SharePoint 2010 Property Bag - Read / Write data to Property Bag

Property Bag = hash table of Key-Value pairs

Read / Write data to Property Bag

SPSecurity.RunWithElevatedPrivileges(delegate()

        {

        try

        {

            using (SPSite RootSite = new SPSite(URL))

            {

                using (SPWeb SiteCollection = RootSite.OpenWeb())

                {                   

                    try

                    {

                        SiteCollection.AllowUnsafeUpdates = true;

                       // Get connection string from Property bag

                        if (SiteCollection.AllProperties.ContainsKey("ConnectionString"))

                        {

                            ConnectionString = SiteCollection.AllProperties["ConnectionString"].ToString();

                        }                       

                        // Set siteID in the Property bag

                        SiteCollection.Properties["siteID"] = siteID;

                        SiteCollection.Properties.Update();

                        SiteCollection.AllowUnsafeUpdates = false;                       

                    }

                    catch (Exception ex)

                    {

                      //Handle Exception 

                    }          

                }

            }

        }

        catch(Exception ex)       

        {           

        }

        }); 

http://pbs2010.codeplex.com/