AbleCommerce Shopping Cart Software

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<div class="widget simpleCategoryListWidget">
    <asp:Panel ID="MainPanel" runat="server" CssClass="innerSection">
        <asp:Panel ID="HeaderPanel" runat="server" CssClass="header">
	       
<h2><asp:Localize ID="HeaderTextLabel" runat="server" Text="Categories"></asp:Localize></h2>
        </asp:Panel>
	    <asp:Panel ID="ContentPanel" runat="server" CssClass="content">
<asp:TreeView ID="CategoryTree" runat="server" EnableViewState="true" ExpandDepth="0" NodeWrap="True">
    </asp:TreeView>                 
        </asp:Panel>
    </asp:Panel>
</div>

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public partial class SimpleCategoryListEx : System.Web.UI.UserControl, ISidebarControl

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<%@ Implements Interface="CommerceBuilder.UI.ISidebarControl"  %>

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<%-- This file is a generated file. Do not modify. See customization guide for details. --%>
<%@ Master Language="C#" AutoEventWireup="true" MasterPageFile="~/Layouts/Base.Master" Inherits="AbleCommerce.Layouts.Base" %>
<%--
<layout>
<description>Layout having a main column and left and right side bars.</description>
</layout>
--%>
<%@ Register src="~/ConLib/StoreHeader.ascx" tagname="StoreHeader" tagprefix="uc" %>
<%@ Register src="~/ConLib/MiniBasket.ascx" tagname="MiniBasket" tagprefix="uc" %>
<%@ Register src="~/ConLib/CategoryListEx.ascx" tagname="CategoryListEx" tagprefix="uc" %>
<%@ Register src="~/ConLib/StoreFooter.ascx" tagname="StoreFooter" tagprefix="uc" %>
<asp:Content ID="Content1" ContentPlaceHolderID="NestedMaster" runat="server">
    <div id="header">
        <div class="zone">
            <div class="section">
                <div class="content">
                    <asp:ContentPlaceHolder ID="PageHeader" runat="server">
                        <uc:StoreHeader ID="StoreHeader_H" runat="server" />
                    </asp:ContentPlaceHolder>
                </div>
            </div>
        </div>
    </div>
<div id="contentContainer">
        <div id="leftColumn">
        <div class="zone">
            <asp:ContentPlaceHolder ID="LeftSidebar" runat="server">
                <uc:CategoryListEx ID="CategoryListEx" runat="server" />
            </asp:ContentPlaceHolder>
        </div>
    </div>
    <div id="mainColumn" class="threeColumnLayout">
        <div class="zone">
            <asp:ContentPlaceHolder ID="PageContent" runat="server">
                [page body]
            </asp:ContentPlaceHolder>
        </div>
    </div>
    <div id="rightColumn">
        <div class="zone">
            <asp:ContentPlaceHolder ID="RightSidebar" runat="server">
                <uc:MiniBasket ID="MiniBasket_Right" runat="server" ShowAlternateControl="True" AlternateControl="WhatsNewDialog.ascx" />
            </asp:ContentPlaceHolder>
        </div>
    </div>
    </div>
<div id="footer">
    <div class="zone">
        <div class="section">
            <div class="content">
                <asp:ContentPlaceHolder ID="PageFooter" runat="server">
                    <uc:StoreFooter ID="StoreFooter_F" runat="server" />
                </asp:ContentPlaceHolder>
            </div>
        </div>
    </div>
</div>
</asp:Content>

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<%@ Control Language="C#" AutoEventWireup="true" CodeFile="categoryextended.ascx.cs" Inherits="AbleCommerce.ConLib.CustomHTML" %>
<%--
<conlib>
<summary>This control helps you place custom HTML in sidebar.</summary>
<param name="Caption" default="Sample Header Text">Caption / Title of the control.</param>
<param name="WebPageId" default="-1">The id of the web page to load custom HTML in sidebar panel.</param>
</conlib>
--%>

<script runat="server">



    
    int _CategoryId;
    protected void Page_Load(object sender, EventArgs e)
    {
        _CategoryId = AbleCommerce.Code.PageHelper.GetCategoryId();
        if (!Page.IsPostBack)
            PopulateTree();
        ExpandSelectedPath();
    }

    private void PopulateTree() 
    {
        CategoryTree.Nodes.Clear();
        IList<Category> children = CategoryDataSource.LoadForParent(0, true);
        foreach (Category child in children)
        {
            TreeNode newNode = new TreeNode();
            newNode.Text = child.Name;
            newNode.Value = child.Id.ToString();
            newNode.NavigateUrl = child.NavigateUrl;
            if (CategoryDataSource.CountForParent(child.Id) > 0)
                PopulateTreeNode(newNode, child.Id);
            CategoryTree.Nodes.Add(newNode);
        }
        CategoryTree.DataBind();
    }
    private void PopulateTreeNode(TreeNode parentNode,int categoryId)
    {
        IList<Category> children = CategoryDataSource.LoadForParent(categoryId, true);
        foreach (Category child in children)
        {
            TreeNode newNode = new TreeNode();
            newNode.Text = child.Name;
            newNode.Value = child.Id.ToString();
            if (CategoryDataSource.CountForParent(child.Id) > 1)
                PopulateTreeNode(newNode, child.Id);
            newNode.NavigateUrl = child.NavigateUrl;
            parentNode.ChildNodes.Add(newNode);
        }
    }

    private void ExpandSelectedPath()
    {
        IList<CatalogPathNode> path = CatalogDataSource.GetPath(_CategoryId, true);
        StringBuilder valuePath = new StringBuilder();
        foreach (CatalogPathNode pathNode in path)
        {
            if (pathNode.CatalogNodeId == 0)
                continue;
            if (valuePath.Length > 0) valuePath.Append(CategoryTree.PathSeparator);
            valuePath.Append(pathNode.CatalogNodeId);
            TreeNode treeNode = CategoryTree.FindNode(valuePath.ToString());
            treeNode.Selected = true;
            treeNode.Expand();
        }
    }
    
</script>






<div class="widget customHtml">
    <div class="innerSection">
 	  <div class="header">
 	    <h2><asp:Localize ID="CaptionLabel" runat="server" Text="Categories"></asp:Localize></h2>
 	  </div>
 	  <div class="content">
	    <asp:PlaceHolder ID="CustomHTMLPanel" runat="server">  
             


<asp:TreeView ID="CategoryTree" runat="server" EnableViewState="true" ExpandDepth="0" NodeWrap="True"  ImageSet="simple" showlines="false" >
</asp:TreeView>  




	    </asp:PlaceHolder>
	  </div>
    </div>
</div> 

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namespace AbleCommerce.ConLib
{
    using System;
    using CommerceBuilder.UI;
    using System.ComponentModel;
    using System.Web.UI.WebControls.WebParts;
    using CommerceBuilder.Catalog;
    using System.Web.UI;

    public partial class CustomHTML : System.Web.UI.UserControl, ISidebarControl
    {
        private int _WebPageId = -1;
        private string _Caption;
        private Webpage _Webpage;

        [Personalizable(), WebBrowsable()]
        [Browsable(true), DefaultValue("Sample Header Text")]
        [Description("The caption / title of the control")]
        public string Caption
        {
            get { return _Caption; }
            set { _Caption = value; }
        }

        [Personalizable(), WebBrowsable()]
        [Browsable(true), DefaultValue(-1)]
        [Description("The id of the web page to load custom HTML in sidebar panel.")]
        public int WebPageId
        {
            get { return _WebPageId; }
            set { _WebPageId = value; }
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(this.Caption)) CaptionLabel.Text = this.Caption;
            if (_WebPageId > 0) _Webpage = WebpageDataSource.Load(_WebPageId);
            if (_Webpage != null && !string.IsNullOrEmpty(_Webpage.Description))
            {
                CustomHTMLPanel.Controls.Clear();
                CustomHTMLPanel.Controls.Add(new LiteralControl(_Webpage.Description));
            }
        }
    }
}

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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

Line 64:             valuePath.Append(pathNode.CatalogNodeId);
Line 65:             TreeNode treeNode = CategoryTree.FindNode(valuePath.ToString());
Line 66:             treeNode.Selected = true;
Line 67:             treeNode.Expand();
Line 68:         }


Source File: c:\sites\ACG11\ConLib\categoryextended.ascx    Line: 66

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   ASP.conlib_categoryextended_ascx.ExpandSelectedPath() in c:\sites\ACG11\ConLib\categoryextended.ascx:66
   ASP.conlib_categoryextended_ascx.Page_Load(Object sender, EventArgs e) in c:\sites\ACG11\ConLib\categoryextended.ascx:21
   System.Web.UI.Control.LoadRecursive() +70
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Control.LoadRecursive() +189
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3177

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treeNode.Selected = true;
treeNode.Expand();

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if (treeNode != null)
                {
                    treeNode.Selected = true;
                    treeNode.Expand();
                }

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if (CategoryDataSource.CountForParent(child.Id) > 1)