Pythonnet错误：XamlParseException:'未能从tex创建“Click”

Question

我以前在研究IronPython（使用WPF开发一些gui），最近我开始尝试pythonnet。你知道吗

但是我发现在IronPython上工作的xaml文件在CPython+pythonnet上不工作。在IronPython中，我可以定义按钮。单击在xaml文件中，但在CPython中似乎不可能。我试图寻找答案，但没有找到相关的。所以希望你能救我。。。你知道吗

以下是我的主要剧本：

import clr
clr.AddReference(r"wpf\PresentationFramework")
from System.IO import StreamReader
from System.Windows.Markup import XamlReader
from System.Windows import Application, Window
from System.Threading import Thread, ThreadStart, ApartmentState

class MyWindow(Window):
    def __init__(self):
        stream = StreamReader('test.xaml')
        window = XamlReader.Load(stream.BaseStream)
        Application().Run(window)

    def Button_Click(self, sender, e):
        print('Button has clicked')

if __name__ == '__main__':
    thread = Thread(ThreadStart(MyWindow))
    thread.SetApartmentState(ApartmentState.STA)
    thread.Start()
    thread.Join()

这里是测试.xmal地址：

<Window 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Title="WpfApplication1" Height="300" Width="300"> 
    <Grid>
        <Button x:Name="BUTTON" Content="Button" HorizontalAlignment="Left" Margin="101,82,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click" Background="#FFFF1616"/>
    </Grid>
</Window> 

我得到的错误信息是：

未处理的异常：Python.Runtime.PythonException异常：XamlParseException:'无法从文本“Button\u Click.”创建“Click”。'行号“6”和行位置“132”。

如果我加载相同的xaml并在IronPython中保持相同的类结构，那么脚本就可以正常工作：

import wpf
from System.Windows import Application, Window

class MyWindow(Window):
    def __init__(self):
        self.ui = wpf.LoadComponent(self, 'test.xaml')

    def Button_Click(self, sender, e):
        print('Button has clicked')

if __name__ == '__main__':
    Application().Run(MyWindow())

非常感谢你的帮助！你知道吗

Answer 1

不能使用pythonnet包在python中导入wpf。但是您可以在PresentationFramework中使用PresentationFramework加载XAML文件，这有一些限制。XamlReader无法执行事件处理，因此我们可以在python文件中手动添加该按钮的事件，而不是在XAML文件中。你知道吗

听到了吗图形用户界面.xaml代码

<Window 
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
       Title="WpfApplication1" Height="300" Width="300">
    <Grid>
        <Label Content="Hello world" HorizontalAlignment="Left" Height="32" Margin="65,77,0,0" VerticalAlignment="Top" Width="119"/>
        <Button Name="button1" Content="Button" HorizontalAlignment="Left" Margin="65,145,0,0" VerticalAlignment="Top" Width="75"/>
    </Grid>
</Window> 

然后听python代码

import clr
clr.AddReference("wpf\PresentationFramework") 
from System.IO import *
from System.Windows.Markup import XamlReader
from System.Windows import *
from System.Threading import Thread, ThreadStart, ApartmentState
from System.Windows.Controls import *

class MyWindow(Window):
    def __init__(self):
        try:
            stream = StreamReader('gui.xaml')
            self.window = XamlReader.Load(stream.BaseStream)
            ButtoninXAML = LogicalTreeHelper.FindLogicalNode(self.window, "button1") 
            ButtoninXAML.Click +=  RoutedEventHandler(self.Button_Click)
            Application().Run(self.window)      
        except Exception as ex:
            print(ex)
    def Button_Click(self, sender, e):
        print('clicked')


if __name__ == '__main__':
    thread = Thread(ThreadStart(MyWindow))
    thread.SetApartmentState(ApartmentState.STA)
    thread.Start()
    thread.Join()