怎么创建一个txt的文本文件,并向里面写数据?

Question

怎么创建一个文本文件,文件名自己命名,同时向里面写数据.

Answer 1

http://battler.cnblogs.com/archive/2005/05/24/161293.html

Answer 2

protected void Write_Txt(string FileName)
    {
        Encoding code = Encoding.GetEncoding("gb2312");
        string htmlfilename = HttpContext.Current.Server.MapPath("/txt/" + FileName + ".txt");
        string str = "";
        StreamWriter sw = null;
        {
            try
            {
                sw = new StreamWriter(htmlfilename, false, code);
                sw.Write(str);
                sw.Flush();
            }
            catch { }
        }
        sw.Close();
        sw.Dispose();
    }

Answer 3

http://www.cftea.com/c/2007/06/OWNMPDV89NDYMAIM.asp

Answer 4

using(StreamWriter sw =  new StreamWriter(path))
{
                sw.Write(str);
                sw.Flush();
 }

Answer 5

FileStream objFileStream;
StreamWriter objStreamWriter;
objFileStream = new FileStream(“D:\\test.txt”, FileMode.OpenOrCreate, FileAccess.Write);
objStreamWriter = new StreamWriter(objFileStream, System.Text.Encoding.Unicode);
objStreamWriter.WriteLine("nihao");
objStreamWriter.Close();
objFileStream.Close();试试看

Answer 6

using System;
using System.IO;class Test 
{
    public static void Main() 
    {
        // Create an instance of StreamWriter to write text to a file.
        // The using statement also closes the StreamWriter.
        using (StreamWriter sw = new StreamWriter("TestFile.txt")) 
        {
            // Add some text to the file.
            sw.Write("This is the ");
            sw.WriteLine("header for the file.");
            sw.WriteLine("-------------------");
            // Arbitrary objects can also be written to the file.
            sw.Write("The date is: ");
            sw.WriteLine(DateTime.Now);
        }
    }
}

Answer 7

public void WriteLogFile(String sContent,String sSvrPath)
{
String sLogPath;
String sFileName;
String sTime;
StreamWriter SW;
sFileName = DateTime.Now.Date.ToString("yyyyMMdd") + ".txt";
sLogPath = sSvrPath + @"file\" + sFileName;
SW = File.CreateText(sLogPath);
SW = File.AppendText(sLogPath);

sTime = DateTime.Now.TimeOfDay.ToString();
SW.Write("["+sTime+"]  ");
SW.WriteLine(sContent);
SW.Flush();
SW.Close(); }

Answer 8

基本的文件操作都不知道吗？看看MSDN吧

Answer 9

<?
//基于文件的计数器
if(!file_exists("count.txt"))//如计数文件不存在，创建之
{
    exec("echo 0>count.txt");
}$fp=fopen("count.txt","r+"); //以可读写方式打开计数文件
$fs=filesize("count.txt");//得到文件大小
$cont=fgets($fp,$fs+1);//根据文件大小取出数据$cont+=1;//记录数加一
fseek($fp,0);//移动文件指针
fputs($fp,$cont);//将新纪录数写到文件指针
fclose($fp);//关闭计数文件echo"该页面已被访问 $cont 次！";//输出计数
?>

Answer 10

Encoding GB2312= Encoding.GetEncoding("gb2312");//设置一下编码格式
StreamWriter  sw = new StreamWriter(要写入的文件路径, false, GB2312);
sw.Write(str);
sw.Flush();
sw.Close();
sw.Dispose();

Answer 11

System.IO.File.Create(path);
System.IO.File.WriteAllText(path, content);

Answer 12

引入命名空间using System.Text;
using System.IO;
代码如下  放置一个按钮和两个文本框
protected void Button1_Click(object sender, EventArgs e)
    {
        string name = this.txtname.Text.Trim().ToString();
        string content = this.txtcontent.Text.Trim().ToString();
        Write_Txt(name,content);
    }    protected void Write_Txt(string FileName,string content)
    {
        Encoding code = Encoding.GetEncoding("gb2312");
        string htmlfilename = HttpContext.Current.Server.MapPath("~/" + FileName + ".txt");
        string str = "";
        StreamWriter sw = null;
        {
            try
            {
                sw = new StreamWriter(htmlfilename, false, code);
                sw.Write(content);
                sw.Flush();
            }
            catch { }
        }
        sw.Close();
        sw.Dispose();
    }

Answer 13

static public class Logs
    {
        static object o = new object();
        readonly static string _logpath = System.Configuration.ConfigurationManager.AppSettings["LogPath"];
        public enum LogTypeEnum
        {
            SystemLog,
            UserLoginLog,
            OtherLog
        }
        /// <summary>
        /// 写Log文件
        /// </summary>
        /// <param name="lt">类型</param>
        /// <param name="LogsContent">内容</param>
        public static void WriterLogs(LogTypeEnum lt, string LogsContent)
        {
            lock (o)
            {
                string sql = "INSERT INTO SysLogs(LogType,Content) VALUES(@LogType,@Content)";
                using (System.Data.SqlClient.SqlCommand cmd = new System.Data.SqlClient.SqlCommand(sql))
                {
                    cmd.Parameters.Add(DataAccess.CreateSqlParameterVarChar("@LogType", Enum.GetName(typeof(LogTypeEnum), lt), 50));
                    cmd.Parameters.Add(DataAccess.CreateSqlParameterNText("@Content", LogsContent));
                    DataAccess.ExcuteCmd(cmd);
                }
                WriterLogsByTxt(lt, LogsContent);
                //WriterXml(lt, LogsContent);
            }
        }
        static public void WriterLogs(LogTypeEnum lt, Exception ex)
        {
            WriterLogs(lt, ex.Message);
        }
        static void WriterLogsByTxt(LogTypeEnum lt, string LogsContent)
        {
            DirectoryInfo dir = new DirectoryInfo(_logpath);
            try
            {
                if (!dir.Exists)
                    dir.Create();
                string filename = "NewJxc_" + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + ".log";
                FileInfo file = new FileInfo(dir + filename);
                if (!file.Exists)
                    file.Create();                using (FileStream fs = file.OpenWrite())
                {
                    using (StreamWriter sw = new StreamWriter(fs))
                    {
                        sw.BaseStream.Seek(0, SeekOrigin.End);
                        sw.Write("{0}[{1}]:{2}", DateTime.Now.ToLongTimeString(), Enum.GetName(typeof(LogTypeEnum), lt), LogsContent);
                        sw.Write("\n");
                        sw.Flush();
                    }
                }
            }
            catch 
            {
                ;
            }
        }
        static string FileName
        {
            get
            {
                DirectoryInfo dir = new DirectoryInfo(_logpath);
                if (!dir.Exists)
                    dir.Create();
                string filename = "log_NewJxc_" + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + ".xml";
                filename = dir + filename;
                FileInfo f = new FileInfo(filename);
                if (!f.Exists)
                    f.Create();
                return filename;
            }
        }
        public static string ReadLogFile(string filename)
        {
            string fullname = _logpath + filename;
            FileStream fs = new FileStream(fullname, FileMode.OpenOrCreate, FileAccess.Read);
            System.Text.StringBuilder output = new System.Text.StringBuilder();
            output.Length = 0;
            StreamReader read = new StreamReader(fs);
            read.BaseStream.Seek(0, SeekOrigin.Begin);
            while (read.Peek() > -1)
                output.Append(read.ReadLine() + "\n");
            read.Close();            return output.ToString();
        }
        public static FileInfo[] GetLogFiles()
        {
            DirectoryInfo dir = new DirectoryInfo(_logpath);
            return dir.GetFiles("*.log");
        }
    }

Answer 14

using System.IO;                //检查目录是否存在，如果不存在则创建。                if (!Directory.Exists(fileDir))
                {
                    Directory.CreateDirectory(fileDir);
                }                //检查文件是否存在                if (File.Exists(file))
                {
                    //执行需要的操作
                }