我的SQL连接错误Microsoft] [ODBC驱动程序管理器]找不到数据源名称，并且未指定默认驱动程序

Question

I am trying to connect to MySql database with c#. But i am getting this error.

   Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified.

My c# code

 Connection con = new Connection();
        Recordset rs = new Recordset();
        string conStr = ConfigurationManager.ConnectionStrings["DefaultConnection"].ToString();
        con.Open(conStr);  // Here its throwing the error

Connection string:

<add name="DefaultConnection" 
         connectionString="DRIVER={MySQL ODBC 5.2w Driver};Server=localhost;Database=laundrydatabase;Uid=root;Pwd=123"
         />

I am using

mysql-connector-net-6.6.5
MySQL ODBC 5.1 Driver}

Answer 1

You have the MySQL ODBC driver 5.1 installed but your connection string says version 5.2. This means the system cannot find the driver and that is indicated by the second half of the error message. the easiest way to fix is to remove the driver reference from connection string:

Server=localhost;Database=laundrydatabase;Uid=root;Pwd=123

Or if you need to specify the driver, fix the reference like this:

Driver={MySQL ODBC 5.1 Driver};Server=localhost;Database=laundrydatabase;Uid=root;Pwd=123