C#System.IO.Compression命名空間怎么實(shí)現(xiàn)

這篇文章主要介紹“C# System.IO.Compression命名空間怎么實(shí)現(xiàn)”,在日常操作中,相信很多人在C# System.IO.Compression命名空間怎么實(shí)現(xiàn)問(wèn)題上存在疑惑,小編查閱了各式資料,整理出簡(jiǎn)單好用的操作方法,希望對(duì)大家解答”C# System.IO.Compression命名空間怎么實(shí)現(xiàn)”的疑惑有所幫助!接下來(lái),請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧!

站在用戶的角度思考問(wèn)題,與客戶深入溝通,找到七里河網(wǎng)站設(shè)計(jì)與七里河網(wǎng)站推廣的解決方案,憑借多年的經(jīng)驗(yàn),讓設(shè)計(jì)與互聯(lián)網(wǎng)技術(shù)結(jié)合,創(chuàng)造個(gè)性化、用戶體驗(yàn)好的作品,建站類型包括:成都做網(wǎng)站、網(wǎng)站制作、企業(yè)官網(wǎng)、英文網(wǎng)站、手機(jī)端網(wǎng)站、網(wǎng)站推廣、空間域名、網(wǎng)絡(luò)空間、企業(yè)郵箱。業(yè)務(wù)覆蓋七里河地區(qū)。

C# System.IO.Compression命名空間,注意:此命名空間在 .NET Framework 2.0 版中是新增的。C# System.IO.Compression命名空間包含提供基本的流壓縮和解壓縮服務(wù)的類。GZipStream提供用于壓縮和解壓縮流的方法和屬性。下面以 GZipStream  為例說(shuō)明

注意:此類在 .NET Framework 2.0 版中是新增的。

提供用于壓縮和解壓縮流的方法和屬性。
命名空間:System.IO.Compression
程序集:System(在 system.dll 中)
語(yǔ)法
Visual Basic(聲明)
Public Class GZipStream
Inherits Stream
Visual Basic(用法)
Dim instance As GZipStream

C#
public class GZipStream : Stream

C++
public ref class GZipStream : public Stream

J#
public class GZipStream extends Stream

JScript
public class GZipStream extends Stream

  1. classclsZip  

  2. ...{  

  3. publicvoidCompressFile(stringsourceFile,stringdestinationFile)  

  4. ...{  

  5. //makesurethesourcefileisthere  

  6. if(File.Exists(sourceFile)==false)  

  7. thrownewFileNotFoundException();  

  8.  

  9. //Createthestreamsandbytearraysneeded  

  10. byte[]buffer=null;  

  11. FileStreamsourceStream=null;  

  12. FileStreamdestinationStream=null;  

  13. GZipStreamcompressedStream=null;  

  14.  

  15. try  

  16. ...{  

  17. //Readthebytesfromthesourcefileintoabytearray  

  18. sourceStream=newFileStream(sourceFile,FileMode.Open,FileAccess.Read,FileShare.Read);  

  19.  

  20. //Readthesourcestreamvaluesintothebuffer  

  21. buffer=newbyte[sourceStream.Length];  

  22. intcheckCounter=sourceStream.Read(buffer,0,buffer.Length);  

  23.  

  24. if(checkCounter!=buffer.Length)  

  25. ...{  

  26. thrownewApplicationException();  

  27. }  

  28.  

  29. //OpentheFileStreamtowriteto  

  30. destinationStream=newFileStream(destinationFile,FileMode.OpenOrCreate,FileAccess.Write);  

  31.  

  32. //Createacompressionstreampointingtothedestiantionstream  

  33. compressedStream=newGZipStream(destinationStream,CompressionMode.Compress,true);  

  34.  

  35. //Nowwritethecompresseddatatothedestinationfile  

  36. compressedStream.Write(buffer,0,buffer.Length);  

  37. }  

  38. catch(ApplicationExceptionex)  

  39. ...{  

  40. MessageBox.Show(ex.Message,"壓縮文件時(shí)發(fā)生錯(cuò)誤:",MessageBoxButtons.OK,MessageBoxIcon.Error);  

  41. }  

  42. finally  

  43. ...{  

  44. //Makesureweallwayscloseallstreams  

  45. if(sourceStream!=null)  

  46. sourceStream.Close();  

  47.  

  48. if(compressedStream!=null)  

  49. compressedStream.Close();  

  50.  

  51. if(destinationStream!=null)  

  52. destinationStream.Close();  

  53. }  

  54. }  

  55.  

  56. publicvoidDecompressFile(stringsourceFile,stringdestinationFile)  

  57. ...{  

  58. //makesurethesourcefileisthere  

  59. if(File.Exists(sourceFile)==false)  

  60. thrownewFileNotFoundException();  

  61.  

  62. //Createthestreamsandbytearraysneeded  

  63. FileStreamsourceStream=null;  

  64. FileStreamdestinationStream=null;  

  65. GZipStreamdecompressedStream=null;  

  66. byte[]quartetBuffer=null;  

  67.  

  68. try  

  69. ...{  

  70. //Readinthecompressedsourcestream  

  71. sourceStream=newFileStream(sourceFile,FileMode.Open);  

  72.  

  73. //Createacompressionstreampointingtothedestiantionstream  

  74. decompressedStream=newGZipStream(sourceStream,CompressionMode.Decompress,true);  

  75.  

  76. //Readthefootertodeterminethelengthofthedestiantionfile  

  77. quartetBuffer=newbyte[4];  

  78. intposition=(int)sourceStream.Length-4;  

  79. sourceStream.Position=position;  

  80. sourceStream.Read(quartetBuffer,0,4);  

  81. sourceStream.Position=0;  

  82. intcheckLength=BitConverter.ToInt32(quartetBuffer,0);  

  83.  

  84. byte[]buffer=newbyte[checkLength+100];  

  85.  

  86. intoffset=0;  

  87. inttotal=0;  

  88.  

  89. //Readthecompresseddataintothebuffer  

  90. while(true)  

  91. ...{  

  92. intbytesRead=decompressedStream.Read(buffer,offset,100);  

  93.  

  94. if(bytesRead==0)  

  95. break;  

  96.  

  97. offset+=bytesRead;  

  98. total+=bytesRead;  

  99. }  

  100.  

  101. //Nowwriteeverythingtothedestinationfile  

  102. destinationStream=newFileStream(destinationFile,FileMode.Create);  

  103. destinationStream.Write(buffer,0,total);  

  104.  

  105. //andflusheveryhtingtocleanoutthebuffer  

  106. destinationStream.Flush();  

  107. }  

  108. catch(ApplicationExceptionex)  

  109. ...{  

  110. MessageBox.Show(ex.Message,"解壓文件時(shí)發(fā)生錯(cuò)誤:",
    MessageBoxButtons.OK,MessageBoxIcon.Error);  

  111. }  

  112. finally  

  113. ...{  

  114. //Makesureweallwayscloseallstreams  

  115. if(sourceStream!=null)  

  116. sourceStream.Close();  

  117.  

  118. if(decompressedStream!=null)  

  119. decompressedStream.Close();  

  120.  

  121. if(destinationStream!=null)  

  122. destinationStream.Close();  

  123. }  

  124.  

  125. }  

到此,關(guān)于“C# System.IO.Compression命名空間怎么實(shí)現(xiàn)”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識(shí),請(qǐng)繼續(xù)關(guān)注創(chuàng)新互聯(lián)網(wǎng)站,小編會(huì)繼續(xù)努力為大家?guī)?lái)更多實(shí)用的文章!

網(wǎng)頁(yè)題目:C#System.IO.Compression命名空間怎么實(shí)現(xiàn)
文章地址:http://muchs.cn/article30/gpjhso.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián),為您提供網(wǎng)站排名、動(dòng)態(tài)網(wǎng)站網(wǎng)站維護(hù)、營(yíng)銷型網(wǎng)站建設(shè)建站公司、云服務(wù)器

廣告

聲明:本網(wǎng)站發(fā)布的內(nèi)容(圖片、視頻和文字)以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主,如果涉及侵權(quán)請(qǐng)盡快告知,我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如需處理請(qǐng)聯(lián)系客服。電話:028-86922220;郵箱:631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載,或轉(zhuǎn)載時(shí)需注明來(lái)源: 創(chuàng)新互聯(lián)

網(wǎng)站托管運(yùn)營(yíng)