title: vb.net how to convert picturebox to bitmap
body: <p>I want pixel color value of the picturebox 
  I assigned text to the picturebox &amp; now want to get the value of color of each pixel
  What is method of picturebox or i should convert it to bitmap? How?
  in vb6 there is getpixel() method to get color value
  What is in .net?</p>