OpenFileDialog op = new OpenFileDialog();
op.Filter = "Excel Files (*.xls;*.xlsx;)|*.xls;*.xlsx;|" + "All Files (*.*)|*.*";
op.RestoreDirectory = true;
op.FilterIndex = 2;
op.Multiselect = false;
op.Title = "Select Excel File";
if(op.ShowDialog() == DialogResult.OK)
{
}
this is not working. why?