I have done quite a bit of programmatic manipulation on the SharePoint quick launch bar in C# so I decided to write this article that logs some of the tips and tricks I have used. Here you will find how to add and delete items, update links and text in parent and children nodes, add headings (items without links), add links that open in new window, and handle audience targeting for specific quick launch links.

When we write code to handle the ItemUpdating or ItemUpdated list item events, we may sometimes need to take different actions based on whether the event was triggered by a regular item update or by a version restore operation.

Say you have a SharePoint workflow which runs whenever a list item changes (ItemUpdated). You also have some custom code to do some manipulation on the same list item at the end of which you need to perform an item update using one of the SPListItem update methods: Update(), Systemupdate() and UpdateOverwriteVersion(). You will quickly notice that this update will trigger another instance of the workflow for this item once the current workflow terminates. You have just hit an infinite loop.

When dealing with event receivers in SharePoint custom code, we use the BeforeProperties and AfterProperties to get a hash table of properties consisting of string/value pairs that correspond to fields in the SPItem object before and after the event occurred respectively.