LSB

From: Milosz - [playseven.com] (mw_at_playseven.com)
Date: 02/20/04 

Date: Fri, 20 Feb 2004 14:48:38 +0100

Do you mean LSB opp. MSB ?
If yes, i still don't know what to do ..

regards
Milosz

"Milosz - [playseven.com]" <mw@playseven.com> schrieb im Newsbeitrag
news:%23HpniQ79DHA.1312@TK2MSFTNGP09.phx.gbl...
> I'm sorry. I do not understand.
> IPAdress.Adress is signed becouse it's a simple Int32, and IcmpSendEcho
> wants to have an unsigned int.
>
> What is an LSB and how to uncheck it?
>
> Do you mean i have to pass the long value 'as it is' to IcmpSendEcho
> Function ?
>
> regards
>
> Milosz
>
>
>
>
>
> "Chris Tacke, eMVP" <ctacke[at]Open_NET_CF[dot]org> schrieb im Newsbeitrag
> news:eq4%23AV69DHA.2308@TK2MSFTNGP11.phx.gbl...
> > With unsigned numbers there is no such thing as negative. It simply
means
> > that your LSB is on. If you use unchecked you can stuff a "negative"
> signed
> > number into an unsigned.
> >
> > -Chris
> >
> > "Milosz - [playseven.com]" <mw@playseven.com> wrote in message
> > news:u$uS6N69DHA.2804@TK2MSFTNGP09.phx.gbl...
> > > Hello,
> > >
> > > I perform a ping using the IcmpSendEcho Function from iphlpapi:
> > > <DllImport("iphlpapi")> _
> > >
> > > Private Shared Function IcmpSendEcho(ByVal IcmpHandle As IntPtr, ByVal
> > > DestinationAddress As System.UInt32, ByVal RequestData() As Byte,
ByVal
> > > RequestSize As Integer, ByVal RequestOptions As IntPtr, ByVal
> > ReplyBuffer()
> > > As Byte, ByVal ReplySize As Int32, ByVal Timeout As Int32) As
> > System.UInt32
> > >
> > >
> > > This Function requires a Destination Adress as an unsigned Int32. I
get
> it
> > > from the IPAddress.Address Object.
> > >
> > > Public Structure PingOptions
> > > Dim IPAdress As IPAddress
> > > Dim TimeOUT As Integer
> > > End Structure
> > > dim opt as PingOptions
> > >
> > > opt.IPAdress = IPAddress.Parse("192.168.1.128") ' Adresses bigger then
> > > A.B.C.127, have a negative adress value !!!
> > >
> > > ipaddr = System.UInt32.Parse(opt.IPAdress.Address) ' and couse
exception
> > > here
> > >
> > > Dim ret As System.UInt32
> > >
> > > 'but i need an unsigned int here in the second parameter
> > > ret = IcmpSendEcho(h, opt.ipaddr, RequestData,
CInt(RequestData.Length),
> > > IntPtr.Zero, reply._Data, reply._Data.Length, opt.TimeOUT)
> > >
> > > The Problem is that for IPAdresses, where the last Byte is bigger then
> > 127.
> > > the generated Long Value for Adress is negative and the Parse Method
to
> > the
> > > uint32 couses an exception.
> > >
> > > Or should i declare the DestinationAdress as Long in the IcmpSendEcho
> and
> > > put in IPAdress.Address value directly.
> > > My assumption is that the Address value is created in the correct
> > bitformat
> > > but becouse the CF is declaring it as a long it is interpreted
negative.
> > >
> > > Or how else to get the correct Long Value from IPAdress.Address ?
> > >
> > > THX in advance
> > >
> > >
> > > --
> > > -> Milosz Weckowski
> > > www.playseven.com
> > >
> > > mailto:mw@playseven.com
> > > ICQ Number: 84867613
> > >
> > > Get the enhanced Progressbar and a fine Colorpicker for the Compact
> > Framwork
> > > for free:
> > > http://www.playseven.com/11620/p7_Controls.html
> > >
> > >
> >
> >
>
>