Question

c#中怎样用StreamWriter写数据？然后再用streamReader读出啊？

Answer 1

写入/读出文本文件
public void Page_Load(Object src,EventArgs e)
{
StreamWriter rw = File.CreateText(Server.MapPath(".")+"\\myText.txt");
rw.WriteLine("test");
rw.WriteLine("test1");
rw.WriteLine("test2");
rw.Flush();
rw.Close();
}
打开文本文件
StreamReader sr = File.OpenText(Server.MapPath(".")+"\\myText.txt");
StringBuilder output = new StringBuilder();
string rl;
while((rl=sr.ReadLine())!=null)
{
output.Append(rl+"<br>");
}
lblFile.Text = output.ToString();
sr.Close();