Type byte has no constructors

Question

Why I am I getting the "type byte has no constructors" error here?

            Dim stream As System.IO.MemoryStream = New MemoryStream()

            bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Jpeg)
            stream.Position = 0
            Dim image As Byte() = New Byte(stream.Length)

 

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Brett The Jet

Answer 1

Brett,

I updated a sample on our website and now I see today 3 questions where it can be used.

First your actual question. It is as it is, the Byte has now constructor in its structure.

A Constructor is simply in VB a Method which looks like Sub New
                                                                                       End Sub

It runs when the object is constructed. 

Be aware you can construct a new array of bytes, but that is not a new byte but an array which holds items from the type Byte.

For that are many possibilities. However almost impossible to do by hand with an image, you need for that to stream the bytes of an image. 

However for what you are doing I've updated the sample today in a more todays way.

http://www.vb-tips.com/image2bytearray.aspx

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Success
Cor

Answer 2

The compiler is not reading 'New Byte(stream.Length)' as a declaration of an array with a size, but as a call to the Byte constructor with an argument, hence the message.  The correct form for what you are trying to do is

  Dim image(Stream.Length) As Byte

The 'New Byte' form is used when the array elements are provided. For instance:

  Dim image As Byte() = New Byte() {1, 2, 3, 4, 5}

Answer 3

Brett,

Yesterday eve I realized me that I gave you a wrong reply. 

I've changed it now.

 

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Success
Cor