I want to ask you what should i do to resize (rectangle) smoothly and fade (grid) in and out? I'm using C#, Visual Studio 2015.
Make a loop of some sort and add
Brush brush = new SolidBrush(Color.FromArgb(alpha, red, green, blue))
where alpha goes from 0 to 255, so a value of 128 for your alpha will give you 50% opactity.
Then you can apply the brush
myRectangle.FillRectangle(brush, new Rectangle(0,0,200,300));