Question

I have the following function (in a WCF)

Public Function GetPDF_Byte() As Byte Implements IService1.GetPDF_Byte
    Dim fs As New FileStream("C:\My.pdf", FileMode.Open, FileAccess.Read)

    Dim ImageData As Byte() = New Byte(fs.Length - 1) {}

    fs.Read(ImageData, 0, System.Convert.ToInt32(fs.Length))

    fs.Close()

    Return ImageData


End Function

Problem is, I’m getting the following error on ‘Return ImageData’:

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

I’ve been playing with it, but can’t seem to figure out what I need to do to ImageData.

Answer 1

Function needs to return byte array:

Public Function GetPDF_Byte() As Byte()

So either the method in the interface and class is defined as Byte and needs to be changed to byte array or it must be indeed byte and you need to return a single byte – which I really doubt as it is image data.