daniel-liuzzi / elmah Goto Github PK

Unable to view the details of a error while using the XmlFileErrorLog as
the data store.

This happens because the error is stored in a filename with the format,
error-{0}-{1}.xml where 0 = timestamp and 1 = errorId.

When the method GetError(string id) tries to read the error file the search
pattern is wrong since it doesn't take into account the timestamp part of
the filename.  

(Line203 - XmlFileErrorLog.cs)
string[] files = Directory.GetFiles(LogPath, string.Format("error-{0}.xml",
id));

To fix this issue, line 203 of XmlFileErrorLog.cs should read

string[] files = Directory.GetFiles(LogPath,
string.Format("error-*-{0}.xml", id));

I am interested in an enhancement.

I am using a custom principal\identity to store my user’s roles. I store 
the principal in session and on a new request restore the custom principal 
in Global.asax in the Application_AcquireRequestState event. 

I would like to secure Elmah. I see the suggested methodology is to use 
URL authorization but we do not use URL authorization. I would like to 
secure Elmah by looking at the roles stored in my custom principal but I 
cannot restore my principal from session because session state is not 
exposed by default in HttpHandlers.

Exposing session in an HttpHandler is simply a matter of implementing 
IReadOnlySessionState. IReadOnlySessionState is a marker interface so 
there is no coding involved in implementing the interface. 

Thanks for Elmah and for the consideration of my request.
Glenn

.ps If you ever were going to include session information in Elmah (issue 
12) you would need to do this anyway.

This is the stack trace:

System.NullReferenceException: Object reference not set to an instance of
an object.
   at
System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.I
ExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&
completedSynchronously)

This is happening both in ASP.NET 1.1 and 2.0, with a subtle difference.

The environment is XP2 OS, IIS 5.1 web server, and .NET frameworks 1.1 and 2.0.

These are the steps to reproduce the issue:

1. browse to elmax.axd handler to show the error list.
2. click the "DOWNLOAD LOG" link
3. either download the file or cancel the transfer
4. refresh the page
5. a NullReferenceException exception has been logged by ELMAH and appears
in the error list

Subtle difference in .NET 1.1/2.0: if the csv log is downloaded again and
again, for each try in .NET 1.1 a new NullReferenceException gets logged,
while in .NET 2.0 it happens just on the first attempt to download the log
file.

What steps will reproduce the problem?
1. Have one web site(as a container) which contains many different web 
applications
2. Integrate ELMAH into the web site
3. An error "A" occurs in one of the sub-webapplication
4. Access websiteUrl/elmah.axd to view the error log
5. ERROR: the error "A" does not display in the page.

What is the expected output? What do you see instead?
the error A should be displayed.
but it does not.


What version of the product are you using? On what operating system?
ELMAH-1.0-BETA2-src.zip

Please provide any additional information below.
I have tracked the issue and find a way to fix it.
This issue is caused by the sp: ELMAH_GetErrorsXml
The sp only gets the errors which have the same application. It does not 
consider this situation: A web site contains multiple sub-applications. 
For example, let’s have a website http://localhost:48900 whose application 
will be recorded as /LM/W3SVC/1915900280/Root. And there are some sub-
applications under the http://localhost:48900 such as v.20080102.01 which 
is also a web application. You can access the v.20080102.01 by 
http://localhost:48900/v.20080102.01. Ironically, if there is an error 
occurs in v.20080102.01, the application will be recorded 
as /LM/w3svc/1915900280/ROOT/v.20080102.01
When we access http://localhost:48900/elmah.axd, the sp gets all the 
errors whose application is /LM/W3SVC/1915900280/Root, but ignore these 
errors occurred in the sub-application whose application is 
LM/w3svc/1915900280/ROOT/v.20080102.01
<b>Solution</b>:
So the solution is to modify the sp. Change all the code “Application = 
@Application” to "Application like @Application + '%'" then it will get 
all the error which occurred in the sub-application. (3 places)
and do the samething in ELMAH_GetErrorXml(1 places)

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?


Please use labels and text to provide additional information.

First Thank You!  It's nice having ELMAH.  

A nice Enhancement when viewing errors would be to be able to view the
errors by Website - because you can have one ERROR db to log all errors. So
I can view all, or select from the websites that send error messages to
elmah db. 

Therefore, while I'm still getting around to fixing or ignoring various
errors - I still get a lot of them (thanks to the alexa@crawler!!!)  But it
would be nice to easily view all errors by a certain website if needed.

Thanks!

Two issues
===========
1) When an error is logged, I want to add contextual information to help in
debugging the error.
For e.g. whenever there is a SQLException while executing a stored
procedure, I generally log the database connection string (without
credentials), sp name, sp parameter names and values etc. I have other
"state" which I want to dump to the log too.

2) I want to log an exception to multiple sinks based on severity of the
exception. I am thinking along the lines of the Logging Application block
configuration - where you can attach multiple listeners based on logentry
category.

Solution I am thinking off
==========================
1) Create an Interface for this purpose. Make sure all custom exceptions
(in all web apps in the company) implement this interface. This interface
will have two read only public properties ( severity and IDictionary). I
decided on dictionary with basic types (string), so that it is easy to
deserialize the Elmah "Error" object.

2) At run time the developer creates an instance of the dictionary and logs
the required state in the dictionary as key, value pairs.

3) At run time set the priority property to appropriate value. Most
probably create an Enum list (high, low, medium etc.)

4) Throw the custom exception.

Now, what is the best way to implement the functionality in ELMAH. My thoughts:

Create some sort of configuration schema in web.config, read it in a new
HttpModule object and send the information to multiple sinks

In the Error class, read the IDictionary object and create XML element for
each key value pair.


Thanks
Arvind

In some of the applications I have built, I expect certain exceptions to be
thrown - usually of the security type. It would be great if there was an
easily configurable way to filter out exceptions with Elmah.

Based upon Atif's suggestions, I went ahead and built out a VB version of
this myself inherited from GotDotNet.Elmah.ErrorMailModule that is
configurable in the web.config. This is the first time I am sharing code
online so please be gentle :)

I wrote about the issue here:
http://haacked.com/archive/2007/07/24/securely-implement-elmah-for-plug-and-play
-error-logging.aspx

Basically, our sample config makes elmah.axd wide open for anyone to view.
We should provide an example that shows how to secure it.

As a matter of fact, the download link at the bottom of my post includes a
fully functioning app that demonstrates that.

What steps will reproduce the problem?
1. Add the ErrorLogModule to the configuration.
2. Add the ErrorFilterModule to the configuration.
3. Add error filtering via configuration that uses data-binding.
4. Cause an error to occur that should be filtered.

What is the expected output? 
The error should not be logged by the error logging module.

What do you see instead?
The error is logged by the error logging module and an exception occurs 
during the binding of the data expression that is swallowed by ASP.NET.

While you can do e.Dismiss() to stop it from being logged, the exception 
is still raised.   Would be nice if you could also set some flag where the 
exception is swallowed also?

I haven't had time to look at the code for this, but we have 194,374
ELMAH_Error rows in our database and trying to go to the digestrss page
always times out the page.

I found that sometimes it was handy to have the contents of viewstate when 
the error happened.  So, I modified the ErrorMailModule to attach the 
viewstate to the email as its own file (much like you attach the original 
error).

In the PreSendMail() method, add this:

            //WB attach viewstate to email...
            if (error.Form!=null )
                if (error.Form != null && error.Form["__VIEWSTATE"] != 
null && error.Form["__VIEWSTATE"].Length != 0)
            {
                //
                // Create a temporary file to hold the attachment. Note 
that 
                // the temporary file is created in the location returned 
by
                // System.Web.HttpRuntime.CodegenDir. It is assumed that
                // this code will have sufficient rights to create the
                // temporary file in that area.
                //

                string fileName = "ViewState-" + Guid.NewGuid().ToString() 
+ ".htm";
                string path = Path.Combine(HttpRuntime.CodegenDir, 
fileName);
                try
                {
                    using (StreamWriter attachementWriter = File.CreateText
(path))
                    {
                        attachementWriter.Write(error.Form["__VIEWSTATE"]);
                    }

                    mail.Attachments.Add(new Attachment(path));
                }
                catch (IOException)
                {
                    //
                    // Ignore I/O errors as non-critical. It's not the
                    // end of the world if the attachment could not be
                    // created (though it would be nice). It is more
                    // important to get to deliver the error message!
                    //
                }
            }

Also, in ErrorDetailPage class, RenderError() method, add:
            //WB, lets write out form!
            if (error.Form != null && error.Form.Count > 0)
            {
                NameValueCollection tempForm = new NameValueCollection
(error.Form);
                tempForm.Remove("__EVENTTARGET");
                tempForm.Remove("__EVENTARGUMENT");
                tempForm.Remove("__VIEWSTATE");
                tempForm.Remove("__EVENTVALIDATION");
                RenderCollection(writer, tempForm,
                    "FormData", "Form");

                //WB Render the viewstate also
                if (error.Form["__VIEWSTATE"] != null && error.Form
["__VIEWSTATE"].Length != 0)
                {
                    writer.RenderBeginTag(HtmlTextWriterTag.Br);
                    writer.RenderBeginTag(HtmlTextWriterTag.B);
                    writer.Write("ViewState:");
                    writer.RenderEndTag(); // </b>
                    writer.AddAttribute
(HtmlTextWriterAttribute.Id, "ErrorDetail");
                    writer.RenderBeginTag(HtmlTextWriterTag.Pre);
                    writer.Flush();
                    Server.HtmlEncode(error.Form["__VIEWSTATE"], 
writer.InnerWriter);
                    writer.RenderEndTag(); // </pre>
                    writer.WriteLine();
                }
            }

finally, in ErrorMailHtmlFormatter the method RenderCollections() add:
            //WB, lets write out form!

            if (Error.Form!=null && Error.Form.Count>0)
            {
                NameValueCollection tempForm = new NameValueCollection
(Error.Form);
                tempForm.Remove("__EVENTTARGET");
                tempForm.Remove("__EVENTARGUMENT");
                tempForm.Remove("__VIEWSTATE");
                tempForm.Remove("__EVENTVALIDATION");
                RenderCollection(tempForm, "FormData");
            }

To send the error reports to multiple email addresses, I made the 
following change:

In ErrorMailModule ReportError() method, locate this:
    mail.To.Add(new MailAddress(recipient));
and replace with this:
    string[] toAddresses = recipient.Split(';');
    foreach (string toAddress in toAddresses)
    {
        mail.To.Add(new MailAddress(toAddress));
    }

Now, you can put multiple addresses in the 'To' attribute of the errorMail 
setup like:
    <errorMail from="[email protected]" to="[email protected]; 
[email protected]" subject="Website Error" async="true"/>

What steps will reproduce the problem?
1. Add error filtering via configuration.
2. Cause an error to occur that should be filtered.

What is the expected output? 
The error should be filtered by the error logging module and error mailing 
module.

What do you see instead?
The error is only filtered by the error logging module but still mailed by 
the error mailing module.

We get thousands of exceptions due to the heavy load on our site. Sending
an email per exception is too cumbersome. Ideally, we could have ELMAH send
a daily summary.

Or, it could send an email for the first time an exception occurs in a
certain time-period (say a day).

What steps will reproduce the problem?
View elmah.axd on remote server.

What is the expected output? What do you see instead?
Server is in central time zone, however, the footer on the summary screen
and the timestamps for the errors are off by one hour.  Had several users
try viewing the page from separate time zones (CDT/EDT) with same result.

What version of the product are you using? On what operating system?
Version 1.0.9225.2224 on Windows 2003. 

Please provide any additional information below.
Here is the summary section:

"Powered by ELMAH, version 1.0.9225.2224. Copyright (c) 2007, Atif Aziz.
All rights reserved. Server date is Tuesday, 09 October 2007. Server time
is 18:10:13. All dates and times displayed are in the Central Daylight Time
zone."

In this case the time zone name is correct but the time itself isn't (it
was actually 17:10:13 CDT).

Does the download version specified here, work with .Net 2.0, like this 
one:

http://geekswithblogs.net/angeleyes/archive/2006/06/01/80357.aspx

?

In most of my applications the user must be logged on in order to use the
application.  I would like to modify the ELMAH such that it is possible to
configure ELMAH such that information tied to the user currently logged on
could be logged with the error so that when I am researching an error I can
contact the specific user that generated the error so as to find out how to
be able to reproduce the error.

I would appreciate any suggestions as to how to approach making this
enhancement.

Thanks,

Casey

Hi Atif,

As discussed in an email thread to you last month...

Please find attached an implementation for Oracle.
Oracle.sql contains the scripts required to create the required database 
objects
OracleErrorLog.cs provides the implementation.

I'm using this in a current project without any problems.

It should add nicely into the Beta 2 project.

Regards,

James

What steps will reproduce the problem?
1. There is no instructions to any of this
2. None of your text documents have anything
3.

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?


Please provide any additional information below.

Need to add a roadmap of releases and milestones to serve as a guidance 
for proritizing issues as well as to give visitors an indication of the 
project status.

What steps will reproduce the problem?
1.
2.
3.

What is the expected output? What do you see instead?


Please use labels and text to provide additional information.

When an error is logged by the ErrorLogModule, the ID of the logged error 
is not available for correlation purposes. For example, it hiders 
development of custom error pages that request the user for additional 
information and which can then be correlated through the error ID.

The stylesheet used to display the error log pages is not printer-friendly 
(see src/Elmah/ErrorLog.css). In particular, some regions that are styled 
as scrollable for online viewing experience render clipped when printed.

My Database already has 194,374 exceptions logged and bringing up the error
log is really slow. I took a look and noticed that the code copies every
row into a temp table.

There are more efficient methods of paging than this. I'll attach two
options. 1 for SQL 2000 and one screaming fast option for SQL 2005.

We might want a SQL 2005 provider so we can take advantage of the huge
speed improvements.

What steps will reproduce the problem?
1. Starting my website with ASP.NET Development Server
2. Before site is shown, Exception is thrown in ErrorFilterModule.cs, 
Line67

What is the expected output? What do you see instead?
Exception: Cannot convert string to IHttpModule

What version of the product are you using? On what operating system?
ELMAH 1.0.8922, BETA 1

Problem:
foreach (IHttpModule module in HttpModuleRegistry.GetModules(application)) 
didn't work. Seems to be a NameValueCollections which is returned. 

I had changed it to: 

     HttpModuleCollection modules = (HttpModuleCollection) 
HttpModuleRegistry.GetModules(application); 


     foreach (string moduleName in modules) 
     { 
       IExceptionFiltering filtering = modules[moduleName] as 
IExceptionFiltering; 

Currently, there is no way to view the detailed XML of an error that has 
been logged. More specifically, it is not addressable/accessible via a URL 
that can be just typed into the browser. Adding this could also enable 
some interesting client tool scenarios where retrieving the error 
information in a structured way would be very welcome. It could also add 
reach to other environments and frameworks.

What steps will reproduce the problem?
1. Uncomment ErrorMail httpModule in web.config
2. Set <errorMail /> in the web.config without the cc field
3. View the web application from a browser

What is the expected output? What do you see instead?
Expected: No errors, the application should run normally.

Actual Result: The following Error is displayed:

The required configuration setting 'cc' is missing for the error mailing
module.

Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.

Exception Details: Elmah.ApplicationException: The required configuration
setting 'cc' is missing for the error mailing module.

Source Error:

Line 678:                if (defaultValue == null)
Line 679:                {
Line 680:                    throw new ApplicationException(string.Format(
Line 681:                        "The required configuration setting '{0}'
is missing for the error mailing module.", name));
Line 682:                }

Source File: c:\Documents and
Settings\gerdesj\Desktop\ELMAH-SVN\src\Elmah\ErrorMailModule.cs    Line: 680

Stack Trace:

[ApplicationException: The required configuration setting 'cc' is missing
for the error mailing module.]
   Elmah.ErrorMailModule.GetSetting(IDictionary config, String name, String
defaultValue) in c:\Documents and
Settings\gerdesj\Desktop\ELMAH-SVN\src\Elmah\ErrorMailModule.cs:680
   Elmah.ErrorMailModule.OnInit(HttpApplication application) in
c:\Documents and
Settings\gerdesj\Desktop\ELMAH-SVN\src\Elmah\ErrorMailModule.cs:132
   Elmah.HttpModuleBase.System.Web.IHttpModule.Init(HttpApplication
context) in c:\Documents and
Settings\gerdesj\Desktop\ELMAH-SVN\src\Elmah\HttpModuleBase.cs:54
   System.Web.HttpApplication.InitModulesCommon() +66
   System.Web.HttpApplication.InitInternal(HttpContext context,
HttpApplicationState state, MethodInfo[] handlers) +814

System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext
context) +243
   System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext
context) +106
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +340


What version of the product are you using? On what operating system?
svn build 1.0.8925.1000

Please provide any additional information below.
This field should be an optional field.

One of the additions I made to your product was the addition of 
an 'Enabled' attribute when adding httpModules that handle the errors.

This makes it very easy to turn on/off email notifications and such.  I 
was hoping you might make this change in the shipping code (or add support 
for this 'enabled' property to a base class).

The code is a very easy  change.  In each handler class (like SqlErrorLog 
and ErrorMailModule) you make the following change:

add this to class declaration:
private bool _enabled;

add this to the Init() (like in ErrorMailModule) or constructor (like in 
SqlErrorLog):

//Init() code...
_enabled = Convert.ToBoolean(GetSetting(config, "enabled", 
bool.TrueString)); //WB

//Constructor code
string enabled = (string)config["enabled"]; //WB
if (string.IsNullOrEmpty(enabled)) //WB
    _enabled = true; //WB
else //WB
    _enabled = Convert.ToBoolean(enabled); //WB


Finally, disable handler if appropriate.  For ErrorMailModule, you put 
this in the Init() after setting the _enabled from above:
if (_enabled)
    application.Error += new EventHandler(OnError);

For SqlErrorLog, you put this in the override of Log():
if (!_enabled)
   return;

Add the ability to create UI filters. 

For example, we might add a filter link that expands a filter box (dhtml)
in the UI. That would allow us to pick which Error Codes we're interested in.

Potential Filters:
  * Date range filters.
  * User Filters (starts-with, ends-with, contains)
  * Error Filter (starts-with, ends-with, contains)
  * Type Filter
  * Code Filter

We should have a page to document how to publish an exception to ELMAH
programmatically. Sometimes a developer inherits code that swallows an
exception but still wants to publish it.

I'm using the xml logger. A lot of the time, the information in the details
view is enough to figure out if I need to fix something in the code. But
occasionally I need the form variables to figure out what really happened.
Now I have to open up the right xml file and look at the info. It would be
terrific if the details page would include that information if it existed
in the error entry.

It should be possible to obtain the entire log in CSV format. This can 
enable the use of a number of tools for analyzing and querying the log, 
such as LogParser and Microsoft Excel.

- The CSV format used should conform to RFC 4180 
(http://www.ietf.org/rfc/rfc4180.txt).
- The CSV output should provide headers in the first line.
- Each record need only contain the summary fields; that is, the 
ApplicationName, HostName, Type, Source, Message, User, StatusCode and 
Time properties of the Error object.
- The MIME type of the response should be text/csv along with the 
header=present option.

Recently received issues when trying to handle errors where the message
contains line breaks. e.g. when connecting to a database with incorrect
login credentials the message returned is across two lines:

What steps will reproduce the problem?
===============
1. Change connection string dbname or login credentials so that
authentication will fail (I used sql server 2000).
2. Enter debugging
3. InvalidArgumentException is thrown at line 233 of ErrorMailModule.cs -
"The specified string is not in the form required for a subject."

What is the expected output? What do you see instead?
===============
Cannot open database requested in login 'DATABASENAME'. Login fails.
Login failed for user 'PCNAME\ASPNET'.

If the message is configured to be included in the subject line when using
the ErrorMailModule, an exception is thrown indicating an invalid subject line.


What version of the product are you using? On what operating system?
===============
Win2K3, .NET 2.0, SQL Server 2000

Please provide any additional information below.
This issue has been recreated from the still active gotdotnet workspace
which will be discontinued shortly,
http://www.gotdotnet.com/workspaces/bugtracker/bugdetails.aspx?id=f18bab11-162c-
4267-a46e-72438c38df6f&bugid=005e4343-93c1-42c4-b4b0-d4aaab5751d9

Suggested fix on line 233 of ErrorMailModule.cs
===============
Replace:
mail.Subject = string.Format(subjectFormat, error.Message, error.Type);

With
mail.Subject = string.Format(subjectFormat, Regex.Replace( error.Message,
"[\r\n]+", " ", RegexOptions.Compiled ), error.Type);

I noticed that we are using ntext data type for the sql database, but the 
SQL Server 2005 help says,

Important:
ntext, text, and image data types will be removed in a future version of 
Microsoft SQL Server. Avoid using these data types in new development 
work, and plan to modify applications that currently use them. Use nvarchar
(max), varchar(max), and varbinary(max) instead. For more information, see 
Using Large-Value Data Types.

We might want to change it to be forwards compatible

Added the others log providers as comment

I am using a web grid that was crashing and I was wondering why the error 
wasn't being logged.  After some investigation I found it is throwing an 
exception

System.ArgumentException was unhandled by user code
  Message="'�', hexadecimal value 0x01, is an invalid character."
  Source="System.Xml"

And the value of the string being written (I am using Infragistics 
UltraWebGrid)

ChangedCells�UltraWebGrid1rc_9_1�zz�UltraWebGrid1rc_9_2�zz�ActiveCell�Ultra
WebGrid1rc_9_2

Died on [assembly: Elmah.Scc("$Id: HttpValuesCollection.cs 25 2007-05-04 
23:24:03Z azizatif $")] line 146
 writer.WriteEndElement();

---------------------------------------------------------------------------
Exception Details

System.ArgumentException was unhandled by user code
  Message="'�', hexadecimal value 0x01, is an invalid character."
  Source="System.Xml"
  StackTrace:
       at System.Xml.XmlEncodedRawTextWriter.InvalidXmlChar(Int32 ch, 
Char* pDst, Boolean entitize)
       at System.Xml.XmlEncodedRawTextWriter.WriteAttributeTextBlock(Char* 
pSrc, Char* pSrcEnd)
       at System.Xml.XmlEncodedRawTextWriter.WriteString(String text)
       at System.Xml.XmlEncodedRawTextWriterIndent.WriteString(String text)
       at System.Xml.XmlWellFormedWriter.WriteString(String text)
       at System.Xml.XmlWriter.WriteAttributeString(String localName, 
String value)
       at Elmah.HttpValuesCollection.Elmah.IXmlExportable.ToXml(XmlWriter 
writer)
       at Elmah.Error.WriteCollection(XmlWriter writer, String name, 
NameValueCollection collection)
       at Elmah.Error.WriteInnerXml(XmlWriter writer)
       at Elmah.Error.ToXml(XmlWriter writer)
       at Elmah.SqlErrorLog.Log(Error error)
       at WebSettings.DataOperation.UpdateXmlByValueDescription(DataSet 
ds, String xml) in e:\Userdata\sameera\Dev2.7
\App_Code\Settings\DataOperation.cs:line 433
       at WebSettings.subLocationList.Update() in 
e:\Userdata\sameera\Dev2.7\Settings\subLocationList.aspx.cs:line 480
       at WebSettings.subLocationList.btnSave_Click(Object sender, 
EventArgs e) in e:\Userdata\sameera\Dev2.7
\Settings\subLocationList.aspx.cs:line 113
       at System.Web.UI.WebControls.LinkButton.OnClick(EventArgs e)
       at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String 
eventArgument)
       at 
System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.Ra
isePostBackEvent(String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler 
sourceControl, String eventArgument)
       at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection 
postData)
       at System.Web.UI.Page.ProcessRequestMain(Boolean 
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
---------------------------------------------------------------------------

Call stack
    [External Code] 
    Elmah.DLL!Elmah.HttpValuesCollection.Elmah.IXmlExportable.ToXml
(System.Xml.XmlWriter writer = {System.Xml.XmlWellFormedWriter}) Line 146
    C#
>   Elmah.DLL!Elmah.Error.WriteCollection(System.Xml.XmlWriter writer 
= {System.Xml.XmlWellFormedWriter}, string name = "form", 
System.Collections.Specialized.NameValueCollection collection = 
{Elmah.HttpValuesCollection}) Line 488  C#
    Elmah.DLL!Elmah.Error.WriteInnerXml(System.Xml.XmlWriter writer = 
{System.Xml.XmlWellFormedWriter}) Line 475 + 0x11 bytes C#
    Elmah.DLL!Elmah.Error.ToXml(System.Xml.XmlWriter writer = 
{System.Xml.XmlWellFormedWriter}) Line 439  C#
    Elmah.DLL!Elmah.SqlErrorLog.Log(Elmah.Error error = {Access to the 
path 'E:\Userdata\sameera\Dev2.7\Configuration\LocationList.xml' is 
denied.}) Line 170  C#
    App_SubCode_Settings.ebplpfnq.dll!
WebSettings.DataOperation.UpdateXmlByValueDescription(System.Data.DataSet 
ds = {System.Data.DataSet}, string xml = "LocationList.xml") Line 433 + 
0x30 bytes  C#
    App_Web_xvi5k5qk.dll!WebSettings.subLocationList.Update() Line 480 
+ 0x12 bytes    C#
    App_Web_xvi5k5qk.dll!WebSettings.subLocationList.btnSave_Click
(object sender = {Text = "<img src='../Common/images/icon_save.gif' 
border=\"0\">Save "}, System.EventArgs e = {System.EventArgs}) Line 113 + 
0x7 bytes   C#
    [External Code] 

When the following code is executed:
Error error = new Error(ex, HttpContext.Current);
GotDotNet.Elmah.ErrorLog.Default.Log(error);

Include an option to perform the "errorMail" action either automatically
when .Log() is called or by specifying that an email should be sent in the
parameters.

See the discussion at:
http://groups.google.com/group/elmah/browse_thread/thread/b17cb4b5308b8013

I would propose to implement a Session state serializer. Take a look to 
http://www.codeproject.com/aspnet/exploresessionandcache.asp. I think it 
would be nice to have something like this. 

Another idea would be to save trace messages of a page. 
http://msdn2.microsoft.com/en-us/library/b0ectfxd.aspx. 

Kind regards 
Daniel

XmlFileErrorLog current enumerates all files in the log path when building 
results for GetErrors. It uses Directory.GetFiles to do this and because 
that normally yields hidden and system files, it makes the solution 
fragile. XmlFileErrorLog should exclude hidden and system files.

Hi, 

I'm using ELMAH-1.0-BETA1a-bin on .NET 2.0 app. Using VS2005 and local 
development web server. Copied elmah.dll from bin\net2.0\release folder in 
zip archive. Followed instructions in sample web.config. When I enable 
<errorFilter> in the <elmah> section, I get the following error.

Unable to cast object of type 'System.String' to 
type 'System.Web.IHttpModule'.
[InvalidCastException: Unable to cast object of type 'System.String' to 
type 'System.Web.IHttpModule'.]
   Elmah.ErrorFilterModule.Init(HttpApplication application) +149
   System.Web.HttpApplication.InitModulesCommon() +66
   System.Web.HttpApplication.InitInternal(HttpContext context, 
HttpApplicationState state, MethodInfo[] handlers) +1006
   System.Web.HttpApplicationFactory.GetNormalApplicationInstance
(HttpContext context) +241
   System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext 
context) +114
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +350

I have attached a copy of the web.config. Offending lines are 13-17.

Thanks,

James

In the current version of ELMAH, the application column is set 
to '/LM/W3SVC/170/ROOT' by the SQLLogger.

In this beta version, it is set to '/'.

The SQLiteErrorLog implementation is not expected to be used in shared log 
scenarios, where multiple applications may share a single back-end 
database on a single machine or across a network of machines (SqlErrorLog 
is more appropriate for such cases). Consequently the isolation and 
filtering per application should be removed.

For background, see also:

- http://www.sqlite.org/whentouse.html
- http://www.sqlite.org/lockingv3.html

The monospaced font used for the exception detail appears illegibly small 
in Firefox but okay in IE.

Retrieving errors with the XmlFileErrorLog throws an exception if the
folder the logPath configuration attribute points to contains other files,
non-XML or XML but with a different scheme - say, not containing error logs.

What steps will reproduce the problem?

Browse to the about page of an ELMAH installation and click the button 
that checks for an update.

What is the expected output? What do you see instead?

Expected a message indicating that the version is up to date, but instead 
the script throws a JavaScript error saying that currentVersion is 
undefined on line 70.

Can we also have a CC and BCC attribute included into the Component. I was
able to modify the code and add a CC feature to the previous version, but
its a bit of a problem everytime managing the code and modifying it or the
system throws an error if i forget to do so.

And i personally feel its required cause sometimes i want the email to got
to the developer as well directly and a CC for myself to kwp track of the
erros in the system.

Thanks for taking your time and i would really appreciate if this can be
included in the pubic release.

Thanks,
Prashant Atal

The reliance on stored procs means I can't use ELMAH for other databases. 

Personally, I'd like to see ELMAH make use of Subsonic which would buy
other db support for free.

However, given the relatively few queries ELMAH has to support, another
option might be to have a provider model. One that uses StoredProcs, the
other that uses Prepared SQL Queries from code so that it works with Sqlite.

Some, especially public-facing, web sites expect to see a lot of errors 
caused by visitors and/or bots. For these sites, receiving an e-mail for 
every error or subscribing to the current RSS feed that lists every error 
as a separate channel item can be overwhelming. It would therefore help to 
add an RSS feed that provides a dialy digest of errors. Every item of this 
feed will represent a single day with all errors from that day becoming 
part of the item description. The item description will be an HTML 
fragment containing a summary of the day's errors (perhaps just the error 
messages). Each error summary should be a hyperlink that points to the 
error details page.

The issue was created from the discussion in issue #14 (see 
http://code.google.com/p/elmah/issues/detail?id=14).