Compare cells in 2 datagridviews

Question

Hi guys,
I have 2 datagridviews(dgv1 & dgv2) populated with rows with the same columns.
I want to have the row from dgv2 cycle through dgv1 and if a cell is more than that of the row in dgv2 I want to color the background of the cell to mark that it exceeded.
I did get it to work by using foreach and while, but it takes sooooo long to process. Any way I can compare cells that might be quicker. Because atm isong once cell at a time scrolling through all 100 dgv1 rows and then moving to the next cell is taking a long time and I'm sure im beign inneficient.
while  (currentCell
{
foreach  (DataGridViewRow rTestData  in  dgvSampleTestData.Rows)
{
//Test and chenge backgroun color
}
currentCell++;
}

Amit Gupta · Answer

You can use ParallelForeach loop that can perform much better than normal foreach loop