MySQL数据连接和ADO.NET

是的,这是可能的。ADO.NET为此提供了一个API。你必须这样做:

string providerName;

if (true/*add your logic here*/)
   providerName = "System.Data.SqlClient";
else
   providerName = "MySql.Data.MySqlClient"

DbProviderFactory factory = DbProviderFactories.GetFactory(providerName);

DbConnection connection = factory.CreateConnection();
DbCommand command = factory.CreateCommand();

// ... and so on

完成后,请确保关闭数据读取器。