How to retrieve data from grid view in .NET

Question

Hello,

I have been trying to get the values from DataGridView. My stupid logic works a bit when accessing the individual cells of the Data Grid Row.
This is the the code that I am using.


private void btn_fetch_Click(object sender, EventArgs e)
       {
           string result = "";
           string part1 = "";
           string part2 = "";


           for (int i = 1; i <= DGV_CsvFile.Rows.Count; i++)
           {
               part1 = DGV_CsvFile.Rows[i].Cells[0].Value.ToString();
               part2 = DGV_CsvFile.Rows[i].Cells[1].Value.ToString();
               result =result + part1+" : "+part2+"\n";
           }
                       
       }



But the problem comes when it completes its iteration, the following exception comes on my face. :(
"Object reference not set to an instance of an object."
and it selects the first line of the loop.
Need urgent help fellows.
Thanx in advance.