SharePoint Programming

The Code below checks Whether the document item "itemToCheck" belongs to any document set and if yes it returns the document set name.

public bool IsDocumentSetItem(SPListItem itemToCheck)
{

bool documentSetItem = false;

if (itemToCheck.File != null)
{
DocumentSet documentSet;

documentSet = DocumentSet.GetDocumentSet(itemToCheck.File.ParentFolder);

if (null != documentSet)
{
documentSetItem = true;
}
}
return documentSetItem;
}

The code asks the current item to return the containing set. If there is no set, then the item is not part of any document set.