Hello, Pascal.
Thank you for your help. Working. Used wpf.LoadComponent.
Here is the complete code (case study). Can anyone come in handy.
Still, I would like to know whether it is possible to determine the XAML
namespace environment in which IronPython loaded XAML (for example
because: xmlns: nspy = "clr-namespace: MyXAML_Py;")?
1) module proba.py:
import wpf
import clr
import clrtype
import System
from System.Windows import Application, Window, MessageBox
class IProduct(object):
__metaclass__ = clrtype.ClrInterface
_clrnamespace = "IronPython.Samples.ClrType"
@property
@clrtype.accepts()
@clrtype.returns(str)
def Name(self): raise RuntimeError("this should not get called")
@property
@clrtype.accepts()
@clrtype.returns(float)
def Cost(self): raise RuntimeError("this should not get called")
@clrtype.accepts()
@clrtype.returns(bool)
def IsAvailable(self): raise RuntimeError("this should not get called")
class Product(IProduct):
__metaclass__ = clrtype.ClrClass
_clrnamespace = "IronPython.Samples.ClrType"
_clrfields = {
"name":str,
"cost":float,
"_quantity":int
}
CLSCompliant = clrtype.attribute(System.CLSCompliantAttribute)
clr.AddReference("System.Xml")
XmlRoot = clrtype.attribute(System.Xml.Serialization.XmlRootAttribute)
_clrclassattribs = [
# Use System.Attribute subtype directly for custom attributes
without
arguments
System.ObsoleteAttribute,
# Use clrtype.attribute for custom attributes with arguments
(either
positional, named, or both)
CLSCompliant(False),
XmlRoot("product", Namespace="www.contoso.com")
]
def __init__(self, name, cost, quantity):
self.name = name
self.cost = cost
self._quantity = quantity
# IProduct methods
def Name(self): return self.name
def Cost(self): return self.cost
def IsAvailable(self): return self.quantity != 0
@property
@clrtype.accepts()
@clrtype.returns(int)
def quantity(self): return self._quantity
@quantity.setter
@clrtype.accepts(int)
@clrtype.returns()
def quantity(self, value): self._quantity = value
@clrtype.accepts(float)
@clrtype.returns(float)
def calc_total(self, discount = 0.0):
return (self.cost - discount) * self.quantity
p = Product("SergIv", 10.0, 42)
class MyWindow(Window):
global p
def __init__(self):
Cont=wpf.LoadComponent(self, 'proba.xaml')
Cont.DataContext = p
def button1_Click(self, sender, e):
MessageBox.Show(p.name)
if __name__ == '__main__':
Application().Run(MyWindow())
2) file proba.xaml:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation";
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml";
Title="Window1" Height="300" Width="300">
<Grid>
<Button Name="cnop" Content="Button" Height="50"
HorizontalAlignment="Left" Margin="19,64,0,0"
VerticalAlignment="Top" Width="148" Click="button1_Click"/>
<Label Content="{Binding Path=name}" Height="33"
HorizontalAlignment="Left" Margin="20,12,0,0"
VerticalAlignment="Top" Width="244" Name="Lab1"/>
</Grid>
</Window>
>===================================================================
> To enable Data binding you need to set the DataContext property of the
> object loaded from xaml
>
> you could do something like this
> sr = StreamReader(path)
> userCtrl = XamlReader.Load(sr.BaseStream)
> Content = userCtrl
> userCtrl.DataContext = self
>
> -----Original Message-----
> From: ironpython-users-bounces+pascal=travobject....@python.org
> [mailto:ironpython-users-bounces+pascal=travobject....@python.org] On
> Behalf
> Of sepa...@sibmail.com
> Sent: May-17-12 11:43 AM
> To: ironpython-users@python.org
> Subject: [Ironpython-users] [Fwd: RE: How do I get access to the objects
> of
> this class which is loaded XAML]
>
> Hello,
> That is, if the load XAML, as specified below, the Label (Lab1) can be
> binding on the CLR type (p.name) is defined in proba.py (do not forget
> that
> the code is the XAML load in proba.py)?
>
> --------------------------- Original Message ---------------------------
> Тема: RE: [Ironpython-users] How do I get access to the objects of this
> class which is loaded XAML
> От: "Pascal Normandin" <pas...@travobject.com>
> Дата: Чтв, Май 17, 2012 21:50
> Кому: sepa...@sibmail.com
> ironpython-users@python.org
> --------------------------------------------------------------------------
>
> Hello,
>
> I'm not sure about the LoadComponent method but I have used the
> XamlReader.Parse(xaml) and it works well for me.
>
> Using something like
>
> sr = StreamReader(path)
> userCtrl = XamlReader.Load(sr.BaseStream) Content = userCtrl
>
> Hope that helps;
> Pascal
>
> -----Original Message-----
> From: ironpython-users-bounces+pascal=travobject....@python.org
> [mailto:ironpython-users-bounces+pascal=travobject....@python.org] On
> Behalf
> Of sepa...@sibmail.com
> Sent: May-17-12 6:40 AM
> To: ironpython-users@python.org
> Subject: [Ironpython-users] How do I get access to the objects of this
> class
> which is loaded XAML
>
> How do I get access to the objects of this class which is loaded XAML.
> Given that the objects are presented to the CLR types?
> What namespace should be specified?
> The text below gives an error.
>
> 1) module proba.py:
> ....................................
> import WPF
> class MyWindow(Window):
> # p - CLR type, has a property name
> global p
> def __init__(self):
> wpf.LoadComponent(self, 'proba.xaml')
>
> def button1_Click(self, sender, e):
> MessageBox.Show(p.name)
> ....................................
> not the entire text of the program
>
> 2) file proba.xaml:
> <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation";
> xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml";
> <!-- This part discusses the -->
> xmlns:local="clr-namespace:proba"
> <!-- .................. -->
> Title="Window1" Height="300" Width="300">
> <Grid>
> <Button Name="cnop" Click="button1_Click"/>
> <Label Content="{Binding Source={x1:p}, Path=name}" Height="33"
> HorizontalAlignment="Left" Margin="20,12,0,0"
> VerticalAlignment="Top" Width="244" Name="Lab1"/>
> </Grid>
> </Window>
>
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>
>
>
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>
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