/* index.OnClick */
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void OnClick(object sender, EventArgs args)
{
var label = new Label
{
Text = "abcde",
};
if ((x / 10) % 2 == 0)
{
// CanvasAppend(label, x, 0, 50, 50);
}
else
{
// CanvasAppend(label, 0, x, 50, 50);
}
var box = new MyBox
{
BackgroundColor = Color.Black,
};
CanvasAppend(box, 40, 40, 50, 50);
x += 50;
y += 50;
}
public MainPage()
{
InitializeComponent();
Label label = new Label
{
Text = "Hello Xamarin!!",
};
Label label2 = new Label
{
Text = "Hello Xamarin2!!",
};
// 追加方法１
MainLayout.Children.Add(label,
Constraint.RelativeToParent(parent => (parent.Width / 2) - (label.Width / 2)),
Constraint.RelativeToParent(parent => (parent.Height / 2) - (label.Height / 2)),
Constraint.RelativeToParent(parent => parent.Width),
Constraint.Constant(50));
// 追加方法２
Expression <Func <Rectangle> > ex = () => new Rectangle(200, 200, 50, 50);
MainLayout.Children.Add(label2, ex);
var box = new MyBox
{
Color = Color.Red,
WidthRequest = 50,
HeightRequest = 50,
};
MainLayout.Children.Add(box, () => new Rectangle(50, 50, 50, 50));
var list = new List <int>
{
10, 33, 123, 2, 1, 30,
};
var result = from x in list
where x % 2 == 0
orderby x descending
select x;
label.Text = "";
foreach (var s in result.ToArray())
{
label.Text += s + ", ";
}
}