Unable to display all data into repeater list

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ASP.NET

Hi guys,
I have a table through which i want to display data into repeater, i am unable to display all data but just first record. kindly help me rectify my code.

What I have tried:

<asp:Repeater ID="RepDetails" runat="server" >
<HeaderTemplate>
<table style=" border:1px solid #df5015; width:670px" cellpadding="0">
<tr style="background-color:#df5015; color:White;  width:670px;">
<td colspan="2">
Searched Result
</td>
</tr>
</HeaderTemplate>
<itemtemplate>
<tr>
<td>
CONTACT PERSON:
<asp:Label ID="LblCntctPrsn" runat="server" Text='<%#Eval("CONTACTPRSN") %>'/>
</td>
</tr>
<tr>
<td>
EMAIL ID:
<asp:Label ID="LblEmail" runat="server" Text='<%#Eval("EMAILID") %>'/>
</td>
</tr>
<tr>
<td>
<table style="background-color:#EBEFF0;border-removed1px dotted #df5015;border-removed1px solid #df5015; width:670px">
<tr>
<td>Post Date:<asp:Label ID="lblDate" runat="server" Font-Bold="true" /></td>
<td></td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2"> </td>
</tr>
</itemtemplate>
<alternatingitemtemplate>

<tr>
<td>
CONTACT PERSON:
<asp:Label ID="LblCntctPrsn" runat="server" Text='<%#Eval("CONTACTPRSN") %>'/>
</td>
</tr>
<tr>
<td>
EMAIL ID:
<asp:Label ID="LblEmail" runat="server" Text='<%#Eval("EMAILID") %>'/>
</td>
</tr>
<tr>
<td>
<table style="background-color:#EBEFF0;border-removed1px dotted #df5015;border-removed1px solid #df5015; width:670px">
<tr>
<td>Post Date:<asp:Label ID="lblDate" runat="server" Font-Bold="true" /></td>
<td></td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2"> </td>
</tr>
</alternatingitemtemplate>
<footertemplate>
</footertemplate></table>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Configuration;
using System.Data.SqlClient;
using System.Data;

public partial class _Default : System.Web.UI.Page
{
    SqlConnection conn = null;
    SqlCommand cmd = null;
    string con = ConfigurationManager.ConnectionStrings["Online1"].ConnectionString;
    protected void Page_Load(object sender, EventArgs e)
    {
        try
        {
            SqlConnection conn = new SqlConnection(con);
            SqlCommand chk = new SqlCommand("select CONTACTPRSN,EMAILID from EMPLYRSIGNUP ", conn);
            conn.Open();
            DataSet ds = new DataSet();
            SqlDataAdapter da = new SqlDataAdapter(chk);
            da.Fill(ds);
            RepDetails.DataSource = ds;
            RepDetails.DataBind();
        }
        catch (Exception ex)
        {
            Label1.Text = ("Data Loading Failed" + ex.Message);
        }
    }
}