Adding Items to your Quick Launch or Top Navigation Programmatically!

This was something we were able to start out with to add items to the quick launch.  I further modified it as shown below, and hope this is something that you can use.

using System;

using System.Web.UI;

using System.Linq;

using Microsoft.SharePoint;

using Microsoft.SharePoint.Navigation;

namespace SPQuickLaunchAddItemWebPart.VisualWebPart1

{

    public partial class VisualWebPart1UserControl : UserControl

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            CleanUpQuickLaunch(“My Header”);

            AddQuickLaunchItem(“My Header”, “http://www.google.com/q=stuff”, “My Link Here”, “http://www.google.com”);

            CleanUpTopNavigationBar(“My Header”);

            AddTopNavigationBarItem(“My Header”,“http://www.google.com/q=stuff”, “My Link Here”, “http://www.google.com”);

            AddTopNavigationBarItem(“My Header”,“http://www.google.com/q=stuff”, “My Link Here1″,“http://www.google.com”);

        }

        public static void CleanUpQuickLaunch(string header)

        {

            using (SPSite site = SPContext.Current.Site)

            {

                using (SPWeb web = site.OpenWeb())

                {

                    web.AllowUnsafeUpdates = true;

                    SPNavigationNodeCollection quickLaunch = web.Navigation.QuickLaunch;

                    // try to get quick launch header

                    SPNavigationNode nodeHeader = quickLaunch.Cast<SPNavigationNode>().Where(n => n.Title == header).FirstOrDefault();

                    //if header not found remove it

                    if (nodeHeader != null)

                    {

                        quickLaunch.Delete(nodeHeader);

                    }

                }

            }

        }

        public static void CleanUpTopNavigationBar(string header)

        {

            using (SPSite site = SPContext.Current.Site)

            {

                using (SPWeb web = site.OpenWeb())

                {

                    web.AllowUnsafeUpdates = true;

                    SPNavigationNodeCollection topNavigation = web.Navigation.TopNavigationBar;

                    // try to get quick launch header

                    SPNavigationNode nodeHeader = topNavigation.Cast<SPNavigationNode>().Where(n => n.Title == header).FirstOrDefault();

                    //if header not found remove it

                    if (nodeHeader != null)

                    {

                        topNavigation.Delete(nodeHeader);

                    }

                }

            }

        }

        public static void AddQuickLaunchItem(string header, string headerURL, stringitem, string url)

        {

            using (SPSite site = SPContext.Current.Site)

            {

                using (SPWeb web = site.OpenWeb())

                {

                    web.AllowUnsafeUpdates = true;

                    SPNavigationNodeCollection quickLaunch = web.Navigation.QuickLaunch;

                    // try to get quick launch header

                    SPNavigationNode nodeHeader = quickLaunch.Cast<SPNavigationNode>().Where(n => n.Title == header).FirstOrDefault();

                    //if header not found create it

                    if (nodeHeader == null)

                        nodeHeader = quickLaunch.AddAsFirst(newSPNavigationNode(header, headerURL, true));

                    nodeHeader.Update();

                    //try to get node item under header

                    SPNavigationNode nodeItem = nodeHeader.Children.Cast<SPNavigationNode>().Where(n => n.Title == item).FirstOrDefault();

                    //If item not found under heading then create it

                    if (nodeItem == null)

                        nodeItem = nodeHeader.Children.AddAsLast(newSPNavigationNode(item, url, true));

                    else

                        nodeItem.Url = url;

                    nodeItem.Update();

                    nodeHeader.Update();

                }

            }

        }

        public static void AddTopNavigationBarItem(string header, string headerURL,string item, string url)

        {

            using (SPSite site = SPContext.Current.Site)

            {

                using (SPWeb web = site.OpenWeb())

                {

                    web.AllowUnsafeUpdates = true;

                    SPNavigationNodeCollection topNavBar = web.Navigation.TopNavigationBar;

                    // try to get quick launch header

                    SPNavigationNode nodeHeader = topNavBar.Cast<SPNavigationNode>().Where(n => n.Title == header).FirstOrDefault();

                    //if header not found create it

                    if (nodeHeader == null)

                        nodeHeader = topNavBar.AddAsFirst(new SPNavigationNode(header, headerURL, true));

                    nodeHeader.Update();

                    //try to get node item under header

                    SPNavigationNode nodeItem = nodeHeader.Children.Cast<SPNavigationNode>().Where(n => n.Title == item).FirstOrDefault();

                    //If item not found under heading then create it

                    if (nodeItem == null)

                        nodeItem = nodeHeader.Children.AddAsLast(newSPNavigationNode(item, url, true));

                    else

                        nodeItem.Url = url;

                    nodeItem.Update();

                    nodeHeader.Update();

                }

            }

        }

    }

}