StreamReader sr = new StreamReader(SelectFileName, Encoding.Default);
int LineCount = 0;
const int MaxLine=50;
while (true){
string FileLine = sr.ReadLine();
if (++LineCount > MaxLine || FileLine == null ) break;
//MessageBox.Show(FileLine);正常
FileView.RowCount = LineCount+1;
FileView.Rows[LineCount-1].Cells[0].Value = LineCount.ToString();
FileView.Rows[LineCount-1].Cells[1].Value = FileLine;//吃掉了TAB字符
FileLine = null;
}