How to connnect to multiple databases on same page in ASP.Net

Here i am retreiving the data from two database.

HTML

<div>
    Northwind database
    <asp:GridView ID="gvEmployees" AutoGenerateColumns="false" runat="server">
        <Columns>
            <asp:BoundField DataField="EmployeeId" HeaderText="Employee Id" />
            <asp:BoundField DataField="FirstName" HeaderText="First Name" />
            <asp:BoundField DataField="LastName" HeaderText="Last Name" />
        </Columns>
    </asp:GridView>
    <hr />
    Student database
    <asp:GridView ID="gvStudents" AutoGenerateColumns="false" runat="server">
        <Columns>
            <asp:BoundField DataField="StudentId" HeaderText="Student Id" />
            <asp:BoundField DataField="StudentName" HeaderText="Student Name" />
            <asp:BoundField DataField="Status" HeaderText="Status" />
        </Columns>
    </asp:GridView>
</div>

Namespaces

using System.Data;
using System.Data.Sql;
using System.Data.SqlClient;

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        string constrStudents = ConfigurationManager.ConnectionStrings["Students"].ConnectionString;
        string constrNorthwind = ConfigurationManager.ConnectionStrings["Northwind"].ConnectionString;
        string employees = "SELECT EmployeeId, FirstName,LastName FROM Employees";
        string students = "SELECT * FROM Students";
        this.PopulateEmployees(this.gvEmployees, employees, constrNorthwind);
        this.PopulateEmployees(this.gvStudents, students, constrStudents);
    }
}

private void PopulateEmployees(GridView gv, string query, string constr)
{
    using (SqlConnection con = new SqlConnection(constr))
    {
        using (SqlCommand cmd = new SqlCommand(query, con))
        {
            using (SqlDataAdapter da = new SqlDataAdapter(cmd))
            {
                DataTable dt = new DataTable();
                da.Fill(dt);
                gv.DataSource = dt;
                gv.DataBind();
            }
        }
    }
}

Screenshot