I'm writing a little game engine in C#, this is the sprite class in it's early stages

sprite.cs

//Maybe use Bitmap
private static Image[] frameArray;
public static Image active_frame;
public static int active_frame_number;
  
public sprite(Image[] frame_array)
{
	frameArray = frame_array;
  	active_frame_number = 0
  	active_frame = frameArray[active_frame_number];
}

public static void nextFrame()
{
	active_frame_number += 1;
}

public static void previousFrame()
{
	active_frame_number -= 1;
}

public static void preciseFrame(int frame_number)
{
	active_frame_number = frame_number;
}

public static void firstFrame()
{
	active_frame_number = 0;
}

public static void lastFrame()
{
	active_frame_number = frameArray.Length - 1;
}

public static void animate()
{
	active_frame = frameArray[active_frame_number];
}