Need to Convert a Hex string to a Hex number

[Dan Fergus]

Okay, here is the story...

strTemp = "95CD4F8A"
Dim lTest2 As Int64 = HexToLong(strTemp) ' lTest2 = 2513260426

I have a hex string, strTemp that needs to be assigned as a _hex value_ to
i32Test. I cannot assign it directly because it overflows the Int32
variable. But if I assign it to the Int32 variable as a hex value the
assignment goes okay and i32Test is then equal to -1781706870...

Dim i32Test As Int32 = &H95CD4F8A

The variable strTemp changes with each call to Guid.NewGuid() so I cannot
hard code the hex value in the assignment. How do I convert the string
"95CD4F8A" to an Int32 variable?

Maybe I've been working on this too much today and am overlooking the
obvious. And I need a break from this project which I plan on taking as
soon as I send this. I have other projects to work on and newsgroups to
catch up on!

Dan

[Dan Fergus]

Thanks!, that was the one I was looking for.

In VB6 when I wanted to convert a hex number I had written a routine that
walked the string doing something crazy like (16 ^ i) * chrDigit to convert
it to a number. Now ToInt32 takes care of it for me. Nice.

strTemp = "DAC85243"
Dim i32Test As Int32 = System.Convert.ToInt32(strTemp,16)

i32Test = -624405949

Dan

"Michael (michka) Kaplan" <former_mvp@spamfree.trigeminal.nospam.com> wrote
in message news:3b8487ee$1@news.devx.com...
> System.Convert.ToInt32 has a signature that takes a string and a "base"
as
> params. Just use this conversion and a base of 16.
>
> --
> MichKa
>
> the only book on internationalization in VB at
> http://www.i18nWithVB.com/
>
> "Dan Fergus" <dan@vbforest.com> wrote in message
> news:3b8461a9$1@news.devx.com...
> > Okay, here is the story...
> >
> > strTemp = "95CD4F8A"
> > Dim lTest2 As Int64 = HexToLong(strTemp) ' lTest2 = 2513260426
> >
> > I have a hex string, strTemp that needs to be assigned as a _hex value_
to
> > i32Test. I cannot assign it directly because it overflows the Int32
> > variable. But if I assign it to the Int32 variable as a hex value the
> > assignment goes okay and i32Test is then equal to -1781706870...
> >
> > Dim i32Test As Int32 = &H95CD4F8A
> >
> > The variable strTemp changes with each call to Guid.NewGuid() so I
cannot
> > hard code the hex value in the assignment. How do I convert the string
> > "95CD4F8A" to an Int32 variable?
> >
> > Maybe I've been working on this too much today and am overlooking the
> > obvious. And I need a break from this project which I plan on taking as
> > soon as I send this. I have other projects to work on and newsgroups to
> > catch up on!
> >
> > Dan
> >
> >
> >
>
>

[Phil Weber]

> In VB6 when I wanted to convert a hex number I had
> written a routine that walked the string doing something
> crazy like (16 ^ i) * chrDigit to convert it to a number.

Dan: Why not simply:

Value = Val("&H" & strHex)

;-)
---
Phil Weber

[Dan Fergus]

Well ....

When I tried --->> Value = Val(strHex)

and it just coverts the first chahracter. Never tried putting the "&" in
front of it first. Sometimes I just make things too hard :-)

Dan

"Phil Weber" <pweber@devx.com> wrote in message
news:3b85299f$1@news.devx.com...
> > In VB6 when I wanted to convert a hex number I had
> > written a routine that walked the string doing something
> > crazy like (16 ^ i) * chrDigit to convert it to a number.
>
> Dan: Why not simply:
>
> Value = Val("&H" & strHex)
>
> ;-)
> ---
> Phil Weber
>
>