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    <p>I prefer to take an approach using dialogs that doesn't lock up the application, and moves away from the more traditional Win32 Dialog.</p> <p><strong>Example</strong></p> <p><img src="https://i.stack.imgur.com/nNyo3.png" alt="Input Dialog"></p> <p><strong>Input Dialog Hidden</strong></p> <p><img src="https://i.stack.imgur.com/KMwaN.png" alt="Input Dialog not showing."></p> <p>In this example I use a simplified version of the <a href="http://en.wikipedia.org/wiki/Model_View_ViewModel" rel="noreferrer">MVVM</a> based solution I am using for my applications. It may not be pretty, but should give you a solid idea on the basics behind it.</p> <p><strong>The XAML:</strong></p> <pre><code>&lt;Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"&gt; &lt;Grid&gt; &lt;StackPanel&gt; &lt;Button Content="Cool Button" x:Name="CoolButton" Click="CoolButton_Click"/&gt; &lt;ListBox x:Name="MyListBox"/&gt; &lt;/StackPanel&gt; &lt;!-- It's important that this is in the end of the XAML as it needs to be on top of everything else! --&gt; &lt;Grid x:Name="InputBox" Visibility="Collapsed"&gt; &lt;Grid Background="Black" Opacity="0.5"/&gt; &lt;Border MinWidth="250" Background="Orange" BorderBrush="Black" BorderThickness="1" CornerRadius="0,55,0,55" HorizontalAlignment="Center" VerticalAlignment="Center"&gt; &lt;StackPanel&gt; &lt;TextBlock Margin="5" Text="Input Box:" FontWeight="Bold" FontFamily="Cambria" /&gt; &lt;TextBox MinWidth="150" HorizontalAlignment="Center" VerticalAlignment="Center" x:Name="InputTextBox"/&gt; &lt;StackPanel Orientation="Horizontal" HorizontalAlignment="Center"&gt; &lt;Button x:Name="YesButton" Margin="5" Content="Yes" Background="{x:Null}" Click="YesButton_Click"/&gt; &lt;Button x:Name="NoButton" Margin="5" Content="No" Background="{x:Null}" Click="NoButton_Click" /&gt; &lt;/StackPanel&gt; &lt;/StackPanel&gt; &lt;/Border&gt; &lt;/Grid&gt; &lt;/Grid&gt; </code></pre> <p></p> <p>It's very easy to show this dialog as you only need to set the Visibility of the <code>InputBox</code> grid to visible. You then simply handle the Yes / No buttons and get the Input text from the TextBox. </p> <p>So instead of using code that requires <code>ShowDialog()</code>, you simply set the <code>Visibility</code> option to <code>Visible</code>. There are still some things to do in this example that we will handle in code-behind, like for example clearing the InputText box after handling the Yes/No Button clicks.</p> <p><strong>The code-behind:</strong></p> <pre><code>namespace WpfApplication1 { /// &lt;summary&gt; /// Interaction logic for MainWindow.xaml /// &lt;/summary&gt; public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void CoolButton_Click(object sender, RoutedEventArgs e) { // CoolButton Clicked! Let's show our InputBox. InputBox.Visibility = System.Windows.Visibility.Visible; } private void YesButton_Click(object sender, RoutedEventArgs e) { // YesButton Clicked! Let's hide our InputBox and handle the input text. InputBox.Visibility = System.Windows.Visibility.Collapsed; // Do something with the Input String input = InputTextBox.Text; MyListBox.Items.Add(input); // Add Input to our ListBox. // Clear InputBox. InputTextBox.Text = String.Empty; } private void NoButton_Click(object sender, RoutedEventArgs e) { // NoButton Clicked! Let's hide our InputBox. InputBox.Visibility = System.Windows.Visibility.Collapsed; // Clear InputBox. InputTextBox.Text = String.Empty; } } } </code></pre> <p>The code-behind could easily be done using a Dependency, or as ViewModel logic in this case, but for simplicity I kept it in the code-behind.</p>
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    1. COYup I got the idea. Thank You!
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    2. COHow to you prevent the 'InputBox' control from losing focus while it is shown?
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    3. CO@Marc I have created a custom control based on the ContentControl element for my dialog, and inside that I override OnVisibleChanged, and if the dialog is visible I set `Keyboard.Focus(textBox);`.
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