Exception: type initializer for 'system.data.sqlclient.sqlconnection'?

Question

I couldn\'t figure out what is the problem for this exception.

The type initializer for \'System.Data.SqlClient.SqlConnection\' threw an exception

Answer 1

I also faced that exception once when I reopened my project. In my case the Config file had empty tag and key as you can see below. I removed the appSettings tag to fix the problem.

< ?xml version="1.0" encoding="utf-8" ?>

< configuration>

< appSettings>

< add key="" value="site"/>

< /appSettings>

< configSections>

< /configSections>

< /configuration>