User Control WPF

REDO10 · January 8, 2025, 2:30pm

I can’t load my own wpf control inside my main script where I’m getting this error:

Here is my Main Script

Main script

import clr
from sys import path
sys.path.append(r"D:\Examples_pyRevit\WPF_Forms")
clr.AddReference("IronPython.Wpf")
clr.AddReference('PresentationFramework')
clr.AddReference('PresentationCore')
clr.AddReference('WindowsBase')

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, TextBlock, Grid
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
import wpf  


from TimePicker import TimePicker


class MainWindow(Window):
    def __init__(self):
        layout = '''
            <Window 
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="MainWindow" Height="450" Width="400">
                <Grid x:Name="My_Grid">
                </Grid>
            </Window>'''
        wpf.LoadComponent(self, StringReader(layout))
        self.populate_grid()

    def populate_grid(self):
        # Create a TabControl
        tab_control = TabControl()

        symbol = {"x": "X", "y": "Y", "z": "Z"}
        for key in ["x", "y", "z"]:
            text_block = TextBlock()
            text_block.Text = "I'm a text block in : Tab {}".format(symbol[key])
            text_block.FontSize = 20
            text_block.FontWeight = FontWeights.UltraBold
            text_block.FontStyle = FontStyles.Italic
            tab_item = TabItem()
            tab_item.Header = "Tab {}".format(symbol[key])
            tab_item.Content = text_block
            tab_control.Items.Add(tab_item)

        time_picker = TimePicker()
        time_picker_tab = TabItem()
        time_picker_tab.Header = "Time Picker"
        time_picker_tab.Content = time_picker
        tab_control.Items.Add(time_picker_tab)

        # Add the TabControl to the Grid
        self.My_Grid.Children.Add(tab_control)


main_window = MainWindow()
OUT = main_window.ShowDialog()

and here is my own control script

TimePicker control

import clr
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("PresentationCore")
clr.AddReference("WindowsBase")

from System import DateTime
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from System.IO import StringReader
from System.Windows.Markup import XamlReader
import wpf

class TimePicker(UserControl):
    def __init__(self):
        self.hour = DateTime.Now.Hour
        self.min = DateTime.Now.Minute

        # Define the XAML string for the UserControl
        layout = '''
            <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                         d:DesignHeight="450" d:DesignWidth="800">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition/>
                        <ColumnDefinition Width="2*"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <RepeatButton x:Name="btnIncreaseHour"
                              Content="+" FontSize="24"
                              Click="btnIncreaseHour_Click"
                              Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseHour"
                              Content="-" FontSize="24"
                              Grid.Row="1" 
                              Click="btnDecreaseHour_Click"
                               Interval="100"/>
                    <RepeatButton x:Name="btnIncreaseMins"
                              Content="+" FontSize="24"
                              Grid.Column="2" 
                              Click="btnIncreaseMins_Click"
                               Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseMins"
                              Content="-" FontSize="24"
                               Grid.Column="2"
                              Grid.Row="1"
                               Interval="100" Click="btnDecreaseMins_Click"/>
                    <TextBox x:Name="tbxTimePicker"
                        FontSize="42"  
                        Foreground="Blue"
                        Grid.Column="1"
                        Grid.RowSpan="2"
                        TextAlignment="Center"/>
                </Grid>
            </UserControl>'''

         wpf.LoadComponent(self, StringReader(layout))
        
        # Initialize the TextBox with the current time
        
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

        # Attach event handlers
        
        self.btnIncreaseHour.Click += self.btnIncreaseHour_Click

        
        self.btnDecreaseHour.Click += self.btnDecreaseHour_Click

        self.btnIncreaseMins.Click += self.btnIncreaseMins_Click

        
        self.btnDecreaseMins.Click += self.btnDecreaseMins_Click

    def btnIncreaseHour_Click(self, sender, e):
        self.hour += 1
        if self.hour == 24:
            self.hour = 0
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnDecreaseHour_Click(self, sender, e):
        self.hour -= 1
        if self.hour == -1:
            self.hour = 23
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnIncreaseMins_Click(self, sender, e):
        self.min += 1
        if self.min == 60:
            self.min = 0
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnDecreaseMins_Click(self, sender, e):
        self.min -= 1
        if self.min == -1:
            self.min = 59
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

please help me to solve this issue

Thanks.

c.poupin · January 8, 2025, 4:04pm

Your code is not complete, but I tested with this code slightly modified and it works.

Note that I do not have the Blend SDK installed.

import clr
from sys import path
sys.path.append(r"E:\XXXX\py_module_test")
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("System.Xml")
clr.AddReference("PresentationCore")
clr.AddReference("System.Windows")

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, TextBlock, Grid
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
from System.Xml import XmlReader
from System import DateTime
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from System.Windows import LogicalTreeHelper 
from System.Windows.Markup import XamlReader, XamlWriter
import wpf  

if "TimePicker" in sys.modules:
    del sys.modules["TimePicker"]
    
from TimePicker import TimePicker


class MainWindow(Window):
    def __init__(self):
        layout = '''
            <Window 
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="MainWindow" Height="450" Width="400">
                <Grid x:Name="My_Grid">
                </Grid>
            </Window>'''
        wpf.LoadComponent(self, StringReader(layout))
        self.populate_grid()

    def populate_grid(self):
        # Create a TabControl
        tab_control = TabControl()

        symbol = {"x": "X", "y": "Y", "z": "Z"}
        for key in ["x", "y", "z"]:
            text_block = TextBlock()
            text_block.Text = "I'm a text block in : Tab {}".format(symbol[key])
            text_block.FontSize = 20
            text_block.FontWeight = FontWeights.UltraBold
            text_block.FontStyle = FontStyles.Italic
            tab_item = TabItem()
            tab_item.Header = "Tab {}".format(symbol[key])
            tab_item.Content = text_block
            tab_control.Items.Add(tab_item)

        time_picker = TimePicker()
        time_picker_tab = TabItem()
        time_picker_tab.Header = "Time Picker"
        time_picker_tab.Content = time_picker
        tab_control.Items.Add(time_picker_tab)

        # Add the TabControl to the Grid
        self.My_Grid.Children.Add(tab_control)

main_window = MainWindow()
OUT = main_window.ShowDialog()

TimePicker.py

import clr
from sys import path
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("System.Xml")
clr.AddReference("PresentationCore")
clr.AddReference("System.Windows")

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, TextBlock, Grid
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
from System.Xml import XmlReader
from System import DateTime
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from System.Windows import LogicalTreeHelper 
import wpf  


class TimePicker(UserControl):
    def __init__(self):
        self.hour = DateTime.Now.Hour
        self.min = DateTime.Now.Minute

        # Define the XAML string for the UserControl
        layout = '''
            <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                         Height="450" Width="800">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition/>
                        <ColumnDefinition Width="2*"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <RepeatButton x:Name="btnIncreaseHour"
                              Content="+" FontSize="24"
                              Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseHour"
                              Content="-" FontSize="24"
                              Grid.Row="1" 
                               Interval="100"/>
                    <RepeatButton x:Name="btnIncreaseMins"
                              Content="+" FontSize="24"
                              Grid.Column="2" 
                               Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseMins"
                              Content="-" FontSize="24"
                               Grid.Column="2"
                              Grid.Row="1"
                               Interval="100" />
                    <TextBox x:Name="tbxTimePicker"
                        FontSize="42"  
                        Foreground="Blue"
                        Grid.Column="1"
                        Grid.RowSpan="2"
                        TextAlignment="Center"/>
                </Grid>
            </UserControl>'''
            
        wpf.LoadComponent(self, StringReader(layout))
        
        # Initialize the TextBox with the current time
        
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

        # Attach event handlers
        
        #self.btnIncreaseHour.Click += self.btnIncreaseHour_Click

REDO10 · January 8, 2025, 5:10pm

@c.poupin

I’ve placed the “TimePicker.xaml” file in the same directory as the script “TimePicker.py”. I want to keep it outside this later and load it using a path that I define inside the script with wpf.LoadComponent(self, "xaml_path"), but I’m getting an error and I’m confused about how to do that!!

here the xaml for TimePicker:

TimePicker.xaml

<UserControl x:Class="My_Control.My_user_control.TimePicker"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:My_Control.My_user_control"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition Width="2*"/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <RepeatButton x:Name="btnIncreaseHour"
                  Content="+" FontSize="24"
                  Click="btnIncreaseHour_Click"
                  Interval="100"/>
        <RepeatButton x:Name="btnDecreaseHour"
                  Content="-" FontSize="24"
                  Grid.Row="1" 
                  Click="btnDecreaseHour_Click"
                   Interval="100"/>
        <RepeatButton x:Name="btnIncreaseMins"
                  Content="+" FontSize="24"
                  Grid.Column="2" 
                  Click="btnIncreaseMins_Click"
                   Interval="100"/>
        <RepeatButton x:Name="btnDecreaseMins"
                  Content="-" FontSize="24"
                   Grid.Column="2"
                  Grid.Row="1"
                   Interval="100" Click="btnDecreaseMins_Click"/>
        <TextBox x:Name="tbxTimePicker"
            FontSize="42"  
            Foreground="Blue"
            Grid.Column="1"
            Grid.RowSpan="2"
            TextAlignment="Center"/>

    </Grid>
</UserControl>

and here the completed script for TimePicker

TimePicker.py

import clr
import os
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("System.Xml")
clr.AddReference("PresentationCore")
clr.AddReference("System.Windows")

from System import DateTime
from System.IO import StringReader
from System.Windows.Markup import XamlReader, XamlWriter
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from wpf import LoadComponent
import wpf


script_path = os.path.dirname(__file__)
class TimePicker(UserControl):
    def __init__(self):
        # Load the XAML layout
        xaml_path = os.path.join(script_path, 'TimePicker.xaml')
        wpf.LoadComponent(self, "xaml_path")
        self.hour = DateTime.Now.Hour
        self.min = DateTime.Now.Minute
        self.update_time_display()

    def update_time_display(self):
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnIncreaseHour_Click(self, sender, e):
        self.hour += 1
        if self.hour == 24:
            self.hour = 0
        self.update_time_display()

    def btnDecreaseHour_Click(self, sender, e):
        self.hour -= 1
        if self.hour == -1:
            self.hour = 23
        self.update_time_display()

    def btnIncreaseMins_Click(self, sender, e):
        self.min += 1
        if self.min == 60:
            self.min = 0
        self.update_time_display()

    def btnDecreaseMins_Click(self, sender, e):
        self.min -= 1
        if self.min == -1:
            self.min = 59
        self.update_time_display()

Thanks

c.poupin · January 8, 2025, 9:07pm

remove this x:Class="My_Control.My_user_control.TimePicker" from your TimePicker.xaml

and replace in your TimePicker.py
wpf.LoadComponent(self, "xaml_path")
by
wpf.LoadComponent(self, xaml_path)

REDO10 · January 9, 2025, 9:53am

@c.poupin

Even though I applied your suggestions, I can’t load TimePicker.xaml if it is outside of TimePicker.py. Although I placed it in the same folder as TimePicker.py on my desktop, as shown in the image below, I still encountered this error:

Furthermore, in the script below, UC, where TimePicker.xaml is inside TimePicker.py, the WPF form is displayed with the TimePicker control, but its events are not working!?

TimePicker + xaml

import clr
import os
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("System.Xml")
clr.AddReference("PresentationCore")
clr.AddReference("System.Windows")

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, TextBlock, Grid
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
from System.Xml import XmlReader
from System import DateTime
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from System.Windows import LogicalTreeHelper 
import wpf


script_path = os.path.dirname(__file__)
class TimePicker(UserControl):
    def __init__(self):
        self.hour = DateTime.Now.Hour
        self.min = DateTime.Now.Minute
        # Define the XAML string for the UserControl
        layout = '''
            <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                         Height="450" Width="800">
                <Grid>
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition/>
                        <ColumnDefinition Width="2*"/>
                        <ColumnDefinition/>
                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition/>
                        <RowDefinition/>
                    </Grid.RowDefinitions>
                    <RepeatButton x:Name="btnIncreaseHour"
                              Content="+" FontSize="24"
                              Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseHour"
                              Content="-" FontSize="24"
                              Grid.Row="1" 
                               Interval="100"/>
                    <RepeatButton x:Name="btnIncreaseMins"
                              Content="+" FontSize="24"
                              Grid.Column="2" 
                               Interval="100"/>
                    <RepeatButton x:Name="btnDecreaseMins"
                              Content="-" FontSize="24"
                               Grid.Column="2"
                              Grid.Row="1"
                               Interval="100" />
                    <TextBox x:Name="tbxTimePicker"
                        FontSize="42"  
                        Foreground="Blue"
                        Grid.Column="1"
                        Grid.RowSpan="2"
                        TextAlignment="Center"/>
                </Grid>
            </UserControl>'''
            
        wpf.LoadComponent(self, StringReader(layout))
        self.update_time_display()

    def update_time_display(self):
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnIncreaseHour_Click(self, sender, e):
        self.hour += 1
        if self.hour == 24:
            self.hour = 0
        self.update_time_display()

    def btnDecreaseHour_Click(self, sender, e):
        self.hour -= 1
        if self.hour == -1:
            self.hour = 23
        self.update_time_display()

    def btnIncreaseMins_Click(self, sender, e):
        self.min += 1
        if self.min == 60:
            self.min = 0
        self.update_time_display()

    def btnDecreaseMins_Click(self, sender, e):
        self.min -= 1
        if self.min == -1:
            self.min = 59
        self.update_time_display()

UC

import clr
from sys import path
sys.path.append(r"C:\Users\nono\Desktop\Time")
clr.AddReference("IronPython.Wpf")
clr.AddReference('PresentationFramework')
clr.AddReference("System.Xml")
clr.AddReference('PresentationCore')
clr.AddReference('WindowsBase')

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, Grid
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
from System.Xml import XmlReader
from System import DateTime
from System.Windows import RoutedEventArgs
from System.Windows.Controls import UserControl
from System.Windows import LogicalTreeHelper 
from System.Windows.Markup import XamlReader, XamlWriter
import wpf

if "TimePicker" in sys.modules:
    del sys.modules["TimePicker"]
    
from TimePicker import TimePicker
#from TimePicker import TimePicker  # Import the translated TimePicker class

class MainWindow(Window):
    def __init__(self):
        # Load the XAML layout
        xaml_content = """
            <Window 
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="MainWindow" Height="450" Width="800">
                <Grid x:Name="My_Grid">
                </Grid>
            </Window>"""
        wpf.LoadComponent(self, StringReader(xaml_content))
        self.populate_grid()

    def populate_grid(self):
        # Create a TabControl
        tab_control = TabControl()

        # Add a tab with the TimePicker control
        time_picker = TimePicker()
        tab_item_time_picker = TabItem()
        tab_item_time_picker.Header = "Time Picker"
        tab_item_time_picker.Content = time_picker
        tab_control.Items.Add(tab_item_time_picker)

        # Add example tabs
        for i in range(3):
            tab_item = TabItem()
            tab_item.Header = "Tab {}".format(i + 1)
            tab_item.Content = "Content {}".format(i + 1)
            tab_control.Items.Add(tab_item)

        self.My_Grid.Children.Add(tab_control)


main_window = MainWindow()
OUT = main_window.ShowDialog()

What am I missing that prevents me from loading TimePicker.xaml outside of TimePicker.py, and how can I fix the issue with TimePicker’s events?

Thanks.

c.poupin · January 9, 2025, 10:22am

see your file extension … TimePicker.xaml or TimePicker.xml ?

REDO10 · January 9, 2025, 2:02pm

Oh, my bad! I wrote my code with Notepad++, which saved the file with the xml extension instead of xaml, and I didn’t notice that! Now the code works perfectly.

@c.poupin do you have an idea how I can add the xaml extension in Notepad++ so that I can save my files with this extension by default in the future?
Here updated scripts:

TimePicker.xaml

<UserControl 
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
			 Height="450" Width="800">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition Width="2*"/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition/>
        </Grid.RowDefinitions>
        <RepeatButton x:Name="btnIncreaseHour"
                  Content="+" FontSize="24"
                  Click="btnIncreaseHour_Click"
                  Interval="100"/>
        <RepeatButton x:Name="btnDecreaseHour"
                  Content="-" FontSize="24"
                  Grid.Row="1" 
                  Click="btnDecreaseHour_Click"
                   Interval="100"/>
        <RepeatButton x:Name="btnIncreaseMins"
                  Content="+" FontSize="24"
                  Grid.Column="2" 
                  Click="btnIncreaseMins_Click"
                   Interval="100"/>
        <RepeatButton x:Name="btnDecreaseMins"
                  Content="-" FontSize="24"
                   Grid.Column="2"
                  Grid.Row="1"
                   Interval="100" Click="btnDecreaseMins_Click"/>
        <TextBox x:Name="tbxTimePicker"
            FontSize="42"  
            Foreground="Blue"
            Grid.Column="1"
            Grid.RowSpan="2"
            TextAlignment="Center"/>

    </Grid>
</UserControl>

TimePicker.py

import clr
import os
clr.AddReference("IronPython.Wpf")
clr.AddReference("PresentationFramework")
clr.AddReference("PresentationCore")
clr.AddReference("System.Windows")

from System.Windows import Application, Window
from System.IO import StringReader
from System import DateTime
from System.Windows.Controls import UserControl
import wpf


script_path = os.path.dirname(__file__)

class TimePicker(UserControl):
    def __init__(self):
        # Load the XAML layout
        xaml_path = os.path.join(script_path, 'TimePicker.xaml')
        wpf.LoadComponent(self, xaml_path)
        self.hour = DateTime.Now.Hour
        self.min = DateTime.Now.Minute
        self.update_time_display()

    def update_time_display(self):
        self.tbxTimePicker.Text = "{:02d} : {:02d}".format(self.hour, self.min)

    def btnIncreaseHour_Click(self, sender, e):
        self.hour += 1
        if self.hour == 24:
            self.hour = 0
        self.update_time_display()

    def btnDecreaseHour_Click(self, sender, e):
        self.hour -= 1
        if self.hour == -1:
            self.hour = 23
        self.update_time_display()

    def btnIncreaseMins_Click(self, sender, e):
        self.min += 1
        if self.min == 60:
            self.min = 0
        self.update_time_display()

    def btnDecreaseMins_Click(self, sender, e):
        self.min -= 1
        if self.min == -1:
            self.min = 59
        self.update_time_display()

UC2_Dynamo

import clr
from sys import path
sys.path.append(r"C:\Users\nono\Desktop\Time2")
clr.AddReference("IronPython.Wpf")
clr.AddReference('PresentationFramework')
clr.AddReference('PresentationCore')
clr.AddReference('WindowsBase')

from System.Windows import Application, Window
from System.Windows.Controls import TabControl, TabItem, TextBlock
from System.Windows import FontWeights, FontStyles
from System.IO import StringReader
import wpf

from TimePicker import TimePicker

class MainWindow(Window):
    def __init__(self):
        xaml_content = '''
            <Window 
                xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                Title="MainWindow" Height="450" Width="800">
                <Grid x:Name="My_Grid">
                </Grid>
            </Window>'''
        wpf.LoadComponent(self, StringReader(xaml_content))
        self.populate_grid()

    def populate_grid(self):
        # Create a TabControl
        tab_control = TabControl()

        symbol = {"x": "X", "y": "Y", "z": "Z"}
        for key in ["x", "y", "z"]:
            text_block = TextBlock()
            text_block.Text = "I'm a text block in : Tab {}".format(symbol[key])
            text_block.FontSize = 20
            text_block.FontWeight = FontWeights.UltraBold
            text_block.FontStyle = FontStyles.Italic
            tab_item = TabItem()
            tab_item.Header = "Tab {}".format(symbol[key])
            tab_item.Content = text_block
            tab_control.Items.Add(tab_item)
        
        # Create an instance object from the User Control TimePicker   
        time_picker = TimePicker()
        tab_item_time_picker = TabItem()
        tab_item_time_picker.Header = "Time Picker"
        tab_item_time_picker.Content = time_picker
        tab_control.Items.Add(tab_item_time_picker)
		
		# Add the TabControl to the Grid
        self.My_Grid.Children.Add(tab_control)


main_window = MainWindow()
OUT = main_window.ShowDialog()

Thanks.

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User Control WPF

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