<connectionStrings>
    <add name="MySQLConn" connectionString=
    "SERVER=localhost;DATABASE=firstaspdatabase;UID=root;PWD='' ;"
    providerName="MySql.Data.MySqlClient" />
</connectionStrings>

<%@ Import Namespace="MySql.Data.MySqlClient" %>

<form id="form1" runat="server">
<asp:SqlDataSource id="Apts_City"
    ConnectionString ="<%$ ConnectionStrings:MySQLConn %>"
    SelectCommand="SELECT * FROM Person;"
    runat="server"/>

    <asp:DropDownList id="DropDown1" DataSourceID="Apts_City"
     runat="server" />
</form>

using MySql.Data.MySqlClient;
using System.Data;