Dynamic Window with child windows in WPF

Question

Hi,
How to implement dynamic window in wpf. I want to dynamically height width set of main parent window according to child window

Answer 1

The following is an example of the parent window changing the size according to the size of the child window, you could try to refer to the following code.
MainWindow.xaml:

<Window x:Class="DynamicParentWindowBaseChildWindow.MainWindow"  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
        xmlns:local="clr-namespace:DynamicParentWindowBaseChildWindow"  
        mc:Ignorable="d"  
        Title="MainWindow" >  
    <Grid>  
        <Button Content="Open Child Window" Height="65" HorizontalAlignment="Left" Margin="89,171,0,0" Name="button1" VerticalAlignment="Top" Width="316" Click="button1_Click" />  
    </Grid>  
</Window>  

MainWindow.xaml.cs:

public partial class MainWindow : Window  
  {  
    ChildWindow Cw= new ChildWindow();  
    public MainWindow()  
    {  
      InitializeComponent();  
      App.Current.MainWindow.SizeChanged+= UpdateSize;  
    }  
    private void UpdateSize(object sender, EventArgs e)  
    {  
      this.Width = Cw.ActualWidth;  
      this.Height = Cw.ActualHeight;  
      this.UpdateLayout();  
    }  
    private void button1_Click(object sender, RoutedEventArgs e)  
    {  
        
      Cw.ShowInTaskbar=false;  
      Cw.Show();  
      
    }  
  }  

ChildWindow.xaml:

<Window x:Class="DynamicParentWindowBaseChildWindow.ChildWindow"  
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"  
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"  
        xmlns:local="clr-namespace:DynamicParentWindowBaseChildWindow"  
        mc:Ignorable="d"  
        Title="ChildWindow" Height="450" Width="800">  
    <Grid>  
        <Label Content="child Window" Height="28" HorizontalAlignment="Left" Margin="12,22,0,0" Name="label1" VerticalAlignment="Top" Width="254" />  
      
    </Grid>  
</Window>  

The result:

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