C#追加文件
StreamWriter sw = File.AppendText(Server.MapPath(".")+"file://myText.txt/");
sw.WriteLine("追逐理想");
sw.WriteLine("kzlll");
sw.WriteLine(".NET笔记");
sw.Flush();
sw.Close();
C#拷贝文件
string OrignFile,NewFile;
OrignFile = Server.MapPath(".")+"file://myText.txt/";
NewFile = Server.MapPath(".")+"file://myTextCopy.txt/";
File.Copy(OrignFile,NewFile,true);
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