Call this method.
using System.Linq;
private void readCSV()
{
string csvFile = @"C:\Documents and Settings\aavprasad\Desktop\test.csv";
string[] lines = File.ReadAllLines(csvFile);
var values = lines.Select(l => new { FirstColumn = l.Split(',').First(), Values = l.Split(',').Skip(1).Select(v => int.Parse(v)) });
GridView.DataSource = values.ToList();
GridView.DataBind();
}