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C#讀取寫入文件的3種方式示例代碼

更新時(shí)間：2022年06月15日 10:42:55 作者：時(shí)間里的

最近操作文件頻繁,所以這篇文章主要給大家介紹了關(guān)于C#讀取寫入文件的3種方式,文中通過實(shí)例代碼介紹的非常詳細(xì),對大家學(xué)習(xí)或者使用C#具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下

1：二進(jìn)制讀寫

/// <summary>
        /// 二進(jìn)制寫入文件
        /// </summary>
        private void button1_Click(object sender, EventArgs e)
        {
            SaveFileDialog saveDlg = new SaveFileDialog();
            saveDlg.FileName = "File";
            saveDlg.Title = "保存數(shù)據(jù)";
            saveDlg.Filter = "File(*.txt)|*.txt";
            saveDlg.DefaultExt = "txt";
            saveDlg.AddExtension = true;
            //saveDlg.InitialDirectory = "D:AMC Results";
            if (saveDlg.ShowDialog() == DialogResult.OK)
            {
                Cursor = Cursors.WaitCursor;
                SaveDatafileWithNewVersion(saveDlg.FileName);
                Cursor = Cursors.Default;
            }
        }
  
        /// <summary>
        /// 二進(jìn)制保存文件
        /// </summary>
        public static void SaveDatafileWithNewVersion(String sFile)
        {
            //文件格式依次為：內(nèi)部版本號，...
            Stream stream = File.Open(sFile, FileMode.Create);
            BinaryWriter bw = new BinaryWriter(stream);
            bw.Write((Int16)1);//內(nèi)部版本號，暫時(shí)用1,表示版本1,整型
            ///寫入Config對象
            bw.Write("澤國江山入戰(zhàn)圖
");
            bw.Write("生民何計(jì)樂樵蘇
");
            bw.Write("憑君莫話封侯事
");
            bw.Write("一將功成萬骨枯
");
            bw.Close();
            stream.Close();
        }
  
        /// <summary>
        /// 打開文件
        /// </summary>
        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog openDlg = new OpenFileDialog();
            openDlg.Title = "File";
            openDlg.Filter = "File (*.txt)|*.txt";
  
            if (openDlg.ShowDialog() == DialogResult.OK)
            {
                BinaryReader br = new BinaryReader(new FileStream(openDlg.FileName,
                FileMode.Open));
                string str = "";
                int number = br.ReadInt16();
                str += br.ReadString();
                str += br.ReadString();
                str += br.ReadString();
                str += br.ReadString();
  
                richTextBox1.Text = str;
                br.Close();
            }
        }

2：泛型讀寫：

/// <summary>
        /// 泛型寫入
        /// </summary>
        private void button3_Click(object sender, EventArgs e)
        {
            SaveFileDialog saveDlg = new SaveFileDialog();
            saveDlg.FileName = "File";
            saveDlg.Title = "保存數(shù)據(jù)";
            saveDlg.Filter = "File(*.txt)|*.txt";
            saveDlg.DefaultExt = "txt";
            saveDlg.AddExtension = true;
            //saveDlg.InitialDirectory = "D:AMC Results";
            if (saveDlg.ShowDialog() == DialogResult.OK)
            {
                string str = "澤國江山入戰(zhàn)圖
生民何計(jì)樂樵蘇
憑君莫話封侯事
一將功成萬骨枯
";
                BinarySerialize<string>(str, saveDlg.FileName);
            }
        }
  
        /// <summary>
        /// 寫入文件
        /// </summary>
        /// <typeparam name="T">類型</typeparam>
        /// <param name="obj">寫入類型</param>
        /// <param name="path">路徑</param>
        public static void BinarySerialize<T>(T obj, string path)
        {
  
            FileStream fileStream = new FileStream(path, FileMode.Create);
            BinaryFormatter b = new BinaryFormatter();
            try
            {
                b.Serialize(fileStream, obj);
                fileStream.Close();
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                if (fileStream != null)
                {
                    fileStream.Close();
                    fileStream.Dispose();
                }
            }
        }
  
        /// <summary>
        /// 泛型讀取
        /// </summary>
        private void button4_Click(object sender, EventArgs e)
        {
            OpenFileDialog openDlg = new OpenFileDialog();
            openDlg.Title = "File";
            openDlg.Filter = "File (*.txt)|*.txt";
  
            if (openDlg.ShowDialog() == DialogResult.OK)
            {
                string str = BinaryDeserialize<string>(openDlg.FileName);
                richTextBox2.Text = str;
            }
        }
  
        /// <summary>
        /// 讀取文件
        /// </summary>
        /// <typeparam name="T">類型</typeparam>
        /// <param name="path">路徑</param>
        /// <returns></returns>
        public static T BinaryDeserialize<T>(string path)
        {
            FileStream fileStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
            BinaryFormatter b = new BinaryFormatter();    //SoapFormatter
            T rs;
            try
            {
                rs = (T)b.Deserialize(fileStream);
                return rs;
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            finally
            {
                if (fileStream != null)
                {
                    fileStream.Close();
                    fileStream.Dispose();
                }
            }
            return default(T);
        }

3：XML讀寫：不是很穩(wěn)定

/// <summary>
        /// XML寫入
        /// </summary>
        private void button5_Click(object sender, EventArgs e)
        {
            SaveFileDialog saveDlg = new SaveFileDialog();
            saveDlg.FileName = "File";
            saveDlg.Title = "保存數(shù)據(jù)";
            saveDlg.Filter = "File(*.txt)|*.txt";
            saveDlg.DefaultExt = "txt";
            saveDlg.AddExtension = true;
            //saveDlg.InitialDirectory = "D:AMC Results";
            if (saveDlg.ShowDialog() == DialogResult.OK)
            {
                string str = "澤國江山入戰(zhàn)圖
生民何計(jì)樂樵蘇
憑君莫話封侯事
一將功成萬骨枯
";
                SerializeToXml<string>(saveDlg.FileName, str);
            }
        }
  
        /// <summary>    
        /// XML序列化某一類型到指定的文件
        /// /// </summary>  
        /// /// <param name="filePath">文件路徑</param>  
        /// /// <param name="obj">寫入對象</param> 
        /// /// <param name="type"></param>  
        public static void SerializeToXml<T>(string filePath, T obj)
        {
            try
            {
                using (System.IO.StreamWriter writer = new System.IO.StreamWriter(filePath))
                {
                    System.Xml.Serialization.XmlSerializer xs = new System.Xml.Serialization.XmlSerializer(typeof(T));
                    xs.Serialize(writer, obj);
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
        }
  
        /// <summary>
        /// XML讀取
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button6_Click(object sender, EventArgs e)
        {
            OpenFileDialog openDlg = new OpenFileDialog();
            openDlg.Title = "File";
            openDlg.Filter = "File (*.txt)|*.txt";
  
            if (openDlg.ShowDialog() == DialogResult.OK)
            {
                string str = DeserializeFromXml<string>(openDlg.FileName);
                richTextBox3.Text = str;
            }
        }
  
        /// <summary>    
        /// 從某一XML文件反序列化到某一類型  
        /// </summary>   
        /// <param name="filePath">待反序列化的XML文件名稱</param>
        /// <param name="type">反序列化出的</param> 
        /// <returns></returns>   
        public static T DeserializeFromXml<T>(string filePath)
        {
            try
            {
                if (!System.IO.File.Exists(filePath))
                    throw new ArgumentNullException(filePath + " not Exists");
                using (System.IO.StreamReader reader = new System.IO.StreamReader(filePath))
                {
                    System.Xml.Serialization.XmlSerializer xs = new System.Xml.Serialization.XmlSerializer(typeof(T));
                    T ret = (T)xs.Deserialize(reader);
                    return ret;
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                return default(T);
            }
        }