SPField.PIAttribute property

Gets or sets the attribute in the document processing instruction (specified by the PITarget property) that is used as the column value for property promotion and demotion in XML documents.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

public string PIAttribute { get; set; }

Property value

Type: System.String
A string that contains the attribute that is used as the column value.