IDocumentFormatProvider provider Import is not working for docx file

[Sreevalli]

Hi,

when i'm trying to import Docx file (Docx File) its giving me error as "Value was either too large or too small for an Int32".

_document = new RadDocument();
byte[] doc = Convert.FromBase64String(MergeCollection[_attachmentCount].Body);
IDocumentFormatProvider provider = new DocxFormatProvider();
MemoryStream stream = new MemoryStream(doc);
_document = provider.Import(stream);

Please kindly help me in this.