{"id":8271,"date":"2019-01-10T10:37:32","date_gmt":"2019-01-10T01:37:32","guid":{"rendered":"https:\/\/elleneast.com\/?p=8271"},"modified":"2019-01-10T10:39:03","modified_gmt":"2019-01-10T01:39:03","slug":"%e3%80%90vb-net%e3%80%91%e3%80%90wpf%e3%80%91%e8%b5%b7%e5%8b%95%e6%99%82%e3%81%ab%e9%85%8d%e7%bd%ae%e6%b8%88%e3%81%bf%e3%81%ae%e3%82%b3%e3%83%b3%e3%83%88%e3%83%ad%e3%83%bc%e3%83%ab%e3%81%a7-system-nul","status":"publish","type":"post","link":"https:\/\/elleneast.com\/?p=8271","title":{"rendered":"\u3010VB.NET\u3011\u3010WPF\u3011\u8d77\u52d5\u6642\u306b\u914d\u7f6e\u6e08\u307f\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067 NullReferenceException \u304c\u767a\u751f\u3059\u308b"},"content":{"rendered":"<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8d77\u52d5\u6642\u306b\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u914d\u7f6e\u6e08\u307f\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n<div class=\"sng-box box15\">\n<p>\u30e6\u30fc\u30b6\u30fc\u304c\u51e6\u7406\u3057\u3066\u3044\u306a\u3044\u4f8b\u5916<\/p>\n<p>System.NullReferenceException: \u2018\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8 \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u2019<\/p>\n<\/div>\n<p><a href=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException2.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8275 bigshadow\" src=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException2.png\" alt=\"\" width=\"758\" height=\"266\" srcset=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException2.png 758w, https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException2-300x105.png 300w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\"><\/a><\/p>\n<p>\u4e0a\u56f3\u3067\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u3066\u3044\u308b\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306f\u914d\u7f6e\u6e08\u307f\u306e DatePicker \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\uff08dateUntilThen \u3068\u3044\u3046\u540d\u524d\uff09\u3067\u3059\u3002\u305d\u3057\u3066\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u3066\u3044\u308b\u5834\u6240\u306f\u3001\u3053\u308c\u3082\u914d\u7f6e\u6e08\u307f\u306e RadioButton \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306e Checked \u30a4\u30d9\u30f3\u30c8\u5185\u3067\u3059\u3002DatePicker \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u300cdateUntilThen\u300d\u306b\u5b9f\u614b\u304c\u7121\u3044\u306e\u306b\uff08\u4e2d\u8eab\u304c Nothing \u306a\u306e\u306b\uff09\u5024\u3092\u8a2d\u5b9a\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3067\u3082\u3001\u914d\u7f6e\u6e08\u307f\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306a\u3089\u3070\u3001\u5b9f\u614b\u304c\u3042\u308b\u306f\u305a\u306a\u306e\u306b\u30fb\u30fb\u30fb\u5909\u3060\u306a\u3068\u601d\u3044\u3064\u3064\u3001Loaded \u306e\u6700\u521d\u306e\u884c\u306b\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u3092\u8a2d\u5b9a\u3057\u3066\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u8d77\u52d5\u3057\u3066\u307f\u305f\u3089\u3001\u305d\u306e\u30d6\u30ec\u30fc\u30af\u30dd\u30a4\u30f3\u30c8\u304c\u7121\u8996\u3055\u308c\u3066\uff08\u6b63\u78ba\u306b\u306f\u300c\u7121\u8996\u3055\u308c\u305f\u3088\u3046\u306b\u898b\u3048\u305f\u300d\uff09\u3044\u304d\u306a\u308a\u524d\u8ff0\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001Loaded \u30a4\u30d9\u30f3\u30c8\u3088\u308a\u3082\u524d\u306b\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e Checked \u30a4\u30d9\u30f3\u30c8\u304c\u5148\u306b\u767a\u751f\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u3067\u3082\u79c1\u306f\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306f\u3069\u3053\u306b\u3082\u66f8\u3044\u3066\u306a\u3044\u306e\u3067\u3001\u3069\u3046\u3084\u3089\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8d77\u52d5\u6642\u306b\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u304c\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u69cb\u7bc9\u3055\u308c\u308b\u904e\u7a0b\u3067\u81ea\u52d5\u7684\u306b Checked \u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u304a\u305d\u3089\u304f\u305d\u3046\u3044\u3046\u4ed5\u69d8\u306a\u306e\u3067\u3057\u3087\u3046\u3002<\/p>\n<p>\u3068\u3044\u3046\u308f\u3051\u3067\u3001DatePicker \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u300cdateUntilThen\u300d\u306e\u4e2d\u8eab\u304c\u7121\u3044\uff08Nothing\uff09\u3068\u304d\u306b\u30e9\u30b8\u30aa\u30dc\u30bf\u30f3\u306e Checked \u30a4\u30d9\u30f3\u30c8\u304c\u767a\u751f\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u3001\u30b3\u30fc\u30c9\u3092 If xxxxx IsNot Nothing Then \u2026 End If \u3067\u56f2\u3080\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u3067\u89e3\u6c7a\u3002<\/p>\n<p><a href=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException3.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-8276 bigshadow\" src=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException3.png\" alt=\"\" width=\"458\" height=\"248\" srcset=\"https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException3.png 458w, https:\/\/elleneast.com\/wp\/wp-content\/uploads\/programming_topics\/NullReferenceException3-300x162.png 300w\" sizes=\"auto, (max-width: 458px) 100vw, 458px\"><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8d77\u52d5\u6642\u306b\u3001\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\u914d\u7f6e\u6e08\u307f\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3067\u4e0b\u8a18\u306e\u3088\u3046\u306a\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002 \u30e6\u30fc\u30b6\u30fc\u304c\u51e6\u7406\u3057\u3066\u3044\u306a\u3044\u4f8b\u5916 System.NullReferenceException: \u2018\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u53c2\u7167\u304c\u30aa\u30d6\u30b8\u30a7 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":2656,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[57],"tags":[60,62],"class_list":{"0":"post-8271","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-57","8":"tag-vb-net","9":"tag-wpf"},"_links":{"self":[{"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/posts\/8271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/elleneast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8271"}],"version-history":[{"count":3,"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/posts\/8271\/revisions"}],"predecessor-version":[{"id":8279,"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/posts\/8271\/revisions\/8279"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/elleneast.com\/index.php?rest_route=\/wp\/v2\/media\/2656"}],"wp:attachment":[{"href":"https:\/\/elleneast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elleneast.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elleneast.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}