C# FileStream.Close方法代码示例

 /// <summary>
 /// Запись в ЛОГ-файл
 /// </summary>
 /// <param name="str"></param>
 public void WriteToLog(string str, bool doWrite = true)
 {
     if (doWrite)
     {
         StreamWriter sw = null;
         FileStream fs = null;
         try
         {
             string curDir = AppDomain.CurrentDomain.BaseDirectory;
             fs = new FileStream(curDir + "teplouchetlog.pi", FileMode.Append, FileAccess.Write, FileShare.ReadWrite);
             sw = new StreamWriter(fs, Encoding.Default);
             if (m_vport == null) sw.WriteLine(DateTime.Now.ToString() + ": Unknown port: adress: " + m_address + ": " + str);
             else sw.WriteLine(DateTime.Now.ToString() + ": " + m_vport.GetName() + ": adress: " + m_address + ": " + str);
             sw.Close();
             fs.Close();
         }
         catch
         {
         }
         finally
         {
             if (sw != null)
             {
                 sw.Close();
                 sw = null;
             }
             if (fs != null)
             {
                 fs.Close();
                 fs = null;
             }
         }
     }
 }

      try
      {
        byte[] lBuffer = new byte[BUFFER_SIZE];
        
        int lBytesRead = lStream.Read(lBuffer, 0, BUFFER_SIZE);
        while (lBytesRead > 0)
        {
          aToStream.Write(lBuffer,0,lBytesRead);
          lBytesRead = lStream.Read(lBuffer, 0, BUFFER_SIZE);
        }
      }
      finally
      {
        lStream.Close();
      }
    }
    public override void CreateFile(Stream aStream)
    {
      if (File.Exists(LocalPath))
        throw new Exception("Error savinf file to disk: file already exist.");
      
      Stream lStream = new FileStream(LocalPath, FileMode.CreateNew, FileAccess.Write, FileShare.None);
      try
      {

        byte[] lBuffer = new byte[BUFFER_SIZE];
        
        int lBytesRead = aStream.Read(lBuffer, 0, BUFFER_SIZE);
        while (lBytesRead > 0)

        public static bool Compare(string file1, string file2)
        {
            if (file1.Equals(file2))
                return true;

            if (!File.Exists(file1) || !File.Exists(file2))
                return false;

            FileStream first = new FileStream(file1, FileMode.Open);
            FileStream second = new FileStream(file2, FileMode.Open);

            if (first.Length != second.Length)
            {
                first.Close();
                second.Close();
                return false;
            }

            int byte1;
            int byte2;

            do
            {
                byte1 = first.ReadByte();
                byte2 = second.ReadByte();
            }
            while ((byte1 == byte2) && (byte1 != -1));

            first.Close();
            second.Close();

            return (byte1 == byte2);
        }

        /* return null on error*/
        public byte[] getPicture(string picname)
        {
            if (m_pictures.ContainsKey(picname))
                return m_pictures[picname];
            // try to load from dics
            FileStream fs;
            try
            {
                fs = new FileStream(m_dir + "\\" + picname, FileMode.Open);
            }
            catch (Exception)
            {
                return null;
            }

            try
            {
                byte[] data = new byte[fs.Length];
                fs.Read(data, 0, (int)fs.Length);
                m_pictures[picname] = data;
                fs.Close();
                return data;
            }
            catch (Exception)
            {
                fs.Close();
            }
            return null;
        }

        private static long _indexcount;//索引个数

        static IpHelper() {
            string filePath = Common.GetMapPath("/App_Data/Site/ipdata.config");
            if (File.Exists(filePath)) {
                try {
                    _ipdatefile = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
                }
                catch {
                    _ipdatefile.Close();
                    _ipdatefile.Dispose();
                    return;
                }
                _ipdatefile.Position = 0;
                _indexareabegin = ReadByte4();
                _indexareaend = ReadByte4();
                _indexcount = (_indexareaend - _indexareabegin) / LENGTH + 1;

                if (_indexcount > 0) {
                    _state = true;
                }
                else {
                    _ipdatefile.Close();
                    _ipdatefile.Dispose();
                }
            }
        }

        public static bool Activate()
        {
            FileStream fs = new FileStream("license.txt", FileMode.OpenOrCreate, FileAccess.ReadWrite);

            try
            {
                StreamReader sr = new StreamReader(fs);
                string a = sr.ReadLine();
                string b = sr.ReadLine();

                a = CryptorEngine.Decrypt(a);
                b = CryptorEngine.Decrypt(b);

                sr.Close();
                fs.Close();

                string[] tabs = a.Split('\n');

                Statics.ValidTabletsIdList = new List<string>();

                for (int i = 0; i < tabs.Length; i++)
                    Statics.ValidTabletsIdList.Add(tabs[i]);

                if (b == Statics.HardwareId)
                    return true;
                else
                    return false;
            }
            catch
            {
                fs.Close();
                return false;
            }
        }

        private void saveButton_Click(object sender, EventArgs e)
        {
            FileStream aStreamForReading = new FileStream(fileLocation, FileMode.Open);
            CsvFileReader aReader = new CsvFileReader(aStreamForReading);
            List<string> aRecord = new List<string>();

            while (aReader.ReadRow(aRecord))
            {

                string regNo = aRecord[0];
                if (regNoTextBox.Text == regNo)
                {
                    MessageBox.Show(@"Reg no already exists");
                    aStreamForReading.Close();
                    return;
                }
            }
            aStreamForReading.Close();

            FileStream aStream = new FileStream(fileLocation, FileMode.Append);
            CsvFileWriter aWriter = new CsvFileWriter(aStream);
            List<string> aStudentRecord = new List<string>();
            aStudentRecord.Add(regNoTextBox.Text);
            aStudentRecord.Add(nameTextBox.Text);
            aWriter.WriteRow(aStudentRecord);
            aStream.Close();
        }

 public static bool FindString(FileInfo file, string str)
 {
     string currentStr;
     FileStream fin = null;
     StreamReader reader = null;
     try
     {
         fin = new FileStream(file.DirectoryName + "\\" + file.Name, FileMode.Open);
         reader = new StreamReader(fin);
         while ((currentStr = reader.ReadLine()) != null)
         {
             if (currentStr.Contains(str)) return true;
         }
     }
     catch (IOException ex)
     {
         Console.WriteLine(ex.Message);
     }
     finally
     {
         if (fin != null) fin.Close();
         if (reader != null) fin.Close();
     }
     return false;
 }

        private static void CopyAsync(byte[] buffer, FileStream inputStream, Stream outputStream, TaskCompletionSource<object> tcs)
        {
            inputStream.ReadAsync(buffer).Then(read =>
            {
                if (read > 0)
                {
                    outputStream.WriteAsync(buffer, 0, read)
                                .Then(() => CopyAsync(buffer, inputStream, outputStream, tcs))
                                .Catch(ex =>
                                {
                                    inputStream.Close();
                                    outputStream.Close();
                                    tcs.SetException(ex);
                                });
                }
                else
                {
                    inputStream.Close();
                    outputStream.Close();

                    tcs.SetResult(null);
                }
            })
            .Catch(ex =>
            {
                inputStream.Close();
                outputStream.Close();

                tcs.SetException(ex);
            });
        }

         public static bool load()
        {
            //---------------------------------输出数据库---------------------------

            if (!(File.Exists(strDatabasePath)))
            {
                string dir = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) + "\\ContorlSetting\\";
                if (!Directory.Exists(dir)) Directory.CreateDirectory(dir);
                FileStream fs = new FileStream(strDatabasePath, FileMode.OpenOrCreate, FileAccess.Write);

                try
                {
                    Byte[] b = SAS.Properties.Resources.DataBase;

                    fs.Write(b, 0, b.Length);
                    if (fs != null)
                        fs.Close();
                }
                catch
                {
                    if (fs != null)
                        fs.Close();
                    return false;
                }
            }
            // -----------------------------第一次加载代码，------------------------------
            //if (conn.State != ConnectionState.Open)
            //    conn.Open();

            ////-----------------------------操作完成后记得关闭连接------------------------------
            //conn.Close();
            return true;
        }

        public static IOperation[] loadOpsFile(string path, Type[] knownTypes)
        {
            //Open the operation file.
            FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Read, FileShare.Read);

            //Read in the file and store each item to a list. Type is "anyType" but this will be cast to IOperation.
            DataContractSerializer serializer = new DataContractSerializer(typeof(IOperation), knownTypes);
            XmlReader read = XmlReader.Create(fs);
            read.ReadToDescendant("z:anyType");

            List<IOperation> opList = new List<IOperation>();

            //Blurahegle
            while (serializer.IsStartObject(read))
            {
                //Check each type when deserializing. Make sure we can cast it.
                try
                {
                    opList.Add((IOperation)serializer.ReadObject(read));
                }
                catch (Exception e)
                {
                    MessageBox.Show("Invalid operation type encountered. Please ensure all required libraies are installed \n" + e.Message, "An error has occured",MessageBoxButtons.OK,MessageBoxIcon.Error);
                    fs.Close();
                    return null;
                }
            }
            fs.Close();
            return opList.ToArray();
            //Done
        }

 private static void DisplayContent(HttpWebResponse response, string id)
 {
     Stream stream = response.GetResponseStream();
     if (stream != null)
     {
         string filePath = "D:\\pic\\" + id + ".png";
         FileStream fs = new FileStream(filePath, FileMode.Create);
         GZipStream gzip = new GZipStream(stream, CompressionMode.Decompress);
         byte[] bytes = new byte[1024];
         int len;
         if ((len = gzip.Read(bytes, 0, bytes.Length)) > 0)
         {
             fs.Write(bytes, 0, len);
         }
         else
         {
             fs.Close();
             File.Delete(filePath);
             throw new Exception();
         }
         while ((len = gzip.Read(bytes, 0, bytes.Length)) > 0)
         {
             fs.Write(bytes, 0, len);
         }
         fs.Close();
     }
 }

 public static void EditFile(int curLine, string newLineValue, string patch)
 {
     FileStream fs = new FileStream(patch, FileMode.Open, FileAccess.Read);
     StreamReader sr = new StreamReader(fs, Encoding.GetEncoding("utf-8"));
     string line = sr.ReadLine();
     StringBuilder sb = new StringBuilder();
     if (curLine == 1)
     {
         line = newLineValue;
         sb.Append(line + "\r\n");
     }
     else
     {
         for (int i = 1; line != null; i++)
         {
             sb.Append(line + "\r\n");
             if (i != curLine - 1)
                 line = sr.ReadLine();
             else
             {
                 sr.ReadLine();
                 line = newLineValue;
             }
         }
     }
     sr.Close();
     fs.Close();
     FileStream fs1 = new FileStream(patch, FileMode.Open, FileAccess.Write);
     StreamWriter sw = new StreamWriter(fs1);
     sw.Write(sb.ToString());
     sw.Close();
     fs.Close();
 }

        private void main()
        {
            // Nome arquivo de saida. Mude para o valor que quiser
            FileStream arquivo1Pdf = new FileStream(@"D:\Temp\teste1.pdf", FileMode.OpenOrCreate, FileAccess.Write);
            ControladorPDF.Instancia.obterProgramacaoPDF(new DateTime(2010, 06, 28), TipoProgramacao.DiaDaSemana, arquivo1Pdf);
            //arquivo1Pdf.Flush();
            arquivo1Pdf.Close();

            // mesmo teste, mudando o tipo da programacao
            FileStream arquivo2Pdf = new FileStream(@"D:\Temp\teste2.pdf", FileMode.OpenOrCreate, FileAccess.Write);
            ControladorPDF.Instancia.obterProgramacaoPDF(new DateTime(2010, 06, 28), TipoProgramacao.Diaria, arquivo2Pdf);
            //arquivo2Pdf.Flush();
            arquivo2Pdf.Close();

            // testa periodo sem programacao
            FileStream arquivo3Pdf = new FileStream(@"D:\Temp\teste3.pdf", FileMode.OpenOrCreate, FileAccess.Write);
            ControladorPDF.Instancia.obterProgramacaoPDF(new DateTime(2020, 06, 28), TipoProgramacao.Diaria, arquivo3Pdf);
            //arquivo2Pdf.Flush();
            arquivo3Pdf.Close();

            // Nome arquivo de saida. Mude para o valor que quiser
            FileStream arquivo4Pdf = new FileStream(@"D:\Temp\teste4.pdf", FileMode.OpenOrCreate, FileAccess.Write);
            ControladorPDF.Instancia.obterAtividadesPDF(TipoAgrupamentoAtividade.DiaDaSemana, arquivo4Pdf);
            //arquivo1Pdf.Flush();
            arquivo1Pdf.Close();

            // Nome arquivo de saida. Mude para o valor que quiser
            FileStream arquivo5Pdf = new FileStream(@"D:\Temp\teste5.pdf", FileMode.OpenOrCreate, FileAccess.Write);
            ControladorPDF.Instancia.obterAtividadesPDF(TipoAgrupamentoAtividade.TipoAtividade, arquivo5Pdf);
            //arquivo1Pdf.Flush();
            arquivo1Pdf.Close();
        }

        public static void DecompressFileLZMA(string inFile, string outFile)
        {
            SevenZip.Sdk.Compression.Lzma.Decoder coder = new SevenZip.Sdk.Compression.Lzma.Decoder();
            FileStream input = new FileStream(inFile, FileMode.Open);
            FileStream output = new FileStream(outFile, FileMode.Create);

            // Read the decoder properties
            byte[] properties = new byte[5];
            input.Read(properties, 0, 5);

            // Read in the decompress file size.
            byte[] fileLengthBytes = new byte[8];
            input.Read(fileLengthBytes, 0, 8);
            long fileLength = BitConverter.ToInt64(fileLengthBytes, 0);

            coder.SetDecoderProperties(properties);
            coder.Code(input, output, input.Length, fileLength, null);
            output.Flush();
            output.Close();

            try
            {
                output.Flush();
                output.Close();

                input.Flush();
                input.Close();
            }
            catch
            {
            }
        }