C# Reflection

[Luiz Ragazzi]

Please, anyone can help on this:
I need to call a method from my class
but I need the information type at run time..as I know, I have to use
GetType method of the object class.
Any idea how to use this to call the method of my class ?

Regards,
Luiz

[Jon Skeet [C# MVP]]

Re: C# Reflection

Luiz Ragazzi <LuizRagazzi@di scussions.micro soft.com> wrote:[color=blue]
> Please, anyone can help on this:
> I need to call a method from my class
> but I need the information type at run time..as I know, I have to use
> GetType method of the object class.
> Any idea how to use this to call the method of my class ?[/color]

It's not at all clear what you're asking. What information do you
already have? Could you provide a short but complete program which
shows what you're trying to do, just with a line saying "I need to do
<x> here" where you're stuck?

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too

[rossum]

Re: C# Reflection

On Fri, 24 Jun 2005 09:22:02 -0700, Luiz Ragazzi
<LuizRagazzi@di scussions.micro soft.com> wrote:
[color=blue]
>Please, anyone can help on this:
>I need to call a method from my class
>but I need the information type at run time..as I know, I have to use
>GetType method of the object class.
>Any idea how to use this to call the method of my class ?
>
>Regards,
>Luiz[/color]

If you want help specifically with C# you might get a better response
on news://microsoft.public.dotnet.languages.csharp

rossum


The ultimate truth is that there is no ultimate truth

[Luiz Ragazzi]

Re: C# Reflection

Hi Jon,
please take a look:
DataModel.DataL oader is my assembly, DmDataLoader.EU ROBONUS is my class
I want to call the method DeleteAll from my class EUROBONUS.

I created an object myobj and call CreateInstance:
object myobj = new object();
myobj =
Activator.Creat eInstance("Data Model.DataLoade r","DmDataLoade r.EUROBONUS");

line 1 and line 2 I've tryed the code:
line1:
myobj.GetType() .InvokeMember(" DeleteAll",Bind ingFlags.Public |
BindingFlags.In vokeMethod,null ,myobj,new object[] {"euro" });
the line 1: I got the message - "Method
System.Runtime. Remoting.Object Handle.DeleteAl l not found."

line 2:
myobj.GetType() .GetMethod("Del eteAll",Binding Flags.Public |
BindingFlags.Cr eateInstance | BindingFlags.In stance).Invoke( null,new
object[] { "euro"});
the line 2 I got "Object reference not set to an instance of an object."

PS.: "euro" is a string parameter passed to the method DeleteAll

thanks.

"Jon Skeet [C# MVP]" wrote:
[color=blue]
> Luiz Ragazzi <LuizRagazzi@di scussions.micro soft.com> wrote:[color=green]
> > Please, anyone can help on this:
> > I need to call a method from my class
> > but I need the information type at run time..as I know, I have to use
> > GetType method of the object class.
> > Any idea how to use this to call the method of my class ?[/color]
>
> It's not at all clear what you're asking. What information do you
> already have? Could you provide a short but complete program which
> shows what you're trying to do, just with a line saying "I need to do
> <x> here" where you're stuck?
>
> --
> Jon Skeet - <skeet@pobox.co m>
> http://www.pobox.com/~skeet
> If replying to the group, please do not mail me too
>[/color]

[Jon Skeet [C# MVP]]

Re: C# Reflection

Luiz Ragazzi <LuizRagazzi@di scussions.micro soft.com> wrote:[color=blue]
> please take a look:
> DataModel.DataL oader is my assembly, DmDataLoader.EU ROBONUS is my class
> I want to call the method DeleteAll from my class EUROBONUS.
>
> I created an object myobj and call CreateInstance:
> object myobj = new object();[/color]

Why bother creating an object which you're then just discarding?
[color=blue]
> myobj =
> Activator.Creat eInstance("Data Model.DataLoade r","DmDataLoade r.EUROBONUS");[/color]

And does that part work?
[color=blue]
> line 1 and line 2 I've tryed the code:
> line1:
> myobj.GetType() .InvokeMember(" DeleteAll",Bind ingFlags.Public |
> BindingFlags.In vokeMethod,null ,myobj,new object[] {"euro" });
> the line 1: I got the message - "Method
> System.Runtime. Remoting.Object Handle.DeleteAl l not found."[/color]

Here you don't include BindingFlags.In stance - put that in and you may
well find it works.
[color=blue]
> line 2:
> myobj.GetType() .GetMethod("Del eteAll",Binding Flags.Public |
> BindingFlags.Cr eateInstance | BindingFlags.In stance).Invoke( null,new
> object[] { "euro"});
> the line 2 I got "Object reference not set to an instance of an object."[/color]

Well, you don't want that, as that's asking for constructors rather
than methods.
[color=blue]
> PS.: "euro" is a string parameter passed to the method DeleteAll[/color]

If the above doesn't help, it would make things easier if you could
provide a short but complete program which demonstrates the
problem.

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

--
Jon Skeet - <skeet@pobox.co m>

http://www.pobox.com/~skeet

If replying to the group, please do not mail me too