Question

How to create, in code behind (with no XAML), a custom MessageBox (Dialog Boxes) in WPF C#?
I googled it and seems not to find a solution. I would want to have a MessageBox with Images and other Controls add to it.

Answer 1

You may use this solution:

    string messageBoxText = "Do you want to save changes?";
    string caption = "Your caption";
    MessageBoxButton button = MessageBoxButton.YesNoCancel;
    MessageBoxImage icon = MessageBoxImage.Warning;
    MessageBox.Show(messageBoxText, caption, button, icon);

look over this article, you my recode all Xaml into pure c# in Custom Dialog Boxes paragraph if you want.

or you may create your own Window and use MyWindow.ShowDialog().

Like in this code:

    Window wnd = new Window();
    Grid grid = new Grid();
    wnd.Height = 200;
    wnd.Width = 150;
    grid.RowDefinitions.Add(new RowDefinition {Height = new GridLength(100) });
    grid.RowDefinitions.Add(new RowDefinition {Height = GridLength.Auto });
    wnd.Content = grid;
    Image img = new Image();
    Button btn = new Button();
    btn.Content = "OK";
    btn.VerticalAlignment = VerticalAlignment.Bottom;
    Grid.SetRow(img, 0);
    Grid.SetRow(btn, 1); 
    grid.Children.Add(img);
    grid.Children.Add(btn);
    wnd.Owner = MyMainWindow;
    wnd.ShowDialog();