Error message: Value of type 'System.IO.FileStream' cannot be converted to '1-dimensional array of Byte'

Question

I am getting an error:

Value of type 'System.IO.FileStream' cannot be converted to '1-dimensional array of Byte'.

My code block is:

Dim FileToSign As System.IO.FileStream = GetTestPdfFile(fileName)
Dim SignedFileInfo As New secure.echosign.com.FileInfo()
SignedFileInfo.fileName = fileName
SignedFileInfo.mimeType = Nothing
SignedFileInfo.file = FileToSign

SignedFileInfo.file is a Byte type.
How can I convert File to byte?

`File` is a vb.net keyword. Dont use keywords as variable names — γηράσκω δ' αεί πολλά διδασκόμε, Aug 19 '14 at 20:01
FileInfo is a Type in .NET as well. you should be sure to post *actual* code so we dont chase ghosts. For instance, is it `fileinfo` or `fileInfos1`? — Ňɏssa Pøngjǣrdenlarp, Aug 19 '14 at 20:03
@Plutonix that was a typo on my part. I modified my code to read "SignedFileInfo" — user3929962, Aug 19 '14 at 20:08
from [this post](http://stackoverflow.com/q/10500167/1070452) it looks like FILE is supposed to be a byte array nor a filestream. — Ňɏssa Pøngjǣrdenlarp, Aug 19 '14 at 20:15
[FileStream.Read Method](http://msdn.microsoft.com/en-us/library/system.io.filestream.read(v=vs.110).aspx) — γηράσκω δ' αεί πολλά διδασκόμε, Aug 19 '14 at 20:26
@valter put that in the answer section and I will mark it accepted — user3929962, Aug 19 '14 at 20:34
It is not realy an answer. Just a little help. Thanks anyway. — γηράσκω δ' αεί πολλά διδασκόμε, Aug 19 '14 at 20:37

score 1 · Accepted Answer · answered Aug 20 '14 at 00:01

If fileName is the name of your PDF file, and GetTestPdfFile isn't doing anything to the PDF file, you can instead use File.ReadAllBytes to get the file contents as a byte array:

SignedFileInfo.file = System.IO.File.ReadAllBytes(fileName)

If GetTestPdfFile is doing something other than returning a FileStream then you will need to use the FileStream.Read method to read the contents into a byte array:

Dim pdfLength As Integer = CInt(FileToSign.Length - 1)
Dim pdfBytes(pdfLength) As Byte
If FileToSign.Read(pdfBytes, 0, pdfLength) <> pdfLength Then
    ' Hmm, something's not right
End If
SignedFileInfo.file = pdfBytes

All code untested, but should be pretty close!

Error message: Value of type 'System.IO.FileStream' cannot be converted to '1-dimensional array of Byte'

1 Answers1