Question

What do I need to do to the following code so that the cursor is blinking in the second textbox when the window appears?

XAML:

<Window x:Class="TestFocksdfj.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <StackPanel HorizontalAlignment="Left" Margin="10">
        <ContentControl x:Name="FormArea"/>
    </StackPanel>
</Window>

Code Behind:

using System.Windows;
using System.Windows.Controls;

namespace TestFocksdfj
{
    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();

            StackPanel sp = new StackPanel();

            for (int i = 0; i < 3; i++)
            {
                TextBox tb = new TextBox();
                tb.Width = 200;
                tb.Margin = new Thickness { Bottom = 3 };
                if (i == 1)
                    tb.Focus();
                sp.Children.Add(tb);
            }

            FormArea.Content = sp;
        }
    }
}

Answer 1

After you’ve called FormArea.Content = sp;, you can call sp.Children[1].Focus(); to give the seconde Textbox focus.

Like this:

public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
            StackPanel sp = new StackPanel();

            for (int i = 0; i < 3; i++)
            {

                TextBox tb = new TextBox();
                tb.Width = 200;
                tb.Margin = new Thickness { Bottom = 3 };
                sp.Children.Add(tb);
            }
            FormArea.Content = sp;
            sp.Children[1].Focus();
        }
    }