Programmatic object creation

I would like to create WPF objects programmatically. Does anyone know of a
tutorial for this? For example, I would to do something like...

Ellipse myEllipse = new Ellipse();

Unfortunately, I can't get this syntax to compile. Ideally I would be able
to create and define a particular kind of object in XAML/C# and then
instantiate it. It appears like I need to create a resource defintion in XAML
and associate it with my codebehind? I'm not finding examples of this and
haven't been able to hack something together on my own.

I tried the free cell sample, but this implementation seems rather abstruse
to me. Can anyone point me to a more basic example? Thanks.

peter wrote:

> I would like to create WPF objects programmatically. Does anyone know
> of a tutorial for this? For example, I would to do something like...
>
> Ellipse myEllipse = new Ellipse();
>
> Unfortunately, I can't get this syntax to compile. Ideally I would be
> able to create and define a particular kind of object in XAML/C# and
> then instantiate it. It appears like I need to create a resource
> defintion in XAML and associate it with my codebehind? I'm not finding
> examples of this and haven't been able to hack something together on
> my own.
>
> I tried the free cell sample, but this implementation seems rather
> abstruse to me. Can anyone point me to a more basic example? Thanks.

You should definitely be able to do exactly what you're trying to do. It's
a very straightforward programming model. What erros are you getting?

-Drew
___________________________________
Drew Marsh
Chief Software Architect
Mimeo.com, Inc. - http://www.mimeo.com
Microsoft C# / WPF MVP
Weblog - http://blog.hackedbrain.com/

Compiler says that Ellipse is a 'field' but is used like a 'type'? I do have
an Ellipse in my xaml so I suppose it thinks I'm trying to instantiate an
instance rather than a class definition? But isn't Ellipse a WPF type? How do
I refer to the type?

Thanks!

Peter

"Drew Marsh" wrote:

> peter wrote:
>
> > I would like to create WPF objects programmatically. Does anyone know
> > of a tutorial for this? For example, I would to do something like...
> >
> > Ellipse myEllipse = new Ellipse();
> >
> > Unfortunately, I can't get this syntax to compile. Ideally I would be
> > able to create and define a particular kind of object in XAML/C# and
> > then instantiate it. It appears like I need to create a resource
> > defintion in XAML and associate it with my codebehind? I'm not finding
> > examples of this and haven't been able to hack something together on
> > my own.
> >
> > I tried the free cell sample, but this implementation seems rather
> > abstruse to me. Can anyone point me to a more basic example? Thanks.
>
> You should definitely be able to do exactly what you're trying to do. It's
> a very straightforward programming model. What erros are you getting?
>
> -Drew
> ___________________________________
> Drew Marsh
> Chief Software Architect
> Mimeo.com, Inc. - http://www.mimeo.com
> Microsoft C# / WPF MVP
> Weblog - http://blog.hackedbrain.com/
>
>
>

Do you have <Ellipse Name="Ellipse" /> ?

The names you specify as you have discovered will appear as fields from your
code-behind.

However, that should still work. I'm guessing you are missing a namespace
import.

Do you have "using System.Windows.Shapes;" ?

- Doug

> Compiler says that Ellipse is a 'field' but is used like a 'type'? I
> do have an Ellipse in my xaml so I suppose it thinks I'm trying to
> instantiate an instance rather than a class definition? But isn't
> Ellipse a WPF type? How do I refer to the type?
>
> Thanks!
>
> Peter
>
> "Drew Marsh" wrote:
>
>> peter wrote:
>>
>>> I would like to create WPF objects programmatically. Does anyone
>>> know of a tutorial for this? For example, I would to do something
>>> like...
>>>
>>> Ellipse myEllipse = new Ellipse();
>>>
>>> Unfortunately, I can't get this syntax to compile. Ideally I would
>>> be able to create and define a particular kind of object in XAML/C#
>>> and then instantiate it. It appears like I need to create a resource
>>> defintion in XAML and associate it with my codebehind? I'm not
>>> finding examples of this and haven't been able to hack something
>>> together on my own.
>>>
>>> I tried the free cell sample, but this implementation seems rather
>>> abstruse to me. Can anyone point me to a more basic example? Thanks.
>>>
>> You should definitely be able to do exactly what you're trying to do.
>> It's a very straightforward programming model. What erros are you
>> getting?
>>
>> -Drew
>> ___________________________________
>> Drew Marsh
>> Chief Software Architect
>> Mimeo.com, Inc. - http://www.mimeo.com
>> Microsoft C# / WPF MVP
>> Weblog - http://blog.hackedbrain.com/

Duh... good guess. Thanks.

Still, I'd say there are several things that could be improved here. First
of all, the compiler didn't suggest that I might be missing a using statement
as it usually does and instead gave me the worthless bracket missing error.

Also, it is interesting that I can add an Ellipse in XAML without importing
the library. Does VS do this for you when you add a control from the toolbox
to the designer? I'm not sure. Maybe this this is deliberate?

Peter

"Douglas Stockwell" wrote:

> Do you have <Ellipse Name="Ellipse" /> ?
>
> The names you specify as you have discovered will appear as fields from your
> code-behind.
>
> However, that should still work. I'm guessing you are missing a namespace
> import.
>
> Do you have "using System.Windows.Shapes;" ?
>
> - Doug
>
> > Compiler says that Ellipse is a 'field' but is used like a 'type'? I
> > do have an Ellipse in my xaml so I suppose it thinks I'm trying to
> > instantiate an instance rather than a class definition? But isn't
> > Ellipse a WPF type? How do I refer to the type?
> >
> > Thanks!
> >
> > Peter
> >
> > "Drew Marsh" wrote:
> >
> >> peter wrote:
> >>
> >>> I would like to create WPF objects programmatically. Does anyone
> >>> know of a tutorial for this? For example, I would to do something
> >>> like...
> >>>
> >>> Ellipse myEllipse = new Ellipse();
> >>>
> >>> Unfortunately, I can't get this syntax to compile. Ideally I would
> >>> be able to create and define a particular kind of object in XAML/C#
> >>> and then instantiate it. It appears like I need to create a resource
> >>> defintion in XAML and associate it with my codebehind? I'm not
> >>> finding examples of this and haven't been able to hack something
> >>> together on my own.
> >>>
> >>> I tried the free cell sample, but this implementation seems rather
> >>> abstruse to me. Can anyone point me to a more basic example? Thanks.
> >>>
> >> You should definitely be able to do exactly what you're trying to do.
> >> It's a very straightforward programming model. What erros are you
> >> getting?
> >>
> >> -Drew
> >> ___________________________________
> >> Drew Marsh
> >> Chief Software Architect
> >> Mimeo.com, Inc. - http://www.mimeo.com
> >> Microsoft C# / WPF MVP
> >> Weblog - http://blog.hackedbrain.com/
>
>
>