打混中

FileInfo src =new FileInfo("test.txt");
TextReader r = src.OpenText();

string line ;
while((line = r.ReadLine()) != null)
{
lab.Text+=line+"\n";
}
r.Close();StreamWriter sw = File.AppendText("TestFile.txt");string line = tbnum.Text + "\t" + tbname.Text + "\t" + tbqu.Text+"\n" ;sw.WriteLine(line); sw.Close();tbnum.Text = tbname.Text = tbqu.Text ="";