<asp:DataList ID="DataList1" runat="server" RepeatColumns = "2"  RepeatLayout = "Table"  Width = "500px">
<ItemTemplate>
    <br />
    <table cellpadding = "5px" cellspacing = "0" >
    <tr>
        <td>
          <asp:Image ID="Image1" runat="server" ImageUrl='<%# Eval("Photo") %>' Width = "200px" Height = "200px" />
        </td>
    </tr>
    </table>
    <br />
</ItemTemplate>

Table name ===> Photo

Photo_ID as int,
Photo as varbinary(MAX),
Content_Type as varchar(200)