OpenFileDialog ofd = new OpenFileDialog();
string s;
ofd.Filter = "text files (*.txt)|*.txt";
ofd.FilterIndex = 2;
ofd.RestoreDirectory = true;
if (ofd.ShowDialog() == DialogResult.OK)
{
s = ofd.FileName;
FarPoint.Win.Spread.Model.CellRange cr = new FarPoint.Win.Spread.Model.CellRange(0, 0, 3, 3);
fpSpread1.ActiveSheet.LoadTextFileRange(s, cr,FarPoint.Win.Spread.TextFileFlags.None);
//fpSpread1.ActiveSheet.LoadTextFileRange(s, cr, FarPoint.Win.Spread.TextFileFlags.None, "\r", ",", "", System.Text.Encoding.ASCII);
//fpSpread1.ActiveSheet.LoadTextFileRange(s, cr, FarPoint.Win.Spread.TextFileFlags.None, "\r", ",", "");
}