WPF--动态添加控件、访问控件

//WPF窗口采用默认的Grid布局控件，其“Name”值为“grid1”，在“grid1”中添加三个Button按钮。动态添加控件并访问这些控件的代码如下：

private void button1_Click_1(object sender, RoutedEventArgs e)
    {
        //添加第一个文本框
        TextBox tb1 = new TextBox();
        tb1.Name = "myTextBox1";

        tb1.Text = "第一个文本框";
        tb1.Width = ;
        tb1.Height = ;

        tb1.HorizontalAlignment = HorizontalAlignment.Left;
        tb1.VerticalAlignment = VerticalAlignment.Top;
        tb1.Margin = new Thickness(, , , );

        grid1.Children.Add(tb1);

        //添加第二个文本框
        TextBox tb2 = new TextBox();
        tb2.Name = "myTextBox2";

        tb2.Text = "第二个文本框";
        tb2.Width = ;
        tb2.Height = ;

        tb2.HorizontalAlignment = HorizontalAlignment.Left;
        tb2.VerticalAlignment = VerticalAlignment.Top;
        tb2.Margin = new Thickness(, , , );

        grid1.Children.Add(tb2);

    }

    private void button2_Click(object sender, RoutedEventArgs e)
    {
        //访问添加的全部文本框
        foreach (var c in grid1.Children)
        {
            if (c is TextBox)
            {
                TextBox tb = (TextBox)c;
                MessageBox.Show(tb.Text);
            }
        }

    }

    private void button3_Click(object sender, RoutedEventArgs e)
    {
        //访问添加的某个文本框
        foreach (var c in grid1.Children)
        {
            if (c is TextBox)
            {
                TextBox tb = (TextBox)c;
                if (tb.Name == "myTextBox2")
                {
                    MessageBox.Show(tb.Text);
                }
            }
        }
    }