I followed the instructions provided in Module 1: Getting Started Building Web Parts in SharePoint 2010 webcast. This webcast teaches the following:

• Create standard ASP.NET Web Parts for SharePoint 2010.
• Create Visual Web Parts for SharePoint 2010.
• Use SharePoint controls and data in Web Parts.

Quick Resource Box

• Module 1: Getting Started Building Web Parts in SharePoint 2010
• Setting Up the Development Environment for SharePoint Foundation on Windows 7

Step-by-step Walkthrough

• Open Visual Studio 2010 in elevated mode.
• Click “New Project” on Start Page.
• Under “Installed Templates”,  Expand Sharepoint node and choose 2010.
• Choose “Visual Web Part” project template, name it MyVisualWebPartProject or any other to your desire.
• Click OK. Specify your computer name where Sharepoint installed (for example, http://alikl14/) and click Finish button.
• Drag treeview control onto VisualWebPart1UserControl.ascx at the end of the file, it should look similar to this:

<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14..." %
<%@ Register Tagprefix="SharePoint..." %>

...

<%@ Control Language="C#" AutoEventWireup="true..." %>
<asp:TreeView ID="siteStructure" runat="server">
</asp:TreeView>

• Open the VisualWebPart1UserControl.ascx.cs file
• Add the following using statement at the top:

using Microsoft.SharePoint;

• Add the following code to the Page_load event handler:

            SPWeb thisWeb = null;
            try
            {
                TreeNode node;
                thisWeb = SPContext.Current.Web;
                node = new TreeNode(thisWeb.Title, null, null, thisWeb.Url, "_self");
                siteStructure.Nodes.Add(node);
                TreeNode parentNode = node;
                foreach (SPList list in thisWeb.Lists)
                {
                    if (!list.Hidden)
                    {
                        node = new TreeNode(list.Title, null, null, list.DefaultViewUrl, "_self");
                        parentNode.ChildNodes.Add(node);
                    }
                }
                foreach (SPWeb childWeb in thisWeb.Webs)
                {
                    addWebs(childWeb, parentNode);
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                thisWeb.Dispose();
            }

• Add also the following function to the file:

        private void addWebs(SPWeb web, TreeNode parentNode)
        {

            TreeNode node;
            node = new TreeNode(web.Title, null, null, web.Url, "_self");
            parentNode.ChildNodes.Add(node);
            parentNode = node;
            foreach (SPList list in web.Lists)
            {
                if (!list.Hidden)
                {
                    node = new TreeNode(list.Title, null, null, list.DefaultViewUrl, "_self");
                    parentNode.ChildNodes.Add(node);
                }
            }
            foreach (SPWeb childWeb in web.Webs)
            {
                addWebs(childWeb, parentNode);
            }

• Build the project
• In the solution explorer right click MyWebPartProject and choose “Deploy”.
• Navigate to your Sharepoint using browser, in my case http://alikl14/
• Switch to “Edit” mode – click on notepad like icon on up right corner.
• Click on “Insert” under “Editing Tools”.
• Click on “Web part”.
• Click on “Custom” on the left.
• Choose VisualWebPart1 and drag it on the page.
• Click “Save” [diskette icon].
• You should see the tree view control displaying your Sharepoint content.

Related Books

• Professional SharePoint 2010 Development