我可以将 WPF 文本框或其他控件绑定到 IronPython 属性吗？答案

【问题标题】：Can I bind a WPF TextBox or other control to an IronPython property?我可以将 WPF 文本框或其他控件绑定到 IronPython 属性吗？
【发布时间】：2019-10-05 21:21:40
【问题描述】：

我正在 IronPython 中实现一个 UserControl。我想将控件绑定到 IronPython 属性。但是当绑定创建时，它会抱怨：

Cannot create default converter to perform 'two-way' conversions between types 'IronPython.Runtime.PythonProperty' and 'System.String'. Consider using Converter property of Binding. BindingExpression:Path=z; DataItem='OldInstance' (HashCode=27321283); target element is 'TextBox' (Name=''); target property is 'Text' (type 'String')

.. 当输入文本时，它不会调用 setter，而是用新文本覆盖属性对象。有没有办法使这项工作？如果没有，最好的选择是什么？

这是我的代码：

import System
from System import Action
from System.Windows import Window
from System.Windows.Data import Binding, BindingMode
from System.Windows.Controls import StackPanel, Label, TextBox, Orientation
class xclass():
  def __init__(self):
    self.__y = "ytext"
    self.zval = "ztext"
  @property
  def y(self):
    print "get_y", self.__y
    return self.__y
  @y.setter
  def y(self, value):
    self.__y = value
    print "set_y", value
  def get_z(self):
    print "get_z", self.zval
    return self.zval
  def set_z(self, value):
    print "set_z", value
    self.zval = value
  z = property(get_z, set_z)
x = xclass()
def f():
  win = Window()
  sp = StackPanel()
  sp.Orientation = Orientation.Horizontal
  sp.Height=24
  lb = Label()
  lb.Content="Label0"
  bd1 = Binding("y")
  bd1.Source = x
  bd2 = Binding("z")
  bd2.Source = x
  tb1 = TextBox()
  tb1.SetBinding(TextBox.TextProperty, bd1)
  tb2 = TextBox()
  tb2.SetBinding(TextBox.TextProperty, bd2)
  win.AddChild(sp)
  sp.AddChild(lb)
  sp.AddChild(tb1)
  sp.AddChild(tb2)
  win.Show()
  win.Width = 400
  win.Height = 200
System.Windows.Application.Current.Dispatcher.BeginInvoke(Action(f));

【问题讨论】：

标签： .net wpf mvvm ironpython

【解决方案1】：

xclass 必须继承自 System.Object！

class xclass(System.Object):

仅此而已。

【讨论】：