Binary stream '0' does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.

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C#

how to convert the ssrs byte array into an object

My Code:

Byte[] wordOuptput = RequestReviewRptViewer.ServerReport.Render("word", deviceInfo, out mimeType, out encoding, out extension, out streamids, out warnings);

MemoryStream memStream = new MemoryStream(wordOuptput);               
BinaryFormatter binForm = new BinaryFormatter();
memStream.Write(wordOuptput, 0, wordOuptput.Length);
memStream.Seek(0, SeekOrigin.Begin);
Object obj = binForm.Deserialize(memStream);

getting error:
Binary stream '0' does not contain a valid BinaryHeader. Possible causes are invalid stream or object version change between serialization and deserialization.