How to throw a SqlException when needed for mocking and unit testing?

Question

I am trying to test some exceptions in my project and one of the Exceptions I catch is SQlException.

It seems that you can\'t go new SqlException(

Answer 1

This should work:

SqlConnection bogusConn = 
    new SqlConnection("Data Source=myServerAddress;Initial
    Catalog=myDataBase;User Id=myUsername;Password=myPassword;");
bogusConn.Open();

That takes a bit before it throws the exception, so I think this would work even faster:

SqlCommand bogusCommand = new SqlCommand();
bogusCommand.ExecuteScalar();

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Update: nope, the second approach throws an ArgumentException, not a SqlException.

Update 2: this works much faster (the SqlException is thrown in less than a second):

SqlConnection bogusConn = new SqlConnection("Data Source=localhost;Initial
    Catalog=myDataBase;User Id=myUsername;Password=myPassword;Connection
    Timeout=1");
bogusConn.Open();