Initializing Byte array

[Denis C]

Hi,

Newbie here wondering how to initialize a byte array.
I'm working on the compact framework, and I keep getting
an error because the byte array is null.

Here is the code:

Dim ptr As IntPtr = DBAccessFuncDec l.GetLongVal()
Dim sval As String
Dim lval As Long

Dim size As Integer = 30 + 16

Dim bData As Byte()

***Marshal.Copy (ptr, bData, 0, size)*** HERE IS THE ERROR

sval = System.Text.ASC IIEncoding.ASCI I.GetString
(bData, 0, 30)
lval = BitConverter.To Int64(bData, 31)

Console.WriteLi ne(lval)

I want to put:

Dim bData As Byte() = New Byte(size)

but no luck.

Thanks,

Denis

[Mattias Sjögren]

Re: Initializing Byte array

Denis,
[color=blue]
>Dim bData As Byte() = New Byte(size)[/color]

Dim bData(size-1) As Byte

or

Dim bData As New Byte(size-1) {}



Mattias

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[Cor]

Re: Initializing Byte array

Hi Mattias,

Are you sure of this?
[color=blue][color=green]
> >Dim bData As Byte() = New Byte(size)[/color]
> Dim bData(size-1) As Byte
> or
> Dim bData As New Byte(size-1) {}[/color]

The first says
A bytearea of x bytes (so x * 0)
I think that with that is nothing wrong

The second one says something as
An area of new empty objects byte with a lenght of x

I don't think that is good code

What do I see wrong?

Cor

[Herfried K. Wagner [MVP]]

Re: Initializing Byte array

* "Cor" <non@non.com> scripsit:[color=blue]
> Are you sure of this?
>[color=green][color=darkred]
>>> Dim bData As Byte() = New Byte(size)[/color]
>> Dim bData(size-1) As Byte
>> or
>> Dim bData As New Byte(size-1) {}[/color]
>
> The first says
> A bytearea of x bytes (so x * 0)
> I think that with that is nothing wrong
>
> The second one says something as
> An area of new empty objects byte with a lenght of x[/color]

Hmmm... The latter doesn't work at all...

--
Herfried K. Wagner [MVP]
<http://www.mvps.org/dotnet>

[Mattias Sjögren]

Re: Initializing Byte array

[color=blue]
>Dim bData As New Byte(size-1) {}[/color]

Oops, I meant

Dim bData() As Byte = New Byte(size-1) {}



Mattias

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Mattias Sjögren [MVP] mattias @ mvps.org

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