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

In my case , the problem was modifying tag name in app.config file by mistake just compare your app.config file with another old one .. You will find out the problem ...