我有一个需求，允许用户点击画布，每次创建一个矩形和8个文本框，输入矩形的尺寸，这些框会相对于矩形边框进行定位，所以这里会有一个List数组，其中列表中的每一项都是这些盒子的集合。画布可以让我正常地画一个矩形。我发现动态收集这些数据的唯一合适方法是“网格”，如下所示：

var g1 = new Grid();
g1.Width = 100;
g1.Height = 100;
Canvas.SetLeft(g1, 10);
Canvas.SetTop(g1, 10);

Rectangle rectangle = new Rectangle
{
    Width = 20,
    Height = 30,
    Fill = red,
    StrokeThickness = 2,
    Stroke = Brushes.Black
};
Canvas.SetLeft(rectangle, 10);
Canvas.SetTop(rectangle, 10);
    
g.Children.Add(rectangle);
LayoutCanvas.Children.Add(g);

但是如果我现在需要添加盒子，所有盒子都会转到网格的中心。

var txt = new TextBox();
txt.Text = "New Text1";
txt.Width = 30;
txt.Height = 30;
Canvas.SetLeft(txt, 20);
Canvas.SetTop(txt, 30);
g1.Children.Add(txt);

为了解决这个问题，我必须用途：

g1.ColumnDefinitions.Add(new ColumnDefinition());
g1.RowDefinitions.Add(new RowDefinition());
g1.RowDefinitions.Add(new RowDefinition());
g1.RowDefinitions.Add(new RowDefinition());

但我的应用程序不需要网格中的行和列的这种组织，需要它是完全形状和完全动态的，最好甚至没有XAML。我尝试了其他对象，如StackPanel，但它们都没有太大的区别。
解决方案：我现在有这样的代码：

Grid DynamicGrid = new Grid();
DynamicGrid.HorizontalAlignment = HorizontalAlignment.Left;
DynamicGrid.VerticalAlignment = VerticalAlignment.Stretch;
DynamicGrid.ShowGridLines = true;
DynamicGrid.Background = new SolidColorBrush(Colors.LightSteelBlue);

var c1 = new Canvas();
var c2 = new Canvas();

//--------------------- Canvas1 Children --------------------->
Rectangle c1Rectangle = new Rectangle
{
    Width = 100,
    Height = 100,
    Fill = new SolidColorBrush(Color.FromRgb(255, 0, 0)),
    StrokeThickness = 2,
    Stroke = Brushes.Black
};
Canvas.SetLeft(c1Rectangle, 0);
Canvas.SetTop(c1Rectangle, 0);

TextBlock c1Textbox = new TextBlock();
c1Textbox.Width = 50;
c1Textbox.Height = 50;
c1Textbox.Text = "Text1";
c1Textbox.FontSize = 14;
c1Textbox.FontWeight = FontWeights.Bold;
c1Textbox.Foreground = new SolidColorBrush(Colors.White);
c1Textbox.VerticalAlignment = VerticalAlignment.Top;
Canvas.SetLeft(c1Textbox, 10);
Canvas.SetTop(c1Textbox, 10);

//--------------------- Canvas2 Children --------------------->
Rectangle c2Rectangle = new Rectangle
{
    Width = 100,
    Height = 100,
    Fill = new SolidColorBrush(Colors.LightBlue),
    StrokeThickness = 2,
    Stroke = Brushes.Red
};
Canvas.SetLeft(c2Rectangle, 420);
Canvas.SetTop(c2Rectangle, 220);

TextBlock c2Textbox = new TextBlock();
c2Textbox.Width = 50;
c2Textbox.Height = 50;
c2Textbox.Text = "Text2";
c2Textbox.FontSize = 14;
c2Textbox.FontWeight = FontWeights.Bold;
c2Textbox.Foreground = new SolidColorBrush(Colors.Black);
c2Textbox.VerticalAlignment = VerticalAlignment.Top;
Canvas.SetLeft(c2Textbox, 440);
Canvas.SetTop(c2Textbox, 240);

c1.Children.Add(c1Rectangle);
c1.Children.Add(c1Textbox);
c2.Children.Add(c2Rectangle);
c2.Children.Add(c2Textbox);

DynamicGrid.Children.Add(c1);
DynamicGrid.Children.Add(c2);

this.Content = DynamicGrid;
this.Show();