Ecommerce Products Minimum and Maximum Quantity

AddToCartWidget.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="AddToCartWidget.ascx.cs" Inherits="SitefinityWebApp.Templates.AddToCartWidget" %>
<%@ Register TagPrefix="sf" Namespace="Telerik.Sitefinity.Web.UI" Assembly="Telerik.Sitefinity" %>
<asp:UpdatePanel ID="UpdatePanel" runat="server">
	<ContentTemplate>
		<sf:Message runat="server" ID="addedToCartMessage" CssClass="sfMessage sfTopMsg"
			RemoveAfter="10000" />
	</ContentTemplate>
</asp:UpdatePanel>
<asp:Label ID="quantityLabel" runat="server" Text='<%$Resources:OrdersResources, QuantityColon %>'
	AssociatedControlID="quantity" CssClass="sfTxtLbl" />
<asp:RequiredFieldValidator ID="quantityRequiredFieldValidator" runat="server" ControlToValidate="quantity"
	ValidationGroup="addToCart" Display="Dynamic" CssClass="sfErrorWrp">
	<span class="sfError">
		<asp:Literal runat="server" ID="lProductQuantityIsRequired" Text="<%$Resources:OrdersResources, ProductQuantityIsRequired %>" /></span>
</asp:RequiredFieldValidator>
<asp:RangeValidator ID="quantityValidator" runat="server" MinimumValue="1" MaximumValue="9999"
	ControlToValidate="quantity" ValidationGroup="addToCart" Type="Integer" Display="Dynamic"
	CssClass="sfErrorWrp">
	<span class="sfError">Invalid Quantity</span>
</asp:RangeValidator>
<asp:TextBox ID="quantity" runat="server" CssClass="sfTxt sfQuantity" />
<asp:Button ID="addToCartButton" runat="server" Text='<%$Resources:OrdersResources, AddToCart %>'
	ValidationGroup="addToCart" CssClass="sfAddToCartBtn" />

AddToCartWidget.ascx.cs

public partial class AddToCartWidget : System.Web.UI.UserControl
{
	protected void Page_Load(object sender, EventArgs e)
	{
                // only setup on first load
                if (IsPostBack) return;

		// Get the product url parameter
		var itemUrl = this.GetUrlParameterString(true);
		string redirectUrl = "";

		// Get the product from the Catalog
		var manager = CatalogManager.GetManager();
		var product = manager.GetItemFromUrl(typeof(Product), itemUrl, out redirectUrl) as Product;
		if (product == null) return;

		// ensure type matches expected
		var type = product.GetType().Name;
		if (!type.Contains("generalproduct")) return;

		// get min/max values and bind to validation
		var min = product.GetValue<decimal>("Minimum");
		var max = product.GetValue<decimal>("Maximum");
		quantityValidator.MinimumValue = min.ToString();
		quantityValidator.MaximumValue = max.ToString();

		// set input value to match minimum
		quantity.Text = min.ToString();
	}
}

ShoppingCart.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ShoppingCart.ascx.cs" Inherits="SitefinityWebApp.Templates.ShoppingCart" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<%@ Register Assembly="Telerik.Sitefinity.Ecommerce" Namespace="Telerik.Sitefinity.Modules.Ecommerce.Catalog.Web.UI.Fields"
	TagPrefix="sfCatalog" %>
<%@ Register TagPrefix="sf" Namespace="Telerik.Sitefinity.Web.UI" Assembly="Telerik.Sitefinity" %>
<%@ Register TagPrefix="orders" Namespace="Telerik.Sitefinity.Modules.Ecommerce.Orders.Web.UI"
	Assembly="Telerik.Sitefinity.Ecommerce" %>
<%@ OutputCache Duration="1" VaryByParam="*" %>
<%@ Import Namespace="Telerik.Sitefinity.Ecommerce" %>
<%@ Import Namespace="Telerik.Sitefinity.Modules.Ecommerce" %>
<div class="sfshoppingCartWrp">
	<!-- This container is used to display warning messages about set up of the widget;
         when control is set correctly, this container is invisible -->
	<div id="widgetStatus" runat="server" visible="false" class="sfshoppingCartStatus">
		<asp:Label ID="widgetStatusMessage" runat="server" />
	</div>
	<asp:PlaceHolder ID="widgetBody" runat="server">
		<h1 class="sfshoppingCartTitle" id="widgetHeading" runat="server">
			<asp:Literal ID="Literal1" runat="server" Text='<%$Resources:OrdersResources, ShoppingCart %>' />
		</h1>
		<sf:Message runat="server" ID="cartUpdateMessage" />
		<asp:PlaceHolder runat="server" ID="itemsCountPlaceholder">
			<div class="sfProductsInCart">
				<asp:Literal ID="productsCountLabel" runat="server" />&nbsp;<asp:Literal 
					runat="server" Text='<%$Resources:OrdersResources, items %>' />
			</div>
		</asp:PlaceHolder>
		<telerik:RadGrid ID="shoppingCartGrid" runat="server" Skin="Basic" ShowFooter="False"
			EnableEmbeddedBaseStylesheet="false" EnableEmbeddedSkins="false" OnItemDataBound="shoppingCartGrid_ItemDataBound">
			<MasterTableView AutoGenerateColumns="false" DataKeyNames="Id">
				<Columns>
					<telerik:GridTemplateColumn HeaderText='' UniqueName="ProductImage" ItemStyle-CssClass="sfItmTmbCol"
						HeaderStyle-CssClass="sfItmTmbCol">
						<ItemTemplate>
							<div class="sfproductTmbWrp">
								<img src='<%# HttpUtility.HtmlAttributeEncode(Eval("ThumbnailUrl") as string) %>'
									alt='<%# Eval("ThumbnailAlternativeText") %>' class="sfproductTmb" />
							</div>
						</ItemTemplate>
					</telerik:GridTemplateColumn>
					<telerik:GridTemplateColumn HeaderText='<%$Resources:OrdersResources, ProductDescription %>'
						UniqueName="ProductDescription" ItemStyle-CssClass="sfItmTitleCol" HeaderStyle-CssClass="sfItmTitleCol">
						<ItemTemplate>
							<div class="sfItmTitleWrp">
								<asp:HyperLink ID="productTitleLink" runat="server" Text='<%# Eval("Title") %>' CssClass="sfItmTitle" />
							</div>
							<asp:Label ID="OutOfStock" CssClass="sfItemOutOfStockMessage" Text="<%$Resources:OrdersResources, OutOfStock %>"
								Visible="false" runat="server" />
							<asp:Label ID="InventoryChange" CssClass="sfItmTitleInventoryChangeCol" Text="<%$Resources:OrdersResources, InventoryChange %>"
								Visible="false" runat="server" />
							<div class="sfItmLnksWrp">
								<asp:LinkButton ID="removeButton" runat="server" Text='<%$Resources:OrdersResources, Remove %>'
									CommandName="remove" CssClass="sfItmRemove" />
							</div>
						</ItemTemplate>
					</telerik:GridTemplateColumn>
					<telerik:GridTemplateColumn HeaderText='<%$Resources:OrdersResources, ProductOptions %>'
						UniqueName="Options" ItemStyle-CssClass="sfItmOptionsCol" HeaderStyle-CssClass="sfItmOptionsCol">
						<ItemTemplate>
							<div>
								<%# Eval("Options")%>
							</div>
						</ItemTemplate>
					</telerik:GridTemplateColumn>
					<telerik:GridTemplateColumn UniqueName="BasePrice" ItemStyle-CssClass="sfSingleItmPriceCol"
						HeaderStyle-CssClass="sfSingleItmPriceCol">
						<ItemTemplate>
							<sfCatalog:DisplayPriceField ID="displayPriceField" ObjectType="Cart" ObjectId='<%# Eval("Id") %>'
								runat="server" />
						</ItemTemplate>
					</telerik:GridTemplateColumn>
					<telerik:GridTemplateColumn UniqueName="ProductQuantity" HeaderText="<%$Resources:OrdersResources, Quantity %>"
						ItemStyle-CssClass="sfItmQuantityCol" HeaderStyle-CssClass="sfItmQuantityCol">
						<ItemTemplate>
							<span>x</span>
							<asp:HiddenField ID="cartDetailId" runat="server" />
							<asp:TextBox ID="quantity" runat="server" Text='<%# Eval("Quantity") %>' CssClass="sfTxt" />
							<asp:RangeValidator ID="quantityValidator" runat="server" MinimumValue="0" MaximumValue="9999"
								ControlToValidate="quantity" Type="Integer" Display="Dynamic" CssClass="sfErrorWrp">
								<span class="sfError">
									<asp:Literal ID="Literal2" runat="server" Text="<%$Resources: OrdersResources, ProductQuantityIsInvalidInShoppingCart %>" />
								</span>
							</asp:RangeValidator>
						</ItemTemplate>
					</telerik:GridTemplateColumn>
					<telerik:GridTemplateColumn UniqueName="NewPrice" HeaderText='<%$Resources:OrdersResources, Price %>'
						ItemStyle-CssClass="sfItmPriceCol" FooterStyle-CssClass="sfItmPriceCol" HeaderStyle-CssClass="sfItmPriceCol">
						<ItemTemplate>
							<asp:Label ID="newPriceLabel" runat="server" Text='<%# EcommerceControlExtensions.ToCurrencyString((decimal)Eval("DisplayTotal")) %>'
								CssClass="sfTxtLbl" />
						</ItemTemplate>
					</telerik:GridTemplateColumn>
				</Columns>
			</MasterTableView>
		</telerik:RadGrid>
		<asp:Panel ID="shoppingCartGridFooter" runat="server" CssClass="sfShoppingCartGridFooter sfClearfix">
			<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="outerCouponCodeUpdatePanel">
				<ContentTemplate>
					<div class="sfShoppingCartCouponEntryField">
						<orders:couponcodeentryview id="couponCodeEntryView" runat="server" ischangemode="False" />
					</div>
				</ContentTemplate>
			</asp:UpdatePanel>
			<asp:UpdatePanel ID="UpdatePanel1" runat="server">
				<ContentTemplate>
					<div class="sfShoppingCartTotal">
						<table class="sfShoppingCartDiscountList">
							<tbody>
								<tr runat="server" id="beforeDiscountRow">
									<th>
										<asp:Label ID="Label1" runat="server" Text="<%$ Resources:OrdersResources, BeforeDiscounts %>"
											CssClass="sfTxtLbl" />:
									</th>
									<td>
										<asp:Label ID="totalPrice" runat="server" Text="" CssClass="sfTxtLbl" />
									</td>
								</tr>
								<orders:discountlist runat="server" id="discountRows" />
							</tbody>
						</table>
					</div>
					<div class="sfTotalRowWrp">
						<asp:Label ID="productTotalQuantity" runat="server" />
						<asp:Label ID="subTotalLabel" runat="server" Text='<%$Resources:OrdersResources, Subtotal %>'
							CssClass="sfTxtLbl" />:&nbsp; <strong class="sfPriceTotal">
								<asp:Label ID="afterDiscountPrice" runat="server" Text="" CssClass="sfTxtLbl" /></strong>
					</div>
				</ContentTemplate>
			</asp:UpdatePanel>
			<asp:LinkButton ID="updateButton" Text="<%$Resources:OrdersResources, Update %>"
				runat="server" CssClass="sfshoppingCartUpdateLnk" />
		</asp:Panel>
		<asp:Panel ID="noProductsInShoppingCartPanel" runat="server" Visible="false" CssClass="sfNoProductsInCartMsg">
			<asp:Literal ID="Literal3" runat="server" Text='<%$Resources:OrdersResources, NoProductsInShoppingCart %>' />
		</asp:Panel>
		<div class="sfshoppingCartBtnsWrp sfClearfix">
			<asp:HyperLink ID="continueShoppingLink" runat="server" Text='<%$Resources:OrdersResources, ContinueShopping %>'
				NavigateUrl="#" CssClass="sfBackBtn" />
			<div id="checkoutButtonDiv" runat="server">
				<asp:Button ID="checkoutButton" runat="server" Text='<%$Resources:OrdersResources, Checkout %>'
					CssClass="sfCheckoutBtn" />
			</div>
		</div>
	</asp:PlaceHolder>
</div>

ShoppingCart.ascx.cs

	public partial class ShoppingCart : System.Web.UI.UserControl
	{
		protected void shoppingCartGrid_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
		{
			if (e.Item.ItemType == Telerik.Web.UI.GridItemType.Item || e.Item.ItemType == Telerik.Web.UI.GridItemType.AlternatingItem)
			{
				var item = e.Item.DataItem as CartDetail;
				if (item == null) return;

				// Get the actual product
				var manager = CatalogManager.GetManager();
				var product = manager.GetProduct(item.ProductId);
				if (product == null) return;

				// only memberships have min/max
				var type = product.GetType().Name;
				if (!type.Contains("generalproduct")) return;

				var validation = e.Item.FindControl("quantityValidator") as RangeValidator;
				if (validation == null) return;

				validation.MinimumValue = product.GetValue("Minimum").ToString();
				validation.MaximumValue = product.GetValue("Maximum").ToString();
			}
		}
	}