get IP address by code

[iwdu15]

hi, i tried migrating my VB.net code to get the computers IP address to C++
and it doesnt work, so im wonderign if anyone knows how to do it in
C++.net...thank s
--
-iwdu15

[William DePalo [MVP VC++]]

"iwdu15" <jmmgoalsteraty ahoodotcom> wrote in message
news:6C******** *************** ***********@mic rosoft.com...

hi, i tried migrating my VB.net code to get the computers IP address to
C++
and it doesnt work, so im wonderign if anyone knows how to do it in
C++.net...thank s

What did you do in VB.Net? You should be able to do tha same things with
either Managed C++ (VS2003) or C++/CLI (VS2005).

On the other hand, if your migration was to native C++ under Win32, you will
likely need to make use of a completely different set of services.

If you are thinking to yourself - "Great, Will. That's none too specific to
help me" - then you'd be right. To get good advice you need to explain a
little more about what you want or how what you tried failed.

Regards,
Will

[iwdu15]

my mistake, sorry about that... heres howi tried it in vb:

''Global Var
Dim homeip As IPAddress

''In form load
homeip =
Net.Dns.GetHost ByName(Net.Dns. GetHostName).Ad dressList.GetVa lue(0)

in C++ i tried:

//Global Var
System::Net::IP Address * homeip;

''in formload
homeip =
Net::Dns::GetHo stByName(Net::D ns::GetHostName ())->AddressList->GetValue(0);

it throws this build error

c:\Documents and Settings\User\D esktop\Final_Pr oject\Final
Project\Final\F orm1.h(4029): error C2440: '=' : cannot convert from
'System::Object __gc *' to 'System::Net::I PAddress __gc *'

let me kno if u need anymore info
--
-iwdu15

[Carl Daniel [VC++ MVP]]

iwdu15 wrote:

my mistake, sorry about that... heres howi tried it in vb:

''Global Var
Dim homeip As IPAddress

''In form load
homeip =
Net.Dns.GetHost ByName(Net.Dns. GetHostName).Ad dressList.GetVa lue(0)

in C++ i tried:

//Global Var
System::Net::IP Address * homeip;

''in formload
homeip =
Net::Dns::GetHo stByName(Net::D ns::GetHostName ())->AddressList->GetValue(0);

it throws this build error

c:\Documents and Settings\User\D esktop\Final_Pr oject\Final
Project\Final\F orm1.h(4029): error C2440: '=' : cannot convert from
'System::Object __gc *' to 'System::Net::I PAddress __gc *'

Try this:

homeip = (System::Net::I PAddress
*)Net::Dns::Get HostByName(Net: :Dns::GetHostNa me())->AddressList->GetValue(0);

VB.NET automatically inserts a cast for you, C++ does not.

-cd

[adebaene]

Carl Daniel [VC++ MVP] a écrit :

iwdu15 wrote:

my mistake, sorry about that... heres howi tried it in vb:

''Global Var
Dim homeip As IPAddress

''In form load
homeip =
Net.Dns.GetHost ByName(Net.Dns. GetHostName).Ad dressList.GetVa lue(0)

in C++ i tried:

//Global Var
System::Net::IP Address * homeip;

''in formload
homeip =
Net::Dns::GetHo stByName(Net::D ns::GetHostName ())->AddressList->GetValue(0);

it throws this build error

c:\Documents and Settings\User\D esktop\Final_Pr oject\Final
Project\Final\F orm1.h(4029): error C2440: '=' : cannot convert from
'System::Object __gc *' to 'System::Net::I PAddress __gc *'

Try this:

homeip = (System::Net::I PAddress
*)Net::Dns::Get HostByName(Net: :Dns::GetHostNa me())->AddressList->GetValue(0);

Or better :

homeip=__try_ca st<System::Net: :IPAddress*>
(Net::Dns::GetH ostByName(Net:: Dns::GetHostNam e())->AddressList->GetValue(0)) ;

Arnaud
MVP - VC

[Carl Daniel [VC++ MVP]]

<ad******@clu b-internet.fr> wrote in message
news:11******** *************@z 14g2000cwz.goog legroups.com...
Carl Daniel [VC++ MVP] a écrit :

Try this:

homeip = (System::Net::I PAddress
*)Net::Dns::Get HostByName(Net: :Dns::GetHostNa me())->AddressList->GetValue(0);

Or better :

homeip=__try_c ast<System::Net ::IPAddress*>
(Net::Dns::Get HostByName(Net: :Dns::GetHostNa me())->AddressList->GetValue(0)) ;

Yep, that's better - always prefer the new cast syntax so the intent and
behavior of the cast is apparent.

-cd