MemoryStream.WriteByte()

[John A Grandy]

Dim ms As MemoryStream = New MemoryStream(10 0)

ms.WriteByte("= ")

triggers invalid cast error ...

but

ms.WriteByte(As c("="c))

does not ...

but isn't Asc() producing a 2-byte representation of a Char

[Tom Shelton]

Re: MemoryStream.Wr iteByte()

On Tue, 24 Aug 2004 21:49:59 -0700, John A Grandy wrote:
[color=blue]
> Dim ms As MemoryStream = New MemoryStream(10 0)
>
> ms.WriteByte("= ")
>
> triggers invalid cast error ...
>
> but
>
> ms.WriteByte(As c("="c))
>
> does not ...
>
> but isn't Asc() producing a 2-byte representation of a Char[/color]

but the value is less then 256, so can be cast into a byte... This might
complain though with Option Strict On, since it would be a narrowing
conversion (you do have option strict on, right? :)

--
Tom Shelton [MVP]

[Jay B. Harlow [MVP - Outlook]]

Re: MemoryStream.Wr iteByte()

John,
In addition to Tom's comment.

Asc returns the ANSI value of the character, ANSI is defined as a 8-bit
value.

AscW returns the Unicode value of the character, Unicode is defined as an
16-bit code point (in .NET).

I would create a BinaryWriter or a StreamWriter over the MemoryStream with
the proper encoding set, and call BinaryWriter.Wr ite(Char) or
StreamWriter.Wr ite(Char).

Hope this helps
Jay

"John A Grandy" <johnagrandy-at-yahoo-dot-com> wrote in message
news:eHXY97liEH A.1644@tk2msftn gp13.phx.gbl...[color=blue]
> Dim ms As MemoryStream = New MemoryStream(10 0)
>
> ms.WriteByte("= ")
>
> triggers invalid cast error ...
>
> but
>
> ms.WriteByte(As c("="c))
>
> does not ...
>
> but isn't Asc() producing a 2-byte representation of a Char
>
>[/color]