protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
var relLayout = new Android.Widget.RelativeLayout(this);
tvX = new TextView(this);
tvY = new TextView(this);
tvX.Text = "textview xx";
tvY.Text = "textview yy";
mChart = new BarChart(this);
mChart.SetDrawBarShadow(false);
mChart.SetDrawValueAboveBar(true);
mChart.Description.Enabled = true;
mChart.SetMaxVisibleValueCount(60);
mChart.SetPinchZoom(true);
mChart.SetBackgroundColor(Android.Graphics.Color.White);
setData(12, 50);
relLayout.AddView(mChart, 650, 1000);
SetContentView(relLayout);
}