写文件类

StreamReader streamReader = new StreamReader(模板位置及名称, Encoding.GetEncoding("utf-8"));

string ManageAspxText = streamReader.ReadToEnd();//加载模板数据

 ManageAspxText = ManageAspxText.Replace("{需要替换的参数}", 替换值);

 StreamWriter write = new StreamWriter(文件路径和文件名, false, Encoding.UTF8);

write.Flush();

write.WriteLine(ManageAspxText);

write.Close();