MainWindow child in wpf application

Question

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        System.Windows.Controls.Button b = new System.Windows.Controls.Button(); 
        System.Windows.Shapes.Rectangle r = new System.Windows.Shapes.Rectangle(); 
        r.Width = 40; 
        r.Height = 40; 
        r.Fill = System.Windows.Media.Brushes.Black; 
        b.Content = r; // Make the square the content of the Button
        this.AddChild(b);
    }
}

I have code for button from some WPF 4 book, and i want to display from here ( not from XAML), but when i want to add button 'b' as a child of main window i get exception and info : Content of a ContentControl must be a single element.

How can i display it in c#?

I know already that sometimes XAML is best solution, but i want to know this because im curious. — Kamiel, Feb 28 '15 at 10:02

score 0 · Answer 1 · answered Feb 28 '15 at 10:27

0

As you say this line

this.AddChild(b);

wont work as the error points out it requires a single element (ie Grid, StackPanel)

Give your Grid in xaml a name MainWindow.xaml

 <Grid x:Name="root">        
</Grid>

and add your button to the Grid in MainWindow.xaml.cs

 //this.AddChild(b);   //wont work cant add button to this(MainWindow)
 root.Children.Add(b); //adds button to the Grid of MainWindow

answered Feb 28 '15 at 10:27

SWilko

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So MainWindow can only have one child, and in this case it is Grid, yes? – Kamiel Feb 28 '15 at 11:11
correct.. you could also use StackPanel, Canvas etc any of the panels – SWilko Feb 28 '15 at 11:21

MainWindow child in wpf application

1 Answers1