{"id":3937,"date":"2012-11-28T17:54:44","date_gmt":"2012-11-28T08:54:44","guid":{"rendered":"http:\/\/www.moonmile.net\/blog\/?p=3937"},"modified":"2012-11-28T17:56:22","modified_gmt":"2012-11-28T08:56:22","slug":"win8-openstreamforwriteasync-%e3%81%af%e4%b8%8a%e6%9b%b8%e3%81%8d%e3%83%a2%e3%83%bc%e3%83%89%e3%81%a7%e9%96%8b%e3%81%8f%e3%81%ae%e3%81%a7%e6%b3%a8%e6%84%8f%e3%81%9b%e3%82%88","status":"publish","type":"post","link":"https:\/\/www.moonmile.net\/blog\/archives\/3937","title":{"rendered":"[win8] OpenStreamForWriteAsync \u306f\u4e0a\u66f8\u304d\u30e2\u30fc\u30c9\u3067\u958b\u304f\u306e\u3067\u6ce8\u610f\u305b\u3088"},"content":{"rendered":"

StorageFile \u306e Open \u306f\u3001\u901a\u5e38\u306e Open\/Close \u3068\u3061\u3087\u3063\u3068\u9055\u3046 | Moonmile Solutions Blog
\nhttp:\/\/www.moonmile.net\/blog\/archives\/3880<\/a><\/p>\n

\u306e\u7d9a\u304d\u3067\u3059\u3002<\/p>\n

Windows \u30b9\u30c8\u30a2 \u30a2\u30d7\u30ea\u3067\u306f\u3001fopen\/fclose \u306e\u3088\u3046\u306b\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u6307\u5b9a\u3057\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u30b5\u30f3\u30c9\u30dc\u30c3\u30af\u30b9\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u5e38\u306b StorageFile \u30af\u30e9\u30b9\u3092\u4f7f\u3044\u307e\u3059\u3002\u3053\u306e\u30af\u30e9\u30b9\u306f\u3001\u30a2\u30d7\u30ea \u30ed\u30fc\u30ab\u30eb\u306e\u30d5\u30a9\u30eb\u30c0\u304b\u3089\u76f4\u63a5\u4f5c\u308b\u304b\u3001\u30d4\u30c3\u30ab\u30fc\uff08FileSavePicker \u306a\u3069\uff09\u3092\u4f7f\u3063\u3066\u4f5c\u308a\u307e\u3059\u3002<\/p>\n

\u3063\u3066\u306e\u304c\u524d\u56de\u306e\u8a71\u3067\u3001FileSavePicker \u304b\u3089\u623b\u3063\u3066\u304d\u305f\u3068\u304d\u306b\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u304c\u65e2\u306b\u4f5c\u3089\u308c\u3066\u3044\u307e\u3059\u3001\u3063\u3066\u306e\u304c\u3061\u3087\u3063\u3068\u3057\u305f\u300c\u843d\u3068\u3057\u7a74\u300d\u306a\u306e\u3067\u3059\u3002<\/p>\n

\u25a0\u30d4\u30c3\u30ab\u30fc\u3067\u4fdd\u5b58\u5148\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u629e<\/p>\n

\u30d4\u30c3\u30ab\u30fc\u3092\u4f7f\u3063\u3066\u3001\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306b\u4fdd\u5b58\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u3092\u9078\u3093\u3067\u306d\u3001\u3063\u3066\u306e\u304c\u6b21\u306e\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n

\r\nprivate StorageFile _file;\r\n\/\/\/ <summary>\r\n\/\/\/ \u30d5\u30a1\u30a4\u30eb\u9078\u629e\u306e\u307f\r\n\/\/\/ <\/summary>\r\n\/\/\/ <param name="sender"><\/param>\r\n\/\/\/ <param name="e"><\/param>\r\nprivate async void Button_Click_0(object sender, RoutedEventArgs e)\r\n{\r\n\t\/\/ FileSavePicker \u3092\u7528\u610f\u3059\u308b\r\n\tvar picker = new FileSavePicker();\r\n\tpicker.CommitButtonText = "\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b";\r\n\tpicker.DefaultFileExtension = ".txt";\r\n\tpicker.FileTypeChoices.Add("\u30c6\u30ad\u30b9\u30c8\u5f62\u5f0f", new string[] { ".txt" });\r\n\tpicker.SuggestedStartLocation = PickerLocationId.Desktop;\r\n\tpicker.SuggestedFileName = "Sample.txt";\r\n\t\/\/ FileSavePicker \u3092\u51fa\u3057\u3066\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u6307\u5b9a\u3059\u308b\u3002\r\n\tStorageFile file = await picker.PickSaveFileAsync();\r\n\tif (file == null)\r\n\t{\r\n\t\t\/\/ \u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u305f\u3068\u304d\u306f\u4f55\u3082\u3057\u306a\u3044\r\n\t\treturn;\r\n\t}\r\n\t_file = file;\r\n}\r\n<\/pre>\n
\u30d4\u30c3\u30ab\u30fc\u306e PickSaveFileAsync \u30e1\u30bd\u30c3\u30c9\u306e\u623b\u308a\u5024\u306f\u3001StorageFile \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u306e\u3067\u3001\u30ad\u30fc\u30d7\u3057\u3066\u304a\u304f\u3068\u3001\u3042\u3068\u304b\u3089\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u3044\u308f\u3086\u308b\uff12\u5ea6\u76ee\u306b\u300c\u4fdd\u5b58\u300d\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u305f\u3068\u304d\u306b\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u3092\u3057\u306a\u3044\u3001\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002\u4e0a\u66f8\u304d\u4fdd\u5b58\u3063\u3066\u3084\u3064\u3067\u3059\u3002<\/p>\n
\u3053\u3053\u3067\u3001\u4fdd\u5b58\u5148\u306e\u30d5\u30a1\u30a4\u30eb\u3063\u3066\u306e\u306f\u65b0\u898f\u30d5\u30a1\u30a4\u30eb\u3068\u306f\u9650\u3089\u306a\u304f\u3066\u3001\u5b58\u5728\u3059\u308b\u30d5\u30a1\u30a4\u30eb\uff08\u4e2d\u8eab\u304c\u3042\u308b\u30d5\u30a1\u30a4\u30eb\uff09\u3067\u3082 ok \u306a\u308f\u3051\u3067\u3059\u3002\u307e\u3042\u3001\u305d\u3046\u3067\u3059\u3088\u306d\u3002\u306a\u306e\u3067 PickSaveFileAsync \u30e1\u30bd\u30c3\u30c9\u304b\u3089\u306e\u623b\u308a\u306f\u3001<\/p>\n
1.PickSaveFileAsync \u304c\u4f5c\u3063\u305f\u7a7a\u30d5\u30a1\u30a4\u30eb\uff08\u30b5\u30a4\u30ba 0 \u306e\u30d5\u30a1\u30a4\u30eb\uff09
\n2.\u5143\u304b\u3089\u3042\u308b\u3001\u3044\u304f\u3089\u304b\u306e\u30b5\u30a4\u30ba\u306e\u30d5\u30a1\u30a4\u30eb\u3002
\n3.\u5143\u304b\u3089\u3042\u308b\u3001\u30b5\u30a4\u30ba 0 \u306e\u30d5\u30a1\u30a4\u30eb<\/p>\n
\u3053\u3053\u3067\u30011 \u3068 3 \u306e\u533a\u5225\uff08\u65b0\u898f\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u304b\u3001\u65e2\u5b58\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u304b\uff09\u304c\u3064\u304b\u306a\u3044\u306e\u304c\u554f\u984c…\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u3093\u30c3!!! \u3068\u601d\u3063\u305f\u308f\u3051\u3067\u3059\u304c\u3001\u3053\u308c\u304b\u3089\u4e0a\u66f8\u304d\u3057\u3088\u3046\u3068\u3059\u308b\u308f\u3051\u3060\u3057\u3001\u3069\u3063\u3061\u3067\u3082\u69cb\u308f\u306a\u3044\u3093\u3058\u3083\u306a\u3044\uff1f\u3068\u3044\u3046\u306e\u304c\u8a2d\u8a08\u601d\u60f3\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n
\u25a0\u4fdd\u5b58\u3059\u308b\u30e2\u30c7\u30eb<\/p>\n
\u30a2\u30d7\u30ea\u306e\u30c7\u30fc\u30bf\u3092 DataModel \u306b\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n
\r\npublic class DataModel : BindableBase\r\n{\r\n\tprivate int _id;\r\n\tpublic int ID\r\n\t{\r\n\t\tget { return _id; }\r\n\t\tset { _id = value; this.SetProperty(ref this._id, value); }\r\n\t}\r\n\tprivate string _name;\r\n\tpublic string Name\r\n\t{\r\n\t\tget { return _name; }\r\n\t\tset { _name = value; this.SetProperty(ref this._name, value); }\r\n\t}\r\n}\r\n<\/pre>\n
\u753b\u9762\u306e\u307b\u3046\u306b\u306f\u3001\u9069\u5b9c Binding \u3092\u66f8\u304f\u3001\u3068\u3044\u3046\u30d1\u30bf\u30fc\u30f3\u3067\u3059\u306d\u3002
\n\u30af\u30e9\u30b9\u306b\u3057\u3066\u304a\u304f\u3068\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u304c\u697d\u306a\u306e\u3067\u3002Windows \u30b9\u30c8\u30a2 \u30a2\u30d7\u30ea\u306e\u5834\u5408\u306f\u3001DataContractSerializer \u3092\u4f7f\u3046\u3068\u4fbf\u5229\u3067\u3059\u3002<\/p>\n
\u25a0DataContractSerializer \u3092\u4f7f\u3046<\/p>\n
\u30e2\u30c7\u30eb\u30c7\u30fc\u30bf\u3092\u3001\u305d\u306e\u307e\u307e\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u3059\u308b\u306e\u304c\u4e00\u756a\u697d\u3067\u3059\u3002\u65e2\u306b\u7528\u610f\u3055\u308c\u3066\u3044\u308b DataContractSerializer \u3092\u4f7f\u3063\u3066\u3001WriteObject \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066 XML \u5f62\u5f0f\u3067\u66f8\u304d\u8fbc\u3081\u3070 ok\u3067\u3059\u306d\u3002<\/p>\n
\r\nprivate async void Button_Click_1(object sender, RoutedEventArgs e)\r\n{\r\n\tStorageFile file = this._file;\t\/\/ \u9078\u629e\u6e08\u307f\r\n\tvar data = new DataModel()\r\n\t{\r\n\t\tID = 10,\r\n\t\tName = "masuda tomoaki"\r\n\t};\r\n\t\/\/ \u3053\u308c\u306f\u6b63\u5e38\u306b\u52d5\u304f\r\n\tusing (var stream = await file.OpenStreamForWriteAsync())\r\n\t{\r\n\t\tvar serializer = new DataContractSerializer(typeof(DataModel));\r\n\t\tserializer.WriteObject(stream, data);\r\n\t}\r\n}\r\n<\/pre>\n
\u305f\u3060\u3001DataContractSerializer \u30af\u30e9\u30b9\u3067\u66f8\u304d\u51fa\u3059 XML \u3063\u3066\u3001\u6539\u884c\u3068\u304b\u30a4\u30f3\u30c7\u30f3\u30c8\u304c\u3064\u3044\u3066\u3044\u306a\u304f\u3066\u3001\u30c7\u30d0\u30c3\u30b0\u306b\u4e0d\u90fd\u5408\u304c\u3042\u308b\u306e\u3067\u3059\u3002
\n\u306a\u306e\u3067\u3001XmlWriter \u3092\u4f7f\u3048\u3070\u6574\u5f62\u3067\u304d\u308b\u306e\u3067\u306f\uff1f\u3068\u601d\u3063\u305f\u306e\u304c\u3001\u30cf\u30de\u30ea\u3069\u3053\u308d\u3067\u3059\u3002<\/p>\n
\u25a0XmlWriter \u3092\u4f7f\u3046<\/p>\n
XmlWriter \u3092\u4f7f\u3063\u3066\u6574\u5f62\uff08\u6539\u884c\u3084\u30a4\u30f3\u30c7\u30f3\u30c8\uff09\u3092\u4f7f\u3044\u306a\u304c\u3089\u3001\u66f8\u304d\u51fa\u3057\u307e\u3059\u3002<\/p>\n
\r\nprivate async void Button_Click_2(object sender, RoutedEventArgs e)\r\n{\r\n\tStorageFile file = this._file;\t\/\/ \u9078\u629e\u6e08\u307f\r\n\r\n\tvar data = new DataModel()\r\n\t{\r\n\t\tID = 10,\r\n\t\tName = "masuda tomoaki"\r\n\t};\r\n\t\/\/ \u3053\u308c\u306f\u6b63\u5e38\u306b\u52d5\u304f\r\n\tusing (var stream = await file.OpenStreamForWriteAsync())\r\n\t{\r\n\t\tvar serializer = new DataContractSerializer(typeof(DataModel));\r\n\t\t\/\/ \u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u5207\u308a\u8a70\u3081\u308b\r\n\t\tstream.SetLength(0);\t\t\/\/ \u3053\u308c\u304c\u5fc5\u9808\r\n\t\t\/\/ \u30a4\u30f3\u30c7\u30f3\u30c8\u7b49\u3092\u8a2d\u5b9a\u3059\u308b\r\n\t\tvar st = new XmlWriterSettings();\r\n\t\tst.Indent = true;\r\n\t\tst.IndentChars = "\\t";\r\n\t\tst.Async = false;        \/\/ \u66f8\u304d\u8fbc\u307f\u6642\u306b async \u3092\u4f7f\u308f\u306a\u3044\r\n\t\tusing (var xw = XmlWriter.Create(stream, st))\r\n\t\t{\r\n\t\t\tserializer.WriteObject(xw, data);\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
\u3053\u306e\u4e2d\u3067\u300cstream.SetLength(0)\u300d\u3063\u3066\u306e\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3001\u30d5\u30a1\u30a4\u30eb\u306f\u300c\u65b0\u898f\u3060\u300d\u3068\u601d\u3063\u3066\u3044\u308b\u3068\u3001\u5b9f\u306f\u9055\u3063\u3066\u3044\u3066\u300c\u65e2\u5b58\u306e\u30d5\u30a1\u30a4\u30eb\u300d\u304b\u3082\u3057\u308c\u306a\u3044\u306e\u3067\u3059\u3002\u3067\u3001\u65e2\u5b58\u306e\u30d5\u30a1\u30a4\u30eb\u3092 OpenStreamForWriteAsync \u30e1\u30bd\u30c3\u30c9\u3067\u958b\u304f\u3068\u3001\u4e2d\u8eab\u306f\u305d\u306e\u307e\u307e\u30aa\u30fc\u30d7\u30f3\u3063\u3066\u5177\u5408\u306a\u308f\u3051\u3067\u3059\u3002<\/p>\n
\u306a\u306e\u3067\u3001\u3082\u3057\u65e2\u5b58\u306e\u30d5\u30a1\u30a4\u30eb\u3088\u308a\u3082\u77ed\u3044 XML \u3092\u66f8\u304d\u8fbc\u3093\u3060\u5834\u5408\u3001\u6700\u5f8c\u306e\u9589\u3058\u30bf\u30b0\u306e\u5f8c\u308d\u306b\u30b4\u30df\u304c\u6b8b\u308b\u3093\u3067\u3059\u3088\u306d…\u3053\u308c\u306f\u304b\u306a\u308a\u306f\u307e\u308a\u307e\u3057\u305f\u3002
\nfopen \u95a2\u6570\u3060\u3068\u3001\u65b0\u898f\u30aa\u30fc\u30d7\u30f3\u306a\u306e\u304b\u3001\u8ffd\u52a0\u30aa\u30fc\u30d7\u30f3\u306a\u306e\u304b\u306e\u9078\u629e\u304c\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u5b9f\u306f OpenStreamForWriteAsync \u306b\u306f\u3001\u305d\u306e\u9078\u629e\u80a2\u304c\u306a\u3044\u306e\u3067\u3059\u3002\u3055\u3089\u306b\u3001PickSaveFileAsync \u3067\u306f\u3001\u65b0\u898f\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3082 0 \u30d0\u30a4\u30c8\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u3067\u304d\u308b\u3057\u3002
\nOpenStreamForWriteAsync \u306e\u5834\u5408\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u30aa\u30fc\u30d7\u30f3\u3059\u308b\u3068\u3001\u5148\u982d\u306b\u30ab\u30fc\u30bd\u30eb\u4f4d\u7f6e\u304c\u7f6e\u304b\u308c\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u306f\u65e2\u5b58\u30d5\u30a1\u30a4\u30eb\u3092\u30aa\u30fc\u30d7\u30f3\u3057\u305f\u3068\u304d\u3082\u5148\u982d\u306b\u30ab\u30fc\u30bd\u30eb\u304c\u3042\u308a\u307e\u3059\u3002\u3063\u3066\u306e\u304c\u843d\u3068\u3057\u7a74\u3067\u3059\u306d\u3002<\/p>\n
\u306a\u306e\u3067\u3001\u3053\u306e\u5909\u306a\u72b6\u614b\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u300c\u65b0\u898f\u30d5\u30a1\u30a4\u30eb\u300d\u3068\u3057\u3066\u6271\u3046\u305f\u3081\u306b\u306f\u300cstream.SetLength(0)\u300d\u306e\u3088\u3046\u306b\u3001\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u9577\u3055\u3092 0 \u306b\u521d\u671f\u5316\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3059\u3002<\/p>\n
\u25a0\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58<\/p>\n
\u305d\u3093\u306a\u8a33\u3067\u3001\u30e1\u30e2\u5e33\u306e\u3088\u3046\u306a\u30c6\u30ad\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u6271\u3046\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u3068\u66f4\u306b\u306f\u307e\u308a\u307e\u3059\u3002<\/p>\n
\r\nprivate async void Button_Click_3(object sender, RoutedEventArgs e)\r\n{\r\n\tStorageFile file = this._file;\t\/\/ \u9078\u629e\u6e08\u307f\r\n\t\/\/ \u5b9f\u306f\u4e0a\u66f8\u304d\u30e2\u30fc\u30c9\u3067\u30aa\u30fc\u30d7\u30f3\u3057\u3066\u3044\u308b\r\n\tusing (var stream = await file.OpenStreamForWriteAsync())\r\n\t{\r\n\t\t\/\/ \u65b0\u898f\u6271\u3044\u306e\u5834\u5408\u306f\u3001\u30b5\u30a4\u30ba\u3092 0 \u306b\u3059\u308b\u5fc5\u8981\u3042\u308a\r\n\t\tstream.SetLength(0);\r\n\r\n\t\tusing (var writer = new StreamWriter(stream))\r\n\t\t{\r\n\t\t\t\/\/ \u30c6\u30ad\u30b9\u30c8\u3092\u305d\u306e\u307e\u307e\u66f8\u304d\u8fbc\u307f\r\n\t\t\twriter.Write(text1.Text);\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
\u6bce\u56de\u3001\u5168\u4f53\u3092\u4fdd\u5b58\u3059\u308b\u304b\u3089\u3001StreamWriter \u30af\u30e9\u30b9\u306e Write \u30e1\u30bd\u30c3\u30c9\u3067\u66f8\u304d\u51fa\u305b\u3070 ok … \u3068\u601d\u3044\u304d\u3084\u3001\u3053\u306e\u300cstream.SetLength(0)\u300d\u3092\u5fd8\u308c\u308b\u3068\u3001\u3082\u3068\u3082\u3068\u3042\u3063\u305f\u30d5\u30a1\u30a4\u30eb\u9577\u3055\u3088\u308a\u3082\u6587\u7ae0\uff08text1.Text\uff09\u306e\u65b9\u304c\u77ed\u3044\u5834\u5408\u306b\u306f\u3001\u5f8c\u308d\u306b\u3054\u307f\u304c\u6b8b\u308b\u306e\u3067\u3059\u3002<\/p>\n
\u25a0Stream \u306b\u3082 StreamWriter \u306b\u3082 Close \u304c\u306a\u3044<\/p>\n
\u3067\u3001Stream \u3082 StreamWriter \u3082 Close \u304c\u3042\u308a\u307e\u305b\u3093\u3002Open \u3057\u305f\u3089 Close \u3057\u305f\u304f\u306a\u308b\u3082\u306e\u306a\u306e\u3067\u3059\u304c\u3001\u307e\u3042\u3001\u958b\u304d\u3063\u3071\u306a\u3057\u3067\u3044\u3044\u307f\u305f\u3044\u3067\u3059\u3002\u3068\u3044\u3046\u304b\u3001using \u3067\u7bc4\u56f2\u3092\u6c7a\u3081\u306a\u3044\u3068\u30c0\u30e1\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002
\n\u30c6\u30ad\u30b9\u30c8\u306e\u66f8\u304d\u8fbc\u307f\u3060\u3068\u3001StreamWriter \u30af\u30e9\u30b9\u306e using \u3067\u629c\u3051\u308b\u3068\u304d\u306b\u3001\u540c\u6642\u306b Stream \u306e\u307b\u3046\u3082\u9589\u3058\u3066\u304f\u308c\u307e\u3059…\u3068\u4e91\u3044\u307e\u3059\u304b\u3001\u9589\u3058\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u4ee5\u524d\u304b\u3089\u306e\u4ed5\u69d8\u3060\u3063\u305f\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u3002<\/p>\n
\u306a\u306e\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u306e\u5f8c\u308d\u3092\u5207\u308a\u8a70\u3081\u3088\u3046\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u66f8\u304f\u3068\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\r\nprivate async void Button_Click_3(object sender, RoutedEventArgs e)\r\n{\r\n\tStorageFile file = this._file;\t\/\/ \u9078\u629e\u6e08\u307f\r\n\t\/\/ \u5b9f\u306f\u4e0a\u66f8\u304d\u30e2\u30fc\u30c9\u3067\u30aa\u30fc\u30d7\u30f3\u3057\u3066\u3044\u308b\r\n\tusing (var stream = await file.OpenStreamForWriteAsync())\r\n\t{\r\n\t\tusing (var writer = new StreamWriter(stream))\r\n\t\t{\r\n\t\t\t\/\/ \u30c6\u30ad\u30b9\u30c8\u3092\u305d\u306e\u307e\u307e\u66f8\u304d\u8fbc\u307f\r\n\t\t\twriter.Write(text1.Text);\r\n\t\t}\r\n\t\t\/\/ \u73fe\u5728\u4f4d\u7f6e\u3067\u5207\u308a\u8a70\u3081\u308b\r\n\t\tstream.SetLength( stream.Position );\t\/\/ \u2605\r\n\t}\r\n}\r\n<\/pre>\n
\u2605\u306e\u4f4d\u7f6e\u3067\u306f\u3001stream \u304c\u9589\u3058\u3089\u308c\u3061\u3083\u3063\u3066\u3044\u308b\u306e\u3067\u3001SetLength \u3067\u304d\u307e\u305b\u3093\u3002
\n\u4e0b\u8a18\u306e\u3088\u3046\u306b\u3001StreamWriter \u306e\u30d6\u30ed\u30c3\u30af\u3067 SetLength \u3059\u308b\u3068\u3046\u307e\u304f\u52d5\u304d\u307e\u3059\u3002<\/p>\n
\r\nprivate async void Button_Click_3(object sender, RoutedEventArgs e)\r\n{\r\n\tStorageFile file = this._file;\t\/\/ \u9078\u629e\u6e08\u307f\r\n\t\/\/ \u5b9f\u306f\u4e0a\u66f8\u304d\u30e2\u30fc\u30c9\u3067\u30aa\u30fc\u30d7\u30f3\u3057\u3066\u3044\u308b\r\n\tusing (var stream = await file.OpenStreamForWriteAsync())\r\n\t{\r\n\t\tusing (var writer = new StreamWriter(stream))\r\n\t\t{\r\n\t\t\t\/\/ \u30c6\u30ad\u30b9\u30c8\u3092\u305d\u306e\u307e\u307e\u66f8\u304d\u8fbc\u307f\r\n\t\t\twriter.Write(text1.Text);\r\n\t\t\t\/\/ \u73fe\u5728\u4f4d\u7f6e\u3067\u5207\u308a\u8a70\u3081\u308b\r\n\t\t\tstream.SetLength( stream.Position );\t\/\/ \u2605\r\n\t\t}\r\n\t}\r\n}\r\n<\/pre>\n
\u3053\u308c\u3082\u306a\u3093\u304b\u5909\u306a\u4ed5\u69d8\u3067\u3059\u3088\u306d…\u3068\u601d\u3044\u3064\u3064\u3001\u307e\u3041\u3001\u3044\u3044\u304b\u3068\u3002<\/p>\n
OpenStreamForWriteAsync \u30e1\u30bd\u30c3\u30c9\u306b\u3001\u65b0\u898f\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u8ffd\u52a0\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u3042\u308c\u3070\u308f\u304b\u308a\u3084\u3059\u3044\u3093\u3067\u3059\u304c\u306d\u3002<\/p>\n
\u30fbOpenStreamForNewWriteAsync()
\n\u30fbOpenStreamForAppendWriteAsync()<\/p>\n
\u306e\u3088\u3046\u306a\u540d\u524d\u306b\u3059\u308c\u3070\u3088\u304b\u3063\u305f\u306e\u306b\u3002\u3002\u3002\u307e\u3042\u3001\u62e1\u5f35\u30e1\u30bd\u30c3\u30c9\u30922,3\u884c\u66f8\u3051\u3070\u3001\u6e08\u3080\u306f\u306a\u3057\u306a\u3093\u3067\u3059\u304c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
StorageFile \u306e Open \u306f\u3001\u901a\u5e38\u306e Open\/Close \u3068\u3061\u3087\u3063\u3068\u9055\u3046 | Moonmile Solutions Blog http:\/\/www.moonmile.net\/blog\/archives\/38 … \u7d9a\u304d\u3092\u8aad\u3080 →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[23,44],"tags":[],"class_list":["post-3937","post","type-post","status-publish","format-standard","hentry","category-csharp","category-windows-8"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/comments?post=3937"}],"version-history":[{"count":2,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3937\/revisions"}],"predecessor-version":[{"id":3939,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/posts\/3937\/revisions\/3939"}],"wp:attachment":[{"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/media?parent=3937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/categories?post=3937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.moonmile.net\/blog\/wp-json\/wp\/v2\/tags?post=3937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}