C# – WPF: How to dynamically Add Controls in dynamically created WPF Window

cwpf

I want to add a WPF Input Box in my Project in C#. I got a WinForm one from InputBox in C# but it has Winform look and feel. So i was recreating it in WPF. I have created all the controls (Label, Button, Textbox) but i am unable to add them to my window.

static Window winInputDialog

The Window is showing through ShowDialog but without controls.

Best Answer

There are two ways to get controls in your window:

Do the whole designing stuff in the Designer of VisualStudio

Add the controls by code. Here is a short, simple sample of creating a window and putting controls in it:

var window = new Window();
var stackPanel = new StackPanel { Orientation = Orientation.Vertical };
stackPanel.Children.Add(new Label { Content = "Label" });
stackPanel.Children.Add(new Button { Content = "Button" });
window.Content = stackPanel;

Related Solutions

R – Question System.ExecutionEngineException while loading WPF window from Windows Form

The default Wpf applicationshutdown behavior (specified on the "Application" tab in project properties in VS or using the ShutdownMode attribute in Application.Xaml) is "On Last Window Close". This means that when you close the Wpf window you create, Wpf shuts down the application framework so any subsequent window creations will throw an exception.

You can avoid this problem by setting the Shutdown mode to "On explicit shutdown" ("OnExplicitShutdown" in Xaml). You will then need to manually call Application.Current.Shutdown explicitly when you want the app to terminate (e.g. when the winforms form is closed).

C# – Find all controls in WPF Window by type

This should do the trick

public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
    if (depObj == null)
        return;
    
    for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
    {
        var child = VisualTreeHelper.GetChild(depObj, i);

        if (child != null && child is T)
            yield return (T)child;
                
        foreach (T childOfChild in FindVisualChildren<T>(child))
            yield return childOfChild;
    }
}

then you enumerate over the controls like so

foreach (var tb in FindVisualChildren<TextBlock>(window))
{
    // do something with tb here
}

Best Answer

Related Solutions

R – Question System.ExecutionEngineException while loading WPF window from Windows Form

C# – Find all controls in WPF Window by type

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