Thank you Rob Camick for your suggestion but I am not getting answer from that link also.
Actually I want Row color red when it is having value less than 40 in any column.
And the code which I have shown only colors first row only as first row having value less than 40 but other rows which are having value less than 40 are having background white only.
And I started loop from 1 position because my first column contains String value and other column contains Numeric value.
I am showing my code here may anyone can suggest me that why it is not working properly.
My Renderer file is having code as below.
So please give me suggestion so that I get rendering for each row.