#444 [ADO.NET] CUBRIDConnection.Open should check whether the connection string is null and specify this issue in the exception's message

[Jira Trac]

CUBRIDConnection.Open() should check whether the connection string is null and specify this in the exception's message.
Now, if I try to call CUBRIDConnection.Open() without specify the connection string, an exception will be thrown, but the exception message is null.