SqlDataAdapter adp = new SqlDataAdapter("select * from tbitem", ConfigurationManager.ConnectionStrings["cn"].ConnectionString);
    DataSet ds = new DataSet();
    adp.Fill(ds);
    DataList1.DataSource = ds;
    DataList1.DataBind();

<asp:DataList ID="DataList1" runat="server">
            <ItemTemplate>
                <b>Name: </b> <%#Eval("itemnam") %><br />
                   <b>Description: </b>
                <asp:Label ID="Label1" runat="server" Text='<%#Eval("itemdescription") %>'></asp:Label>  <br /><br />
            </ItemTemplate>
        </asp:DataList>