title: Changing Colour of the Cell in WP7
body: <p>i m having a problem in changing the color of cell in a datagrid in windows phone 7 application development,the problem precisely is when a new value is loaded in the cell it should check with the old value in cell and if the old value greater than new value it has to display a red color , if not it should display in blue color. In both the cases the new value will be Updated ,based on the previous value the color of cell should be updated. Pls Help me out.
  I have tried in event currentvalue it hasnt worked. Is there any event which would help me get the old value and the current value of a cell in a datagrid?</p>