex.ErrorCode, $"[{ExceptionCode}] {ex.Message}", ex)
  End Sub
End Class

是否可以关闭自动记录但保持手动打开？当我打开自动时，我得到两个条目，当我关闭它时，我得到 none.

Answer 1

事实证明，最好让 ELMAH 来完成繁重的工作，根本不使用 Application_Error。

Imports Elmah

Public Class Global_asax
  Inherits HttpApplication

  Private Sub ErrorLog_Filtering(Sender As Object, e As ExceptionFilterEventArgs)
    Dim oContext As HttpContext
    Dim oError As [Error]
    Dim sCode As String

    oContext = TryCast(e.Context, HttpContext)
    sCode = Utils.NewId(IdModes.AlphaNumeric)

    If oContext.IsNotNothing Then
      ' Create a customized error containing the error code
      oError = New [Error](e.Exception, oContext) With {.User = $"[{sCode}] { .User}"}

      ' Log the customized error
      ErrorLog.GetDefault(oContext).Log(oError)

      ' Dismiss the incoming exception so
      ' we don't get a duplicate entry
      e.Dismiss()
    End If

    Me.Response.Redirect($"~/oops/{sCode}", True)
  End Sub
End Class

如何关闭自动 Elmah 日志记录？

How to turn off automatic Elmah logging?

.net

logging

error-handling

webforms

elmah