{"id":6317,"date":"2023-12-25T22:11:58","date_gmt":"2023-12-25T14:11:58","guid":{"rendered":"https:\/\/zyrastory.com\/?p=6317"},"modified":"2024-01-07T22:49:22","modified_gmt":"2024-01-07T14:49:22","slug":"c-charp-dotnet-ftp-manipulation-package-fluentftp","status":"publish","type":"post","link":"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/","title":{"rendered":"C#.NET FTP Manipulation Package &#8211; FluentFTP"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_66_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u5167\u5bb9\u76ee\u9304<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#what-happened\" title=\"What happened\">What happened<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#introduction-to-fluentftp\" title=\"Introduction to FluentFTP\">Introduction to FluentFTP<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#common-functions\" title=\"Common Functions\">Common Functions<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#establishing-a-connection\" title=\"Establishing a Connection\">Establishing a Connection<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#creating-a-folder\" title=\"Creating a Folder\">Creating a Folder<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#upload-single-file\" title=\"Upload (Single File)\">Upload (Single File)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#upload-an-entire-directory-to-an-ftp-directory\" title=\"Upload an entire directory to an FTP directory\">Upload an entire directory to an FTP directory<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#download-single-file\" title=\"Download Single File\">Download Single File<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#list-the-current-directory\" title=\"List the current directory\">List the current directory<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/c-charp-dotnet-ftp-manipulation-package-fluentftp\/#conclusion\" title=\"Conclusion\">Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"what-happened\"><\/span><strong>What happened<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Recently in my project, I encountered a client requirement to store files on an FTP server instead of locally on the machine or in a database. Therefore, I started looking into how to easily manipulate FTP in C#. <\/p>\n\n\n\n<p>In the past, my understanding of FTP was limited to using FileZilla manually, and I hadn&#8217;t explored programmatic operations with it.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"introduction-to-fluentftp\"><\/span><strong>Introduction to FluentFTP<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>According to the author&#8217;s Github introduction, <strong>FluentFTP <\/strong>is a tool developed for FTP and FTPS based on .NET, supporting several common operations such as file upload\/download, SSL\/TLS connections, automatic directory listing parsing, file hashing\/verification, file permissions\/CHMOD, FTP proxy, FXP transfer, UTF-8 support, Async\/await support, Powershell support, and more.<\/p>\n\n\n\n<p>Additionally, it is entirely written in C#, eliminating external dependencies. To use it in your project, you can easily download it via NuGet &#8211; <a href=\"https:\/\/www.nuget.org\/packages\/FluentFTP\" target=\"_blank\" rel=\"noreferrer noopener\">NuGet Gallery | FluentFTP 48.0.3<\/a><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"common-functions\"><\/span><strong>Common Functions<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Here, I&#8217;ll introduce some functions that I have utilized in the project (additional introductions may be provided later).<\/p>\n\n\n\n<p>Before using any of the features, make sure to establish a connection (remember to include using FluentFTP).<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"establishing-a-connection\"><\/span><strong>Establishing a Connection<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>private static FtpClient createFtpClient() {\n\tFtpClient ftp = new FtpClient(ftpAddress, ftpPort);\n\tftp.Credentials = new System.Net.NetworkCredential(ftpAcc, ftpPwd);\n\n\tftp.Connect();\n\treturn ftp;\n}<\/code><\/pre><\/div>\n\n\n\n<p><br>Here is a simple way to establish a shared connection. Since there are different operations on FTP in the project, the connection method is extracted and written independently.<\/p>\n\n\n\n<p>Connection details should include:<\/p>\n\n\n\n<ul>\n<li>ftpAddress: IP address of the FTP server (aliases seem to work as well).<\/li>\n\n\n\n<li>ftpPort: Port number of the FTP server.<\/li>\n\n\n\n<li>ftpAcc, ftpPwd: User account and password for FTP connection.<\/li>\n<\/ul>\n\n\n\n<p>Additionally, since there is a <strong><em>Connect <\/em><\/strong>method, there is also a <strong><em>Disconnect<\/em><\/strong>. Typically, it is called after usage to terminate the connection.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"creating-a-folder\"><\/span><strong>Creating a Folder<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>public static bool initDict() {\n\tbool result = false;\n\ttry\n\t{\n\t\tFtpClient ftp = createFtpClient();\n\t\tresult = ftp.CreateDirectory(&quot;pdf&quot;);\n\n\t\tftp.Disconnect();\n\t}\n\tcatch (Exception ex) {\n\t\tthrow ex;\n\t}\n\n\treturn result;\n}<\/code><\/pre><\/div>\n\n\n\n<p><strong><em>ftp.CreateDirectory<\/em><\/strong> : If the specified directory doesn&#8217;t exist, it will be created<\/p>\n\n\n\n<p>This can also assist in creating multiple levels. For example, <strong><em>ftp.CreateDirectory(&#8220;pdf\\\\test&#8221;)<\/em><\/strong> will create a &#8216;<strong>pdf<\/strong>&#8216; folder at the root, and underneath it, a subfolder named &#8216;<strong>test<\/strong>&#8216;.<\/p>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"upload-single-file\"><\/span><strong>Upload (Single File)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>public static bool uploadPdf(HttpPostedFileBase file) {\n\tbool result = false;\n\tFtpClient ftp = createFtpClient();\n\t\n\tbyte[] fileBytes;\n\tusing (BinaryReader reader = new BinaryReader(file.InputStream))\n\t{\n\t\tfileBytes = reader.ReadBytes(file.ContentLength);\n\t}\n\n\tFtpStatus ftpStatus = ftp.UploadBytes(fileBytes, &quot;pdf\\\\&quot; + file.FileName);\n\n\tftp.Disconnect();\n\treturn result;\n}<\/code><\/pre><\/div>\n\n\n\n<p>In this section, the <strong><em>UploadBytes <\/em><\/strong>method is utilized to upload a byte array. The provided example involves transmitting a PDF file to the &#8220;<strong>pdf<\/strong>&#8221; folder on the FTP server.<\/p>\n\n\n\n<p>Furthermore, FtpStatus has three possible values: 0 for Failed, 1 for Success, and 2 for Skipped. The &#8220;Skipped&#8221; status occurs when the file already exists on the FTP server.<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"upload-an-entire-directory-to-an-ftp-directory\"><\/span>Upload an entire directory to an FTP directory<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>public static void uploadDir(string uploadDir, string desDir) {\n\tFtpClient ftp = createFtpClient();\n\n\tftp.CreateDirectory(desDir);\n\tList&lt;FtpResult&gt; res = ftp.UploadDirectory(uploadDir, desDir);\n\tftp.Disconnect();\n}<\/code><\/pre><\/div>\n\n\n\n<p><strong><em>ftp.UploadDirectory <\/em><\/strong>: Uploads the entire local directory to the specified directory on the FTP server.<\/p>\n\n\n\n<p>The method returns a List of FtpResult objects, which contains the status of each file in the upload process.<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"download-single-file\"><\/span><strong>Download Single File<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>public static byte[] downloadPdf(string pdfName) {\n\tbyte[] arr;\n\tFtpClient ftp = createFtpClient();\n\n\tbool res = ftp.DownloadBytes(out arr, &quot;pdf\\\\&quot; + pdfName);\n\tftp.Disconnect();\n\n\treturn arr;\n}<\/code><\/pre><\/div>\n\n\n\n<p>Download a file using the out parameter, providing the byte[] and specifying the file location. <\/p>\n\n\n\n<p>In this example, it downloads the previously uploaded PDF.<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"list-the-current-directory\"><\/span><strong>List the current directory<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-csharp\" data-lang=\"C#\"><code>\/\/\/ &lt;summary&gt;\n\/\/\/ List the contents of the current directory (non-recursive).\n\/\/\/ &lt;\/summary&gt;\npublic void ListAll()\n{\n    FtpClient ftp = CreateFtpClient();\n\n    foreach (var item in ftp.GetListing())\n    {\n        Debug.WriteLine(item.ToString());\n    }\n\n    ftp.Disconnect();\n}<\/code><\/pre><\/div>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-7929554876592461\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- IN THE POST2 -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-7929554876592461\"\n     data-ad-slot=\"8198193609\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"conclusion\"><\/span><strong>Conclusion<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>This article primarily documents the basic usage of the FluentFTP package. <\/p>\n\n\n\n<p>Updates may follow if more advanced aspects are explored. If you encounter any issues or have questions, feel free to leave a comment, and I&#8217;ll look into it. <\/p>\n\n\n\n<p>Although using programs to operate FTP might be less common nowadays, personally, I prefer storing data in databases.<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>\ud83d\udc94 The entire article was written and tested independently. Feel free to quote or reference, but please avoid copying the entire content verbatim.<\/strong><\/p>\n\n\n\n<p>\ud83e\udde1<strong>You can support our team by sharing the post or clicking some ads, Thanks a lot<\/strong><\/p>\n\n\n\n<p>\u2705<strong>If you have<\/strong> <strong>any problem about this post, please feel free to ask~<\/strong><\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p><strong>Some Random notes<\/strong><\/p>\n\n\n\n\t\t\t<div class=\"wp-block-uagb-post-grid uagb-post-grid  uagb-post__image-position-top uagb-post__image-enabled uagb-block-efe84f35     uagb-post__items uagb-post__columns-3 is-grid uagb-post__columns-tablet-2 uagb-post__columns-mobile-1 uagb-post__equal-height\" data-total=\"5\" style=\"\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/compare-strings-or-characters-for-equality-in-java-ignoring-case\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">Compare Strings or Characters for Equality in Java (Ignoring Case)<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t\t<time datetime=\"2024-04-18T22:39:32+08:00\" class=\"uagb-post__date\">\n\t\t\t\t<span class=\"dashicons-calendar dashicons\"><\/span>\t\t\t\t\t2024-04-18\t\t\t\t<\/time>\n\t\t\t\t\t\t\t<span class=\"uagb-post__comment\">\n\t\t\t\t<span class=\"dashicons-admin-comments dashicons\"><\/span>\t\t\t\t\t\u5c1a\u7121\u7559\u8a00\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class='uagb-post__text uagb-post__excerpt'>\n\t\t\t\t\tWhen writing code, you may occasionally need to determine if characters or strings are equal,&#8230;\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"uagb-post__text uagb-post__cta wp-block-button\">\n\t\t\t\t<a class=\"wp-block-button__link uagb-text-link\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/compare-strings-or-characters-for-equality-in-java-ignoring-case\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">Read More<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/compare-strings-or-characters-for-equality-in-c-sharp-ignoring-case\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">Compare strings or characters for equality in C# (ignoring case)<\/a>\n\t\t\t<\/h4>\n\t\t\t\t\t\t<div class='uagb-post__text uagb-post-grid-byline'>\n\t\t\t\t\t\t\t\t<time datetime=\"2024-04-13T23:25:05+08:00\" class=\"uagb-post__date\">\n\t\t\t\t<span class=\"dashicons-calendar dashicons\"><\/span>\t\t\t\t\t2024-04-13\t\t\t\t<\/time>\n\t\t\t\t\t\t\t<span class=\"uagb-post__comment\">\n\t\t\t\t<span class=\"dashicons-admin-comments dashicons\"><\/span>\t\t\t\t\t\u5c1a\u7121\u7559\u8a00\t\t\t\t<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class='uagb-post__text uagb-post__excerpt'>\n\t\t\t\t\tHow to Handle Case-Insensitive Comparisons for Characters or Strings in C#\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"uagb-post__text uagb-post__cta wp-block-button\">\n\t\t\t\t<a class=\"wp-block-button__link uagb-text-link\" href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/compare-strings-or-characters-for-equality-in-c-sharp-ignoring-case\/\" target=\"_self\" rel=\"bookmark noopener noreferrer\">Read More<\/a>\n\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<\/article>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<article class=\"uagb-post__inner-wrap\">\t\t\t\t\t\t\t\t<h4 class=\"uagb-post__title uagb-post__text\">\n\t\t\t\t<a href=\"https:\/\/zyrastory.com\/en\/coding-en\/coding-note\/exploring-various-methods-for-obtaining-subarrays-in-c-sharp\/\" 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