The columns in the document library, if the document does not have a content type.įor more information about content types, see Content Types. The document's content type, if one is assigned. The columns that apply to a document are specified by the following:
SharePoint Foundation only promotes or demotes document properties that match list columns that apply to the document. The parser then either fills the property bag with values that need to be promoted to the list or extracts from the property bag the values that need to be demoted to the document. If one is, SharePoint Foundation invokes the parser, passing it the document and a property bag object. In each case, SharePoint Foundation determines whether a parser is associated with the file type. The Properties property of an SPFile object is updated programmatically.Ī file is downloaded for the first time after the list schema has changed. The fields of a list item that is associated with a file are modified. SharePoint Foundation initiates property promotion or demotion when the following events occur:Ī file is uploaded to a document library. Thus both the document and its associated list item remain in sync. When the values of columns or fields in a list item change, the changes can be automatically written back to the document that is associated with the list item. When the values of document properties change, the changes can be automatically written back to the list. Microsoft SharePoint Foundation can work together with a document parser to make the process of promoting and demoting properties automatic. Values are read from list columns and written to document properties. Property demotion is the same process in reverse. Property promotion refers to the process of extracting values from properties of a document and writing those values to corresponding columns on the list or document library where the document is stored.
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