SharePoint features 2010

SharePoint Branding Solution for 2010

Microsoft version: http://msdn.microsoft.com/en-us/library/gg447066.aspx

To uninstall a feature go to Microsfot SharePoint 2010 Products -> SharePoint 2010 Management Shell
                     uninstall-SPFeature   -force
exact feature name can be found in 14 hive-->templates --> features to test the feature in web application..

creating webapp- got error- create database cannot be performed, check config db and content db creation permissions

using System;
using System.Runtime.InteropServices;
using System.Security.Permissions;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Security;
namespace Branding.Features.Feature1
{
    ///

    /// This class handles events raised during feature activation, deactivation, installation, uninstallation, and upgrade.
    ///

    ///
    /// The GUID attached to this class may be used during packaging and should not be modified.
    ///
    [Guid("18aee99d-0efa-4fe3-91c1-6fd688e7f05c")]
    public class Feature1EventReceiver : SPFeatureReceiver
    {
        public override void FeatureActivated(
                         SPFeatureReceiverProperties properties)
        {
            SPSite siteCollection = properties.Feature.Parent as SPSite;
            if (siteCollection != null)
            {
                SPWeb topLevelSite = siteCollection.RootWeb;
                // Calculate relative path to site from Web Application root.
                string WebAppRelativePath = topLevelSite.ServerRelativeUrl;
                if (!WebAppRelativePath.EndsWith("/"))
                {
                    WebAppRelativePath += "/";
                }
                // Enumerate through each site and apply branding.
                foreach (SPWeb site in siteCollection.AllWebs)
                {
                     site.MasterUrl = WebAppRelativePath +
                                         "_catalogs/masterpage/v4_508.master";
                     site.CustomMasterUrl = WebAppRelativePath +
                                       "_catalogs/masterpage/v4_508.master";
                                      site.UIVersion = 4;
                    site.Update();
                }
            }
        }
public override void FeatureDeactivating(
                       SPFeatureReceiverProperties properties) {
  SPSite siteCollection = properties.Feature.Parent as SPSite;
  if (siteCollection != null) {
    SPWeb topLevelSite = siteCollection.RootWeb;
    // Calculate relative path of site from Web Application root.
    string WebAppRelativePath = topLevelSite.ServerRelativeUrl;
    if (!WebAppRelativePath.EndsWith("/")) {
      WebAppRelativePath += "/";

}    // Enumerate through each site and remove custom branding.
    foreach (SPWeb site in siteCollection.AllWebs) {
      site.MasterUrl = WebAppRelativePath +
                       "_catalogs/masterpage/v4.master";
      site.CustomMasterUrl = WebAppRelativePath +
                             "_catalogs/masterpage/v4.master";
      site.AlternateCssUrl = "";
      site.SiteLogoUrl = "";
      site.Update();
    }
  }
}
    }
}


feature event receiver code: SharePoint Feature Stapling allows a feature to be "stapled" to one or more site collections/webapplications/farm