用C＃连接mysql

Question

I'm building ac# windows application which will connect with the mysql database in a remote server.

I'm using the following connect script

string connectionString;
connectionString = "SERVER = eu5.org;UID = myuserid; PASSWORD = mypassword; DATABASE = mydatabasename;";
connection = new MySqlConnection(connectionString);

It shows the error couldn't connect to the database.

PS: Mysql database is at eu5.org server

Answer 1

Personally I prefer to use the MySql Workbench IDE for testing connections and working (Querying) the database directly where possible. Most hosted databases that I have worked with normally define the Server as Instance.[DomainName] so I would have expected your server URL to be something like MySql1.eu5.org

Below is a connection string that I tested using the MySql Connector , change the parameters.

<connectionStrings>
    <add name="MySqlConnection" connectionString="server=INSTANCENAME.DOMAINNAME.COM;UID=USERNAME;password=PASSWORD;database=DATABASENAME;Persist Security Info=True;" providerName="MySql.Data.MySqlClient"/>

Answer 2

确保应该启动服务器...

Answer 3

Your code is correct. Use a browser for MySQL, like http://mysql-query-browser-for-windows.apponic.com/ to check if your database is available.

Answer 4

Just read the FAQ:

Many people want to only use database, but their site is hosted elsewhere. We provide free database for websites hosted with us. For that reason, external access is blocked without exception.

--> http://www.freewebhostingarea.com/faq.html

so it's not possible to access your MySQL-DB from external sources. only localhost will be allowed