Print DataList Items (content) with Page Breaks using JavaScript in ASP.Net

Here I have created sample that may help you out.

HTML

<div>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script type="text/javascript">
        function Print() {
            var count = $('[id*=tblCustomer]').length;
            var pagebreakcount = 4;
            var i = 1;
            $('[id*=tblCustomer]').each(function () {
                if (i % pagebreakcount == 0) {
                    $(this).attr('style', 'page-break-after: always');
                }
                i++;
            });
            var divContents = document.getElementById("dvCustomers").innerHTML;
            var printWindow = window.open('', '', 'height=200,width=400');
            printWindow.document.write(divContents);
            printWindow.document.close();
            printWindow.print();
            Redirect();
        };
        function Redirect() {
            setTimeout(function () {
                location.href = location.href;
            }, 5000);
        }
    </script>
    <asp:Button ID="btnPrint" Text="Print" runat="server" OnClick="Print" />
    <br />
    <div id="dvCustomers">
        <asp:DataList ID="dlCustomers" runat="server" RepeatColumns="3">
            <ItemTemplate>
                <table id="tblCustomer">
                    <tr>
                        <td>
                            <b><u>
                                <%# Eval("ContactName") %></u></b>
                        </td>
                    </tr>
                    <tr>
                        <td class="body">
                            <b>City: </b>
                            <%# Eval("City") %><br />
                            <b>Postal Code: </b>
                            <%# Eval("PostalCode") %><br />
                            <b>Country: </b>
                            <%# Eval("Country")%><br />
                            <b>Phone: </b>
                            <%# Eval("Phone")%><br />
                            <b>Fax: </b>
                            <%# Eval("Fax")%>
                        </td>
                    </tr>
                </table>
            </ItemTemplate>
        </asp:DataList>
    </div>
</div>

Code

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        this.GetCustomers();
    }
}

protected void Print(object sender, EventArgs e)
{
    dlCustomers.RepeatColumns = 1;
    this.ClientScript.RegisterStartupScript(this.GetType(), "Print", "Print()", true);
}

private void GetCustomers()
{
    string constring = ConfigurationManager.ConnectionStrings["conString"].ConnectionString;
    using (SqlConnection con = new SqlConnection(constring))
    {
        using (SqlCommand cmd = new SqlCommand("SELECT TOP 15 ContactName,City,PostalCode,Country,Phone,Fax FROM Customers", con))
        {
            cmd.CommandType = CommandType.Text;
            con.Open();
            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            dlCustomers.DataSource = dt;
            dlCustomers.DataBind();
        }
    }
}

Screenshot