type definition

[ZhangZQ]

The Assembly provides GetTypes() for retrieving the defined type, is there a
way to add my type dynamically?
Thank you very much!

[Chris Taylor]

Hi,

Any types (classes, structs enums etc.) you define in the Assembly are
automatically part of that Assembly and accessable through reflection.

Hope this helps

Chris Taylor
"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:e6***************@TK2MSFTNGP10.phx.gbl...

The Assembly provides GetTypes() for retrieving the defined type, is there a way to add my type dynamically?
Thank you very much!

[Peter Koen]

"ZhangZQ" <zh*******@hotmail.com> wrote in
news:e6*************@TK2MSFTNGP10.phx.gbl:

The Assembly provides GetTypes() for retrieving the defined type, is
there a way to add my type dynamically?

You can create Types dynamically with System.Reflection.Emit

Greets
Peter

--
------ooo---OOO---ooo------

Peter Koen - www.kema.at
MCAD CAI/RS CASE/RS IAT

------ooo---OOO---ooo------

[ZhangZQ]

Chris Taylor,

Thank you.

Yes, that is what I have to do. But I want to know if it is possible to add
another assembly into current running assembly? then I can refer that data
type in current running assembly.

Thanks.

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:Ov**************@TK2MSFTNGP09.phx.gbl...

Hi,

You can use an appropriate overload of Activator.CreateInstance() or you
could use Assembly.Load() to load the Assembly and then use GetType/GetTypes and use reflection from there.

Hope this helps

Chris Taylor

"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:OH*************@tk2msftngp13.phx.gbl...

Peter,

Thanks.

My question is, supposing I defined a type(MyAssembly.MyType) in an

assembly

call MyAssembly.dll, if I don't refer it in compile time, I want to load

it

from runtime, how can I do that?
Thanks

"Peter Koen" <koen-newsreply&snusnu.at> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...

"ZhangZQ" <zh*******@hotmail.com> wrote in
news:e6*************@TK2MSFTNGP10.phx.gbl:

> The Assembly provides GetTypes() for retrieving the defined type, is
> there a way to add my type dynamically?
You can create Types dynamically with System.Reflection.Emit

Greets
Peter

--
------ooo---OOO---ooo------

Peter Koen - www.kema.at
MCAD CAI/RS CASE/RS IAT

------ooo---OOO---ooo------

[Chris Taylor]

Hi,

Please forgive me if I am not understanding you correctly. The current
running Assembly can use a public type in another Assembly by using either
Activator.CreateInstance() of Assembly.Load().

Regards

Chris Taylor
"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

Chris Taylor,

Thank you.

Yes, that is what I have to do. But I want to know if it is possible to add another assembly into current running assembly? then I can refer that data
type in current running assembly.

Thanks.

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:Ov**************@TK2MSFTNGP09.phx.gbl...

Hi,

You can use an appropriate overload of Activator.CreateInstance() or you
could use Assembly.Load() to load the Assembly and then use

GetType/GetTypes

and use reflection from there.

Hope this helps

Chris Taylor

"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:OH*************@tk2msftngp13.phx.gbl...

Peter,

Thanks.

My question is, supposing I defined a type(MyAssembly.MyType) in an

assembly

call MyAssembly.dll, if I don't refer it in compile time, I want to load

it

from runtime, how can I do that?
Thanks

"Peter Koen" <koen-newsreply&snusnu.at> wrote in message
news:%2****************@TK2MSFTNGP09.phx.gbl...
> "ZhangZQ" <zh*******@hotmail.com> wrote in
> news:e6*************@TK2MSFTNGP10.phx.gbl:
>
> > The Assembly provides GetTypes() for retrieving the defined type,

is > > there a way to add my type dynamically?
>
>
> You can create Types dynamically with System.Reflection.Emit
>
> Greets
> Peter
>
> --
> ------ooo---OOO---ooo------
>
> Peter Koen - www.kema.at
> MCAD CAI/RS CASE/RS IAT
>
> ------ooo---OOO---ooo------

[ZhangZQ]

Dear Chris Taylor,

I tried this, supposing I used VC++ to create an OCX call MyOCX, and there
is a object in the OCX call MyObject. I used the AxImp.exe to generate the
proxy assembly call MyOCXLib.dll. Now in my code

Assembly myAssembly = Assembly.LoadFrom("MyOCXLib.dll");
Type myObjType = myAssembly.GetType("MyOCXLib.MyObject");

MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(myObjT ype);
// the above line will cause an exception to be thorwn with error message
"specified cast in invalid"
// If I change to the following line
MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(typeof (MyOCXLib.MyObject));
// then it is ok.

that is the problem. do you know why? I think the MyOCXLib.MyObject type
does not exist in the current Assembly. What do you think?
Regards,
ZhangZQ

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:OK**************@TK2MSFTNGP09.phx.gbl...

Hi,

Please forgive me if I am not understanding you correctly. The current
running Assembly can use a public type in another Assembly by using either
Activator.CreateInstance() of Assembly.Load().

Regards

Chris Taylor
"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

Chris Taylor,

Thank you.

Yes, that is what I have to do. But I want to know if it is possible to add

another assembly into current running assembly? then I can refer that data

type in current running assembly.

Thanks.

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:Ov**************@TK2MSFTNGP09.phx.gbl...

Hi,

You can use an appropriate overload of Activator.CreateInstance() or you could use Assembly.Load() to load the Assembly and then use

GetType/GetTypes

and use reflection from there.

Hope this helps

Chris Taylor

"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:OH*************@tk2msftngp13.phx.gbl...
> Peter,
>
> Thanks.
>
> My question is, supposing I defined a type(MyAssembly.MyType) in an
assembly
> call MyAssembly.dll, if I don't refer it in compile time, I want to

load it
> from runtime, how can I do that?
>
>
> Thanks
>
> "Peter Koen" <koen-newsreply&snusnu.at> wrote in message
> news:%2****************@TK2MSFTNGP09.phx.gbl...
> > "ZhangZQ" <zh*******@hotmail.com> wrote in
> > news:e6*************@TK2MSFTNGP10.phx.gbl:
> >
> > > The Assembly provides GetTypes() for retrieving the defined

type, is > > > there a way to add my type dynamically?
> >
> >
> > You can create Types dynamically with System.Reflection.Emit
> >
> > Greets
> > Peter
> >
> > --
> > ------ooo---OOO---ooo------
> >
> > Peter Koen - www.kema.at
> > MCAD CAI/RS CASE/RS IAT
> >
> > ------ooo---OOO---ooo------
>
>

[Chris Taylor]

Hi,

You do not need to use Assembly.LoadFrom and Activator.Create..., I gave
both as an alternative.
Try the following.

MyOCXLib.MyObject myObj = (MyOCXLib.MyObject)Activator.CreateInstance(
"MyOCXLib.dll", "MyOCXLib.MyObject" );

I did not test this so excuse any typos.

Hope this helps

Chris Taylor

"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:eg**************@TK2MSFTNGP09.phx.gbl...

Dear Chris Taylor,

I tried this, supposing I used VC++ to create an OCX call MyOCX, and there
is a object in the OCX call MyObject. I used the AxImp.exe to generate the
proxy assembly call MyOCXLib.dll. Now in my code

Assembly myAssembly = Assembly.LoadFrom("MyOCXLib.dll");
Type myObjType = myAssembly.GetType("MyOCXLib.MyObject");

MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(myObjT ype);
// the above line will cause an exception to be thorwn with error message
"specified cast in invalid"
// If I change to the following line
MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(typeof (MyOCXLib.MyObject));
// then it is ok.

that is the problem. do you know why? I think the MyOCXLib.MyObject type
does not exist in the current Assembly. What do you think?
Regards,
ZhangZQ

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:OK**************@TK2MSFTNGP09.phx.gbl...

Hi,

Please forgive me if I am not understanding you correctly. The current
running Assembly can use a public type in another Assembly by using either

Activator.CreateInstance() of Assembly.Load().

Regards

Chris Taylor
"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...

Chris Taylor,

Thank you.

Yes, that is what I have to do. But I want to know if it is possible to

add

another assembly into current running assembly? then I can refer that data type in current running assembly.

Thanks.

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:Ov**************@TK2MSFTNGP09.phx.gbl...
> Hi,
>
> You can use an appropriate overload of Activator.CreateInstance() or you > could use Assembly.Load() to load the Assembly and then use
GetType/GetTypes
> and use reflection from there.
>
> Hope this helps
>
> Chris Taylor
>
> "ZhangZQ" <zh*******@hotmail.com> wrote in message
> news:OH*************@tk2msftngp13.phx.gbl...
> > Peter,
> >
> > Thanks.
> >
> > My question is, supposing I defined a type(MyAssembly.MyType) in

an > assembly
> > call MyAssembly.dll, if I don't refer it in compile time, I want

to load

> it
> > from runtime, how can I do that?
> >
> >
> > Thanks
> >
> > "Peter Koen" <koen-newsreply&snusnu.at> wrote in message
> > news:%2****************@TK2MSFTNGP09.phx.gbl...
> > > "ZhangZQ" <zh*******@hotmail.com> wrote in
> > > news:e6*************@TK2MSFTNGP10.phx.gbl:
> > >
> > > > The Assembly provides GetTypes() for retrieving the defined

type,

is

> > > > there a way to add my type dynamically?
> > >
> > >
> > > You can create Types dynamically with System.Reflection.Emit
> > >
> > > Greets
> > > Peter
> > >
> > > --
> > > ------ooo---OOO---ooo------
> > >
> > > Peter Koen - www.kema.at
> > > MCAD CAI/RS CASE/RS IAT
> > >
> > > ------ooo---OOO---ooo------
> >
> >
>
>

[ZhangZQ]

Thanks, let me try it.

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:%2****************@TK2MSFTNGP11.phx.gbl...

Hi,

You do not need to use Assembly.LoadFrom and Activator.Create..., I gave
both as an alternative.
Try the following.

MyOCXLib.MyObject myObj = (MyOCXLib.MyObject)Activator.CreateInstance(
"MyOCXLib.dll", "MyOCXLib.MyObject" );

I did not test this so excuse any typos.

Hope this helps

Chris Taylor

"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:eg**************@TK2MSFTNGP09.phx.gbl...

Dear Chris Taylor,

I tried this, supposing I used VC++ to create an OCX call MyOCX, and there

is a object in the OCX call MyObject. I used the AxImp.exe to generate the proxy assembly call MyOCXLib.dll. Now in my code

Assembly myAssembly = Assembly.LoadFrom("MyOCXLib.dll");
Type myObjType = myAssembly.GetType("MyOCXLib.MyObject");

MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(myObjT ype);
// the above line will cause an exception to be thorwn with error message "specified cast in invalid"
// If I change to the following line
MyOCXLib.MyObject myObj =
(MyOCXLib.MyObject)Activator.CreateInstance(typeof (MyOCXLib.MyObject));
// then it is ok.

that is the problem. do you know why? I think the MyOCXLib.MyObject type
does not exist in the current Assembly. What do you think?
Regards,
ZhangZQ

"Chris Taylor" <ch*************@hotmail.com> wrote in message
news:OK**************@TK2MSFTNGP09.phx.gbl...

Hi,

Please forgive me if I am not understanding you correctly. The current
running Assembly can use a public type in another Assembly by using either Activator.CreateInstance() of Assembly.Load().

Regards

Chris Taylor
"ZhangZQ" <zh*******@hotmail.com> wrote in message
news:en**************@TK2MSFTNGP09.phx.gbl...
> Chris Taylor,
>
> Thank you.
>
> Yes, that is what I have to do. But I want to know if it is possible to add
> another assembly into current running assembly? then I can refer

that data

> type in current running assembly.
>
> Thanks.
>
>
>
> "Chris Taylor" <ch*************@hotmail.com> wrote in message
> news:Ov**************@TK2MSFTNGP09.phx.gbl...
> > Hi,
> >
> > You can use an appropriate overload of Activator.CreateInstance()

or you

> > could use Assembly.Load() to load the Assembly and then use
> GetType/GetTypes
> > and use reflection from there.
> >
> > Hope this helps
> >
> > Chris Taylor
> >
> > "ZhangZQ" <zh*******@hotmail.com> wrote in message
> > news:OH*************@tk2msftngp13.phx.gbl...
> > > Peter,
> > >
> > > Thanks.
> > >
> > > My question is, supposing I defined a type(MyAssembly.MyType) in

an > > assembly
> > > call MyAssembly.dll, if I don't refer it in compile time, I want to load
> > it
> > > from runtime, how can I do that?
> > >
> > >
> > > Thanks
> > >
> > > "Peter Koen" <koen-newsreply&snusnu.at> wrote in message
> > > news:%2****************@TK2MSFTNGP09.phx.gbl...
> > > > "ZhangZQ" <zh*******@hotmail.com> wrote in
> > > > news:e6*************@TK2MSFTNGP10.phx.gbl:
> > > >
> > > > > The Assembly provides GetTypes() for retrieving the defined

type,

is
> > > > > there a way to add my type dynamically?
> > > >
> > > >
> > > > You can create Types dynamically with System.Reflection.Emit
> > > >
> > > > Greets
> > > > Peter
> > > >
> > > > --
> > > > ------ooo---OOO---ooo------
> > > >
> > > > Peter Koen - www.kema.at
> > > > MCAD CAI/RS CASE/RS IAT
> > > >
> > > > ------ooo---OOO---ooo------
> > >
> > >
> >
> >
>
>