static DatePicker()
{
var gridFactory = new FrameworkElementFactory(typeof(Grid));
var row0Factory = new FrameworkElementFactory(typeof(RowDefinition));
row0Factory.SetValue(RowDefinition.HeightProperty, GridLength.Auto);
gridFactory.AppendChild(row0Factory);
var row1Factory = new FrameworkElementFactory(typeof(RowDefinition));
row1Factory.SetValue(RowDefinition.HeightProperty, GridLength.Auto);
gridFactory.AppendChild(row1Factory);
var buttonFactory = new FrameworkElementFactory(typeof(Button))
{
Name = ElementButton
};
gridFactory.AppendChild(buttonFactory);
var presenterFactory = new FrameworkElementFactory(typeof(ContentPresenter))
{
Name = ElementPresenter
};
presenterFactory.SetValue(Grid.RowProperty, 1);
gridFactory.AppendChild(presenterFactory);
DefaultTemplate = new ControlTemplate {
VisualTree = gridFactory
};
DefaultTemplate.SetValue(ControlTemplate.TargetTypeProperty, typeof(DatePicker));
}