Hello everybody i have a MySQL connection problem in C#. This is my problem in the picture. thanks for help me.
What a hideous sidebar, hahaha, I'm sorry.
The problem is that the MySQL client in your C# program cannot connect to the MySQL server. Are you able to log into the MySQL server yourself? You may be connecting from another machine with a user that is only locally available.
Please check the permissions/credentials of the user you're trying to log in to your server as.
Also check that the server is online, and on what ip/host/domain/port it is running.
This is a typical connection problem. There is nothing wrong with MonoDevelop, or the libraries it uses. It is your configuration, code and/or system that produces this error, so without more information on the set-up there is nothing more I/we can help with right now.
Additionally, did you install the MySQL connector/NET?
Download link: http://dev.mysql.com/downloads/connector/net/