How can I dynamically create and display buttons in a WPF window?

Question

WPF

How to dynamically create and display buttons in a window? The window was created via "Project" - "Add window".
Everywhere it is suggested to use "this.Controls.Add(button)". But:
'MainWindow' does not contain a 'Controls' definition, and no accessible extension method 'Controls' could be found that takes the type 'MainWindow' as the first argument (perhaps a using directive or an assembly reference is missing).
And in general it is not clear what this refers to and where it all happens.

/**********************/
// Открытие окна и генерация кнопок происходит по нажатию кнопку, т.е это событие
            int itemsCount = 5;
            int buttonMargin= 20;
            int left = 10;
            int top = 10;
            for(int i=1; i != itemsCount; i++)//Вывод кнопок в цикле
            {
                System.Windows.Forms.Button button = new System.Windows.Forms.Button(); //Создание кнопки
                button.Left = left;
                button.Name = "TEST";
                button.Top = top + buttonMargin;
                this.Controls.Add(button);//?
                top += button.Height;
            }
Window1 win = new Window1();
win.Show();
/**********************/

Answer 1

Use ItemsPresenter, override ItemTemplate.
But in general, it's even better to switch to the MVVM pattern and do it all through Binding.