private DataTable GetData()

{

        DataTable dt = new DataTable();

        DataRow dr;

        dt.Columns.Add(new System.Data.DataColumn("Column1", typeof(String)));

        dt.Columns.Add(new System.Data.DataColumn("Column2", typeof(String)));

        dt.Columns.Add(new System.Data.DataColumn("Column3", typeof(String)));

        dr = dt.NewRow();

        dr[0] = "Column1 Item A";

        dr[1] = "Column2 Item B";

        dr[2] = "Column3 Item C";

        dt.Rows.Add(dr);

        dr = dt.NewRow();

        dr[0] = "Column1 Item AA";

        dr[1] = "Column2 Item BB";

        dr[2] = "Column3 Item CC";

        dt.Rows.Add(dr);

        dr = dt.NewRow();

        dr[0] = "Column1 Item AAA";

        dr[1] = "Column2 Item BBB";

        dr[2] = "Column3 Item CCC";

        dt.Rows.Add(dr);

        dr = dt.NewRow();

        dr[0] = "Column1 Item AAAA";

        dr[1] = "Column2 Item BBBB";

        dr[2] = "Column3 Item CCCC";

        dt.Rows.Add(dr);

        return dt;

}

<asp:DataList ID="DataList1" runat="server">

        <HeaderTemplate>

               <table>

                    <tr>

                    <th style="width:150px" align="left">HEADER 1</th>

                    <th style="width:150px" align="left">HEADER 2</th>

                    <th style="width:150px" align="left">HEADER 3</th>

                    </tr>

                </table>

        </HeaderTemplate>

        <ItemTemplate>

                <table>

                    <tr>

                     <td style="width:150px" align="left"> <asp:Label ID="LabelTest1" Text='<%# DataBinder.Eval(Container.DataItem, "Column1") %>' runat="server" /></td>

                     <td style="width:150px" align="left"> <asp:Label ID="LabelTest2" Text='<%# DataBinder.Eval(Container.DataItem, "Column2") %>' runat="server" /></td>

                     <td style="width:150px" align="left"> <asp:Label ID="LabelTest3" Text='<%# DataBinder.Eval(Container.DataItem, "Column3") %>' runat="server" /></td>

                    </tr>

                </table>

        </ItemTemplate>

</asp:DataList>

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            DataTable dt = GetData();

            DataList1.DataSource = dt;

            DataList1.DataBind();

        }

    }