ELMAH(Error Logging Modules and Handlers for ASP.NET )是一款ASP.NET下的系统错误记录管理工具，它可以非常方便的把“黄屏”错误记录到XML，MS SQLServer，SQLite，MySql等文件中，甚至它还可以发送邮件。
这里我就记一下使用它的方法。本文以记录到MS SQL Server 2005为例：
1. 下载ELMAH
ELMAH官方地址：http://code.google.com/p/elmah/
版本：ELMAH-1.0-BETA2-bin.zip
2.把dll文件复制到项目的bin目录下。
DLL文件：Elmah.dll
版本：1.0.9414.1441
大小：114688 bytes ( 112.000 KB, 0.109 MB )
3.设置Web.config
<xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<sectionGroup name="elmah">
<section name="security" type="Elmah.SecuritySectionHandler, Elmah"/>
<section name="errorLog" type="Elmah.ErrorLogSectionHandler, Elmah"/>
<section name="errorMail" type="Elmah.ErrorMailSectionHandler, Elmah"/>
<section name="errorFilter" type="Elmah.ErrorFilterSectionHandler, Elmah"/>
</sectionGroup>
</configSections>
<elmah>
<security allowRemoteAccess="0" />
<errorLog type="Elmah.SqlErrorLog, Elmah"
connectionStringName="ConnectionString" />
</elmah>
<location path="elmah.axd">
<system.web>
<authorization>
<deny users="?"/>
<allow users="Admin"/>
</authorization>
</system.web>
</location>
<appSettings />
<connectionStrings>
<add name="ConnectionString" connectionString="Data Source=qq\SQLEXPRESS;Initial Catalog=xx;User ID=xx;Password=xx" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>
<httpHandlers>
<add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah"/>
</httpHandlers>
<httpModules>
<add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
</httpModules>
<compilation debug="true" />
<authentication mode="Forms">
<forms loginUrl="login.aspx" name=".ASPXAUTH">
</forms>
</authentication>
<authorization>
<deny users="*"/>
</authorization>
</system.web>
</configuration>
4.向数据添加表
/* 错误管理工具 SQL代码 */
CREATE TABLE dbo.ELMAH_Error
(
ErrorId UNIQUEIDENTIFIER NOT NULL,
Application NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
Host NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
Type NVARCHAR(100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
Source NVARCHAR(60) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
Message NVARCHAR(500) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[User] NVARCHAR(50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
StatusCode INT NOT NULL,
TimeUtc DATETIME NOT NULL,
Sequence INT IDENTITY (1, 1) NOT NULL,
AllXml NTEXT COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
ALTER TABLE dbo.ELMAH_Error WITH NOCHECK ADD
CONSTRAINT PK_ELMAH_Error PRIMARY KEY NONCLUSTERED
(
ErrorId
) ON [PRIMARY]
GO
ALTER TABLE dbo.ELMAH_Error ADD
CONSTRAINT DF_ELMAH_Error_ErrorId DEFAULT (newid()) FOR [ErrorId]
GO
CREATE NONCLUSTERED INDEX IX_ELMAH_Error_App_Time_Seq ON dbo.ELMAH_Error
(
[Application] ASC,
[TimeUtc] DESC,
[Sequence] DESC
) ON [PRIMARY]
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
CREATE PROCEDURE dbo.ELMAH_GetErrorXml
(
@Application NVARCHAR(60),
@ErrorId UNIQUEIDENTIFIER
)
AS
SET NOCOUNT ON
SELECT
AllXml
FROM
ELMAH_Error
WHERE
ErrorId = @ErrorId
AND
Application = @Application
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
CREATE PROCEDURE dbo.ELMAH_GetErrorsXml
(
@Application NVARCHAR(60),
@PageIndex INT = 0,
@PageSize INT = 15,
@TotalCount INT OUTPUT
)
AS
SET NOCOUNT ON
DECLARE @FirstTimeUTC DateTime
DECLARE @FirstSequence int
DECLARE @StartRow int
DECLARE @StartRowIndex int
-- Get the ID of the first error for the requested page
SET @StartRowIndex = @PageIndex * @PageSize + 1
SET ROWCOUNT @StartRowIndex
SELECT
@FirstTimeUTC = TimeUTC,
@FirstSequence = Sequence
FROM
ELMAH_Error
WHERE
Application = @Application
ORDER BY
TimeUTC DESC,
Sequence DESC
-- Now set the row count to the requested page size and get
-- all records below it for the pertaining application.
SET ROWCOUNT @PageSize
SELECT
@TotalCount = COUNT(1)
FROM
ELMAH_Error
WHERE
Application = @Application
SELECT
errorId,
application,
host,
type,
source,
message,
[user],
statusCode,
CONVERT(VARCHAR(50), TimeUtc, 126) + 'Z' time
FROM
ELMAH_Error error
WHERE
Application = @Application
AND
TimeUTC <= @FirstTimeUTC
AND
Sequence <= @FirstSequence
ORDER BY
TimeUTC DESC,
Sequence DESC
FOR
XML AUTO
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO
CREATE PROCEDURE dbo.ELMAH_LogError
(
@ErrorId UNIQUEIDENTIFIER,
@Application NVARCHAR(60),
@Host NVARCHAR(30),
@Type NVARCHAR(100),
@Source NVARCHAR(60),
@Message NVARCHAR(500),
@User NVARCHAR(50),
@AllXml NTEXT,
@StatusCode INT,
@TimeUtc DATETIME
)
AS
SET NOCOUNT ON
INSERT
INTO
ELMAH_Error
(
ErrorId,
Application,
Host,
Type,
Source,
Message,
[User],
AllXml,
StatusCode,
TimeUtc
)
VALUES
(
@ErrorId,
@Application,
@Host,
@Type,
@Source,
@Message,
@User,
@AllXml,
@StatusCode,
@TimeUtc
)
GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO
5 预览
http://localhost/youresiteName/elmah.axd
可能需要先登录login.aspx.如果不需要登录,可以在web.config里删掉相应代码.