Where does ELMAH save its data?

c# .net elmah
Joao Leme picture Joao Leme · Feb 18, 2012 · Viewed 13.6k times · Source

I just installed ELMAH.MVC (more info here) and was wondering where its data is saved. I read that you can choose to set up database for storage but seems that the default install uses "in memory"? How does it work? If I recycle the app pool or IIS website do I loose all the data? Thanks!

Answer

Aleksandar Vucetic picture Aleksandar Vucetic · Feb 18, 2012

Yes, by default it uses memory storage. When your application pool is restarted, you loose elmah data. If I remember well, old versions of elmah used App_Data folder for storing xml files...If you want to use database to store logs, just specify connection string in your elmah config section:

<elmah>
...
<errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="ElmahConnectionString"/> 

...
</elmah>

You should have ElmahConnectionString in your connectionStrings section, something like this:

<connectionStrings>
    <add name="ElmahConnectionString "
         connectionString="Initial Catalog=my_database;data source=.\SQLEXPRESS;Integrated Security=SSPI;"
         providerName="System.Data.SqlClient" />
...
</connectionStrings>

Here you can find example web.config file.

Related questions

What is the difference between log4net and ELMAH?

Some people are using ELMAH instead of log4net. What makes it better? I found out about ELMAH in an answer to Stack Overflow question How do I do logging in C#?

Read More
Adding extra information to a custom exception

I've created a custom exception for a very specific problem that can go wrong. I receive data from another system, and I raise the exception if it bombs while trying to parse that data. In my custom exception, I added …

Read More
How to make an HTTP POST web request

Canonical How can I make an HTTP request and send some data using the POST method? I can do a GET request, but I have no idea of how to make a POST request.

Read More