<asp:Repeater ID="PalletsRepeater" runat="server" OnItemDataBound="PalletsRepeater_ItemDataBound">
                    <ItemTemplate>
                        <div style="margin-left:20px; margin-top:5px;">
                            <asp:Label lbl="lblPalletId" Text='<%#"Pallet "+Eval("PALLETID")%>' runat="server" />
                            <asp:Label Text=", Qty = " CssClass="field-label-blue" runat="server" />
                            <asp:TextBox ID="txtPalletItemQty" runat="server" Text='<%# Eval("ITEMQTY") %>' step="1" type="number" />
                        </div>
                    </ItemTemplate>
                </asp:Repeater>

foreach (RepeaterItem repeaterRow in PalletsRepeater.Items)
            {
                // This fails.
                string palletId = ((System.Web.UI.WebControls.Label)repeaterRow.FindControl("lblPalletId")).Text;
                // This works.
                string palletItemQty = ((System.Web.UI.WebControls.TextBox)repeaterRow.FindControl("txtPalletItemQty")).Text;


            }
        }