请问怎样把一个数值保存到TXT文本里边去

Question

   public void GetPag(int getId)
        {
            tagId = getId;
        }   取出来的这个 tagId  值，保存到txt 文本里边取名叫 text.txt然后怎么在把这个值取出来。。希望大神能帮忙。

Answer 1

StreamWriter   writer   =   new   StreamWriter()---写
StreamReader   sr   =   new   StreamReader()----读
 using system.io
参考

Answer 2

openFileDialog1.Filter = "文本文件(*.txt)|*.txt";
openFileDialog1.ShowDialog();
textBox1.Text=openFileDialog1.FileName;
StreamReader SR=new StreamReader(textBox1.Text,Encoding.Default);
textBox2.Text=SR.ReadLine();

Answer 3

System.IO.File.WriteAllText("text.txt",tagId.ToString());

Answer 4

写
StreamWriter sw = File.AppendText(txtFilePath); 
sw.WriteLine("test");
sw.Flush();
sw.Close(); 读
    StreamReader fileStream = new StreamReader(txtFilePath,Encoding.Default);
    txtContent.Text = fileStream.ReadToEnd();

Answer 5

StreamWriter w = new StreamWrited(sPath);
w.WriteLine(i.tostring());
w.close();

Answer 6

        //存储的文件名
        private const string SettingFileName = "\text.txt";        /// <summary>
        /// 保存配置
        /// </summary>
        /// <param name="tagId">保存的值 tagId</param>
        /// <param name="appPath">存放的路径</param>
        public static void SaveSetting(string tagId, string appPath)
        {
            try
            {
                string fullName = appPath + SettingFileName;
                if (!Directory.Exists(appPath))
                    Directory.CreateDirectory(appPath);
                if (!File.Exists(fullName))
                {
                    FileStream fs = File.Create(fullName);
                    fs.Close();
                }
                StreamWriter sw = new StreamWriter(fullName, false);
                sw.WriteLine(tagId);
                sw.Close();
            }
            catch { }
        }
        /// <summary>
        /// 获得配置文件的信息
        /// </summary>
        /// <param name="appPath">文件所在位置</param>
        /// <returns></returns>
        public static string GetSetting(string appPath)
        {
            string tagId = string.Empty;
            try
            {
                string fullName = appPath + SettingFileName;
                if (!Directory.Exists(appPath))
                    Directory.CreateDirectory(appPath);
                if (!File.Exists(fullName))
                {
                    FileStream fs = File.Create(fullName);
                    fs.Close();
                }
                StreamReader sr = new StreamReader(fullName);
                while (!sr.EndOfStream)
                {
                    string strLine = sr.ReadLine();
                    if (strLine != "")
                    {
                        tagId = strLine;
                    }
                }
                sr.Close();
            }
            catch { }
            return tagId;
        }