Hi Waghuldey,
I have modified your code. Refer the below code.
HTML
MasterPage.master
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
        </asp:ContentPlaceHolder>
    </div>
    </form>
</body>
</html>
Default2.aspx
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
    <script type="text/javascript" src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/js/bootstrap.min.js"></script>
    <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.2/css/bootstrap.min.css" />
    <link type="text/css" rel="stylesheet" href="https://cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css" />
    <script type="text/javascript" src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
    <script type="text/javascript">
        $(document).ready(function () {
            $('[id*=tblCustomers]').DataTable();
        });
    </script>
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
    <div>
        <div class="col-md-offset-2 col-lg-offset-2  col-md-8 col-lg-8 col-md-offset-2 col-lg-offset-2">
            <div class="panel panel-info">
                <div class="panel-heading">
                    <div class="title">
                        DataTable
                    </div>
                </div>
                <div class="panel-body">
                    <asp:Repeater ID="rptCustomers" runat="server">
                        <HeaderTemplate>
                            <table id="tblCustomers" class="table table-striped table-bordered" border="0" cellpadding="0"
                                cellspacing="0">
                                <thead>
                                    <tr>
                                        <th>
                                            Employee Number
                                        </th>
                                        <th>
                                            Name
                                        </th>
                                        <th>
                                            Designation
                                        </th>
                                    </tr>
                                </thead>
                                <tbody>
                        </HeaderTemplate>
                        <ItemTemplate>
                            <tr>
                                <td>
                                    <%#DataBinder.Eval(Container.DataItem,"EmpNumber") %>
                                </td>
                                <td>
                                    <%#DataBinder.Eval(Container.DataItem,"Name") %>
                                </td>
                                <td>
                                    <%#DataBinder.Eval(Container.DataItem, "Designation")%>
                                </td>
                            </tr>
                        </ItemTemplate>
                        <FooterTemplate>
                            </tbody></table>
                        </FooterTemplate>
                    </asp:Repeater>
                </div>
            </div>
        </div>
    </div>
</asp:Content>
Code
Default2.aspx.cs
protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { 
        new DataColumn("EmpNumber", typeof(int)),
        new DataColumn("Name", typeof(string)),
        new DataColumn("Designation",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "Developer");
        dt.Rows.Add(2, "Mudassar Khan", "CEO");
        dt.Rows.Add(3, "Suzanne Mathews", "Tester");
        dt.Rows.Add(4, "Robert Schidner", "Manager");
        rptCustomers.DataSource = dt;
        rptCustomers.DataBind();
    }
}
Screenshot
