How to display Label Letter By Letter In C#

Currently i'm working on Lucky Draw System. I've already can call out the data from database and display it using label. But how can i make it display one by one in label to make the system more interesting.

This is my code :

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
string constr = ConfigurationManager.ConnectionStrings["lucky"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string query = "SELECT TOP 1[EMP_ID]FROM EMPLOYEES WHERE[Attendance] = 'Present'ORDER BY NEWID()";
using (SqlConnection con = new SqlConnection(constr))
{
using (SqlCommand cmd = new SqlCommand(query))
{
using (SqlDataAdapter sda = new SqlDataAdapter())
{
cmd.Connection = con;
sda.SelectCommand = cmd;
using (DataTable dt = new DataTable())
{
sda.Fill(dt);
if (dt.Rows.Count > 0)
{
Label1.Text = dt.Rows[0]["EMP_ID"].ToString();
}
else
{
Label1.Text += "Cannot draw! ";
}
}
}
}
}
}
}