async Task CanvasDraw() { await ctx.SetProperty("fillStyle", "black"); await ctx.Invoke <object>("fillRect", 0, 0, canvasWidth, canvasHeight); await ctx.SetProperty("fillStyle", "#f00"); await ctx.Invoke <object>("beginPath"); await ctx.Invoke <object>("arc", X, Y, RADIUS, 0, degreesToRadians(360), true); await ctx.Invoke <object>("fill"); }