title: Datagridview Change cell color of non empty cell
body: <p>Im creating a calendar appointment application, Id like to change the color of the datagridview of the non empty cell (those with value) upon loading/opening the application.
  my application already handles how to load the data.
  i'm able to change the color of the non empty cell but after closing and opening again the color is back to default.</p>
  
  <p>Im not sure with the correct syntax , or if i need to go through all the cells like  do a loop for the entire table and change the cell back color.</p>
  
  <p>VB.net 2012</p>
  
  <p>so my questions is like or the loop i wanted to attain is ;</p>
  
  <p>if the cell is not empty then change cell.color
  thanks for any help.</p>