{"id":3544,"date":"2025-04-13T14:56:21","date_gmt":"2025-04-13T06:56:21","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3544"},"modified":"2025-04-13T14:56:21","modified_gmt":"2025-04-13T06:56:21","slug":"c-%e6%96%87%e4%bb%b6%e8%be%93%e5%85%a5%e4%b8%8e%e8%be%93%e5%87%ba%ef%bc%88file-i-o%ef%bc%89%e6%95%99%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/13\/c-%e6%96%87%e4%bb%b6%e8%be%93%e5%85%a5%e4%b8%8e%e8%be%93%e5%87%ba%ef%bc%88file-i-o%ef%bc%89%e6%95%99%e7%a8%8b\/","title":{"rendered":"C# \u6587\u4ef6\u8f93\u5165\u4e0e\u8f93\u51fa\uff08File I\/O\uff09\u6559\u7a0b"},"content":{"rendered":"\n<p>\u672c\u7ae0\u8282\u4e3a<strong>\u5168\u9762\u8be6\u5c3d\u7684 C# \u6587\u4ef6\u8f93\u5165\u4e0e\u8f93\u51fa\uff08File I\/O\uff09\u6559\u7a0b<\/strong>\uff0c\u6db5\u76d6\u57fa\u7840\u5230\u9ad8\u7ea7\u5185\u5bb9\uff0c\u5305\u542b\u5b9e\u6218\u6848\u4f8b\u4e0e\u591a\u79cd\u65b9\u6cd5\uff0c\u9002\u7528\u4e8e\u63a7\u5236\u53f0\u7a0b\u5e8f\u3001\u684c\u9762\u5e94\u7528\u3001ASP.NET \u7b49\u5404\u79cd\u573a\u666f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udcda \u76ee\u5f55<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6587\u4ef6 I\/O \u57fa\u672c\u6982\u5ff5<\/li>\n\n\n\n<li>\u5e38\u7528\u7c7b\u4ecb\u7ecd\uff08<code>File<\/code>, <code>FileInfo<\/code>, <code>StreamReader<\/code>, <code>StreamWriter<\/code>, \u7b49\uff09<\/li>\n\n\n\n<li>\u8bfb\u53d6\u6587\u4ef6\u7684\u65b9\u5f0f\uff08\u591a\u79cd\u65b9\u5f0f\u5bf9\u6bd4\uff09<\/li>\n\n\n\n<li>\u5199\u5165\u6587\u4ef6\u7684\u65b9\u5f0f\uff08\u8ffd\u52a0\u3001\u8986\u76d6\u7b49\uff09<\/li>\n\n\n\n<li>\u6587\u4ef6\u4e0e\u76ee\u5f55\u64cd\u4f5c\uff08\u590d\u5236\u3001\u5220\u9664\u3001\u79fb\u52a8\u3001\u521b\u5efa\uff09<\/li>\n\n\n\n<li>\u4e8c\u8fdb\u5236\u8bfb\u5199\uff08<code>BinaryReader<\/code> \/ <code>BinaryWriter<\/code>\uff09<\/li>\n\n\n\n<li>\u5f02\u6b65\u6587\u4ef6 I\/O\uff08async\/await\uff09<\/li>\n\n\n\n<li>\u5f02\u5e38\u5904\u7406\u4e0e\u8d44\u6e90\u91ca\u653e\uff08<code>using<\/code>\uff09<\/li>\n\n\n\n<li>\u5b9e\u6218\u6848\u4f8b\uff1a\u65e5\u5fd7\u5199\u5165\u5668\u3001\u6587\u4ef6\u5408\u5e76\u5de5\u5177\u3001\u7b80\u6613\u6587\u672c\u7f16\u8f91\u5668<\/li>\n\n\n\n<li>\u53c2\u8003\u94fe\u63a5<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. \u6587\u4ef6 I\/O \u57fa\u672c\u6982\u5ff5<\/h2>\n\n\n\n<p>\u6587\u4ef6 I\/O\uff08Input\/Output\uff09\u5373\u6587\u4ef6\u7684\u8bfb\u53d6\u4e0e\u5199\u5165\uff0c\u662f\u901a\u8fc7 <code>System.IO<\/code> \u547d\u540d\u7a7a\u95f4\u4e0b\u7684\u7c7b\u5b9e\u73b0\u7684\uff0c\u5e38\u89c1\u4efb\u52a1\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/li>\n\n\n\n<li>\u5199\u5165\/\u8ffd\u52a0\u6587\u4ef6<\/li>\n\n\n\n<li>\u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728<\/li>\n\n\n\n<li>\u64cd\u4f5c\u6587\u4ef6\u5939\uff08\u590d\u5236\u3001\u5220\u9664\u3001\u79fb\u52a8\uff09<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u5e38\u7528\u7c7b\u4ecb\u7ecd<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7c7b\u540d<\/th><th>\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td><code>File<\/code><\/td><td>\u63d0\u4f9b\u9759\u6001\u65b9\u6cd5\uff0c\u7528\u4e8e\u521b\u5efa\u3001\u590d\u5236\u3001\u5220\u9664\u3001\u79fb\u52a8\u6587\u4ef6<\/td><\/tr><tr><td><code>FileInfo<\/code><\/td><td>\u4e0e File \u7c7b\u529f\u80fd\u7c7b\u4f3c\uff0c\u4f46\u4e3a\u5b9e\u4f8b\u65b9\u6cd5<\/td><\/tr><tr><td><code>StreamReader<\/code><\/td><td>\u7528\u4e8e\u8bfb\u53d6\u6587\u672c\u6587\u4ef6<\/td><\/tr><tr><td><code>StreamWriter<\/code><\/td><td>\u7528\u4e8e\u5199\u5165\u6587\u672c\u6587\u4ef6<\/td><\/tr><tr><td><code>BinaryReader<\/code> \/ <code>BinaryWriter<\/code><\/td><td>\u7528\u4e8e\u4e8c\u8fdb\u5236\u8bfb\u5199<\/td><\/tr><tr><td><code>Path<\/code><\/td><td>\u63d0\u4f9b\u8def\u5f84\u5904\u7406\u7684\u9759\u6001\u65b9\u6cd5<\/td><\/tr><tr><td><code>Directory<\/code> \/ <code>DirectoryInfo<\/code><\/td><td>\u76ee\u5f55\u64cd\u4f5c\u7c7b<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u6587\u4ef6\u8bfb\u53d6\u7684\u65b9\u5f0f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u65b9\u6cd5 1\uff1a<code>File.ReadAllText()<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>string content = File.ReadAllText(\"example.txt\");\nConsole.WriteLine(content);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u65b9\u6cd5 2\uff1a\u9010\u884c\u8bfb\u53d6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>foreach (string line in File.ReadLines(\"example.txt\"))\n{\n    Console.WriteLine(line);\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u65b9\u6cd5 3\uff1a\u4f7f\u7528 <code>StreamReader<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>using (StreamReader reader = new StreamReader(\"example.txt\"))\n{\n    string line;\n    while ((line = reader.ReadLine()) != null)\n    {\n        Console.WriteLine(line);\n    }\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u6587\u4ef6\u5199\u5165\u7684\u65b9\u5f0f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u8986\u76d6\u5199\u5165\uff1a<code>File.WriteAllText<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>File.WriteAllText(\"output.txt\", \"Hello, world!\");<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u8ffd\u52a0\u5199\u5165\uff1a<code>File.AppendAllText<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>File.AppendAllText(\"output.txt\", \"\u8ffd\u52a0\u5185\u5bb9\\n\");<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u4f7f\u7528 <code>StreamWriter<\/code><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>using (StreamWriter writer = new StreamWriter(\"output.txt\", append: true))\n{\n    writer.WriteLine(\"\u8ffd\u52a0\u4e00\u884c\u6587\u5b57\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u6587\u4ef6\u4e0e\u76ee\u5f55\u64cd\u4f5c<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728\nif (File.Exists(\"example.txt\")) { ... }\n\n\/\/ \u521b\u5efa\u6587\u4ef6\nFile.Create(\"newfile.txt\").Dispose(); \/\/ \u6ce8\u610f\u91ca\u653e\u6587\u4ef6\u53e5\u67c4\n\n\/\/ \u5220\u9664\u6587\u4ef6\nFile.Delete(\"example.txt\");\n\n\/\/ \u79fb\u52a8\u6587\u4ef6\nFile.Move(\"a.txt\", \"b.txt\");\n\n\/\/ \u590d\u5236\u6587\u4ef6\nFile.Copy(\"source.txt\", \"copy.txt\", overwrite: true);<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc1 \u6587\u4ef6\u5939\u64cd\u4f5c\uff1a<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u521b\u5efa\u6587\u4ef6\u5939\nDirectory.CreateDirectory(\"data\");\n\n\/\/ \u83b7\u53d6\u6240\u6709 txt \u6587\u4ef6\nvar files = Directory.GetFiles(\"data\", \"*.txt\");<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u4e8c\u8fdb\u5236\u8bfb\u5199<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ \u5199\u5165\nusing (BinaryWriter writer = new BinaryWriter(File.Open(\"data.bin\", FileMode.Create)))\n{\n    writer.Write(42);\n    writer.Write(\"Hello\");\n    writer.Write(true);\n}\n\n\/\/ \u8bfb\u53d6\nusing (BinaryReader reader = new BinaryReader(File.Open(\"data.bin\", FileMode.Open)))\n{\n    int number = reader.ReadInt32();\n    string text = reader.ReadString();\n    bool flag = reader.ReadBoolean();\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">7. \u5f02\u6b65\u6587\u4ef6\u8bfb\u5199\uff08C# 5+\uff09<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>string content = await File.ReadAllTextAsync(\"example.txt\");\nawait File.WriteAllTextAsync(\"output.txt\", content);<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">8. \u5f02\u5e38\u5904\u7406\u4e0e\u8d44\u6e90\u91ca\u653e<\/h2>\n\n\n\n<p>\u6c38\u8fdc\u4f7f\u7528 <code>using<\/code> \u6216 <code>try-finally<\/code>\uff0c\u786e\u4fdd\u8d44\u6e90\u91ca\u653e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>try\n{\n    using StreamReader sr = new StreamReader(\"data.txt\");\n    Console.WriteLine(await sr.ReadToEndAsync());\n}\ncatch (IOException ex)\n{\n    Console.WriteLine($\"\u6587\u4ef6\u9519\u8bef\uff1a{ex.Message}\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">9. \u5b9e\u6218\u6848\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcdd \u793a\u4f8b\uff1a\u65e5\u5fd7\u8bb0\u5f55\u5668<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public static class Logger\n{\n    private static readonly string logPath = \"app.log\";\n\n    public static void Log(string message)\n    {\n        string logLine = $\"{DateTime.Now:yyyy-MM-dd HH:mm:ss} - {message}\";\n        File.AppendAllText(logPath, logLine + Environment.NewLine);\n    }\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcc2 \u793a\u4f8b\uff1a\u5408\u5e76\u591a\u4e2a\u6587\u672c\u6587\u4ef6<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>string&#91;] files = Directory.GetFiles(\"texts\", \"*.txt\");\nusing (StreamWriter writer = new StreamWriter(\"merged.txt\"))\n{\n    foreach (var file in files)\n    {\n        string content = File.ReadAllText(file);\n        writer.WriteLine(content);\n    }\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udee0\ufe0f \u793a\u4f8b\uff1a\u6587\u4ef6\u5927\u5c0f\u68c0\u6d4b\u5668\uff08\u663e\u793a\u6587\u4ef6\u5927\u5c0f MB\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>string path = \"video.mp4\";\nif (File.Exists(path))\n{\n    long size = new FileInfo(path).Length;\n    Console.WriteLine($\"\u6587\u4ef6\u5927\u5c0f\uff1a{size \/ (1024 * 1024.0):F2} MB\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">10. \u5173\u4e8eWPF \/ WinForms \u4e2d\u7684\u6587\u4ef6\u4e0a\u4f20\u4e0e\u4e0b\u8f7d\u5b9e\u73b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd39 WPF \/ WinForms \u6587\u4ef6\u9009\u62e9\u5668\uff08\u4e0a\u4f20\uff09<\/h3>\n\n\n\n<p>\u4f7f\u7528 <code>OpenFileDialog<\/code>\uff08\u9700\u8981\u5f15\u7528 <code>Microsoft.Win32<\/code> \u6216 <code>System.Windows.Forms<\/code>\uff09\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u793a\u4f8b 1\uff1aWPF \u6587\u4ef6\u9009\u62e9\uff08\u4e0a\u4f20\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>using Microsoft.Win32;\n\nOpenFileDialog openFileDialog = new OpenFileDialog();\nopenFileDialog.Filter = \"Text files (*.txt)|*.txt|All files (*.*)|*.*\";\n\nif (openFileDialog.ShowDialog() == true)\n{\n    string filePath = openFileDialog.FileName;\n    string content = File.ReadAllText(filePath);\n    MessageBox.Show(content);\n}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 \u793a\u4f8b 2\uff1aWinForms \u6587\u4ef6\u9009\u62e9\u5668\uff08\u4e0a\u4f20\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>using System.Windows.Forms;\n\nOpenFileDialog dialog = new OpenFileDialog();\nif (dialog.ShowDialog() == DialogResult.OK)\n{\n    string filePath = dialog.FileName;\n    string content = File.ReadAllText(filePath);\n    MessageBox.Show(content);\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd3d WPF \/ WinForms \u6587\u4ef6\u4e0b\u8f7d\uff08\u4fdd\u5b58\u4e3a\uff09<\/h3>\n\n\n\n<p>\u4f7f\u7528 <code>SaveFileDialog<\/code> \u4fdd\u5b58\u5185\u5bb9\u5230\u6307\u5b9a\u8def\u5f84\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SaveFileDialog saveFileDialog = new SaveFileDialog();\nsaveFileDialog.Filter = \"Text file (*.txt)|*.txt\";\n\nif (saveFileDialog.ShowDialog() == true)\n{\n    File.WriteAllText(saveFileDialog.FileName, \"\u8fd9\u662f\u8981\u4fdd\u5b58\u7684\u5185\u5bb9\");\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">11. \u5173\u4e8eASP.NET Core \u4e2d\u5904\u7406\u6587\u4ef6\u4e0a\u4f20\uff08IFormFile\uff09<\/h2>\n\n\n\n<p>ASP.NET Core \u4f7f\u7528 <code>IFormFile<\/code> \u63a5\u53e3\u5904\u7406\u524d\u7aef\u4e0a\u4f20\u7684\u6587\u4ef6\uff0c\u652f\u6301\u5355\u6587\u4ef6\u4e0e\u591a\u6587\u4ef6\u4e0a\u4f20\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 1. \u521b\u5efa\u6587\u4ef6\u4e0a\u4f20\u63a5\u53e3\uff08Controller\uff09<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;HttpPost(\"upload\")]\npublic async Task&lt;IActionResult&gt; UploadFile(IFormFile file)\n{\n    if (file == null || file.Length == 0)\n        return BadRequest(\"\u6587\u4ef6\u4e3a\u7a7a\");\n\n    var filePath = Path.Combine(\"Uploads\", file.FileName);\n\n    \/\/ \u786e\u4fdd\u4e0a\u4f20\u76ee\u5f55\u5b58\u5728\n    Directory.CreateDirectory(\"Uploads\");\n\n    using (var stream = new FileStream(filePath, FileMode.Create))\n    {\n        await file.CopyToAsync(stream);\n    }\n\n    return Ok(new { status = \"\u6210\u529f\", path = filePath });\n}<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 2. Razor \/ HTML \u4e0a\u4f20\u9875\u9762<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;form method=\"post\" enctype=\"multipart\/form-data\" action=\"\/upload\"&gt;\n    &lt;input type=\"file\" name=\"file\" \/&gt;\n    &lt;input type=\"submit\" value=\"\u4e0a\u4f20\u6587\u4ef6\" \/&gt;\n&lt;\/form&gt;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u2705 3. \u5904\u7406\u591a\u4e2a\u6587\u4ef6\u4e0a\u4f20<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;HttpPost(\"multi-upload\")]\npublic async Task&lt;IActionResult&gt; UploadFiles(List&lt;IFormFile&gt; files)\n{\n    foreach (var file in files)\n    {\n        var path = Path.Combine(\"Uploads\", file.FileName);\n        using var stream = new FileStream(path, FileMode.Create);\n        await file.CopyToAsync(stream);\n    }\n\n    return Ok(\"\u6587\u4ef6\u4e0a\u4f20\u6210\u529f\");\n}<\/code><\/pre>\n\n\n\n<p>HTML\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;form method=\"post\" enctype=\"multipart\/form-data\" action=\"\/multi-upload\"&gt;\n    &lt;input type=\"file\" name=\"files\" multiple \/&gt;\n    &lt;input type=\"submit\" value=\"\u4e0a\u4f20\u591a\u4e2a\u6587\u4ef6\" \/&gt;\n&lt;\/form&gt;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd3d ASP.NET Core \u6587\u4ef6\u4e0b\u8f7d\u63a5\u53e3<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;HttpGet(\"download\/{filename}\")]\npublic IActionResult DownloadFile(string filename)\n{\n    var filePath = Path.Combine(\"Uploads\", filename);\n\n    if (!System.IO.File.Exists(filePath))\n        return NotFound();\n\n    var contentType = \"application\/octet-stream\";\n    return PhysicalFile(filePath, contentType, filename);\n}<\/code><\/pre>\n\n\n\n<p>\ud83d\udcce \u8bbf\u95ee\u94fe\u63a5\u793a\u4f8b\uff1a<br><code>https:\/\/localhost:5001\/download\/sample.txt<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udd10 \u5b89\u5168\u5efa\u8bae<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>Path.GetFileName<\/code> \u907f\u514d\u8def\u5f84\u7a7f\u8d8a\u653b\u51fb<\/li>\n\n\n\n<li>\u68c0\u67e5\u4e0a\u4f20\u6587\u4ef6\u7c7b\u578b\uff08MIME \u7c7b\u578b\u4e0e\u540e\u7f00\uff09<\/li>\n\n\n\n<li>\u9650\u5236\u6587\u4ef6\u5927\u5c0f\uff08\u901a\u8fc7 <code>RequestSizeLimit<\/code> \u6216\u5168\u5c40\u8bbe\u7f6e\uff09<\/li>\n\n\n\n<li>\u7981\u6b62\u6267\u884c\u4e0a\u4f20\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\uff08\u8bbe\u7f6e\u6743\u9650\uff09<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\ud83d\udcda \u53c2\u8003\u94fe\u63a5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/aspnet\/core\/mvc\/models\/file-uploads\">\ud83d\udcd8 ASP.NET Core &#8211; \u4e0a\u4f20\u6587\u4ef6\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/api\/microsoft.win32.openfiledialog\">\ud83d\udcd8 WPF OpenFileDialog \u4f7f\u7528<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/api\/microsoft.win32.savefiledialog\">\ud83d\udcd8 SaveFileDialog \u5b98\u65b9\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/api\/system.io\">\ud83d\udcd8 Microsoft Docs &#8211; System.IO<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/api\/system.io.file\">\ud83d\udcd8 File \u7c7b\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/api\/system.io.streamreader\">\ud83d\udcd8 StreamReader \u7c7b\u6587\u6863<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/learn.microsoft.com\/en-us\/dotnet\/standard\/io\/index\">\ud83d\udcd8 C# \u6587\u4ef6\u64cd\u4f5c\u6307\u5357<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u66f4\u591a\u8be6\u7ec6\u5185\u5bb9\uff0c\u8bf7\u5173\u6ce8\u5176\u4ed6\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u7ae0\u8282\u4e3a\u5168\u9762\u8be6\u5c3d\u7684 C# \u6587\u4ef6\u8f93\u5165\u4e0e\u8f93\u51fa\uff08File I\/O\uff09\u6559\u7a0b\uff0c\u6db5\u76d6\u57fa\u7840\u5230\u9ad8\u7ea7\u5185\u5bb9\uff0c\u5305\u542b\u5b9e\u6218\u6848\u4f8b\u4e0e\u591a\u79cd\u65b9\u6cd5\uff0c [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3545,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[83],"tags":[],"class_list":["post-3544","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3544","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3544"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3544\/revisions"}],"predecessor-version":[{"id":3546,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3544\/revisions\/3546"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3545"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3544"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3544"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3544"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}