Parameters
- reader
- A System.Xml.XmlReader object indicates the Xml reader.
- context
- An GrapeCity.Spreadsheet.IO.OpenXml.ImportContext object indicates the import context data.
- key
- A System.Guid value indicates the GUID identifier of the extension.
Return Value
The IExtension<T> object that indicates by the specified GrapeCity.Spreadsheet.IO.OpenXml.Extension data.