{"id":815,"date":"2022-02-21T07:00:00","date_gmt":"2022-02-20T22:00:00","guid":{"rendered":"https:\/\/itinfotat.com\/?p=815"},"modified":"2022-02-03T07:21:42","modified_gmt":"2022-02-02T22:21:42","slug":"vb6%e3%81%a8vb-net%e3%81%ae%e9%81%95%e3%81%845%ef%bc%88dbnull%e3%81%a8null%e3%81%ae%e4%bb%a3%e5%85%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/itinfotat.com\/?p=815","title":{"rendered":"VB6\u3068VB.Net\u306e\u9055\u30445\uff08DBNull\u3068null\u306e\u4ee3\u5165\uff09"},"content":{"rendered":"\n<p>SQLServer\u3067null\u306b\u306a\u3063\u3066\u3044\u308b\u9805\u76ee\u306e\u5024\u3092ADO(VB.Net\u306fADO.Net)\u3067\u8aad\u307f\u8fbc\u3080\u3068VB6\u306fnull\u3001VB.Net\u306fDBNull(Convert.DBNull)\u306b\u306a\u308a\u307e\u3059\u3002<br>\u305d\u3053\u3067\u4e0b\u8a18\u306e\u578b\u306e\u5909\u6570\u306bVB6\u306fnull\u3092VB.Net\u306fDBNull\u3092\u4ee3\u5165\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u304b\u8a66\u3057\u3066\u307f\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr><th>\u578b<\/th><th> Visual Basic6 <\/th><th> Visual Basic.Net <\/th><\/tr><\/thead><tbody><tr><td><\/td><td>Visual Basic6<\/td><td>Visual Basic.Net<\/td><\/tr><tr><td>Boolean <\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Byte <\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Char<\/td><td>\u00d7 <\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Currency<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u00d7  <\/td><\/tr><tr><td>Date<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Double<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Decimal<\/td><td>\u00d7  <\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Integer<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Long<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Object<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f <\/td><td>DBNull<\/td><\/tr><tr><td>Short<\/td><td>\u00d7  <\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>Single<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><tr><td>String<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><td>\u30a8\u30e9\u30fc\u767a\u751f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u3010\u52d5\u4f5c\u78ba\u8a8d\u74b0\u5883\u3011<br>    \u30fb.Net\u5074<br>\u3000  OS\uff1aWindows11 Pro 21H2 <br>  \u3000Visual Studio\uff1a2019<br>      .Net Framework \uff1a 4.7.2<br>    \u30fbVB6\u5074<br> \u3000  OS\uff1aWindows7<br>  \u3000 Visual Studio\uff1a6  <\/p>\n\n\n\n<p><script type=\"text\/javascript\" src=\"\/\/rot5.a8.net\/jsa\/71990cbe3032408438ae198d7bb02a4a\/c6f057b86584942e415435ffb1fa93d4.js\"><\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQLServer\u3067null\u306b\u306a\u3063\u3066\u3044\u308b\u9805\u76ee\u306e\u5024\u3092ADO(VB.Net\u306fADO.Net)\u3067\u8aad\u307f\u8fbc\u3080\u3068VB6\u306fnull\u3001VB.Net\u306fDBNull(Convert.DBNull)\u306b\u306a\u308a\u307e\u3059\u3002\u305d\u3053\u3067\u4e0b\u8a18\u306e\u578b\u306e\u5909\u6570\u306bVB6\u306fn &hellip; <a href=\"https:\/\/itinfotat.com\/?p=815\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;VB6\u3068VB.Net\u306e\u9055\u30445\uff08DBNull\u3068null\u306e\u4ee3\u5165\uff09&#8221;\u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56,29,57,4,48,55],"tags":[35,59,23],"class_list":["post-815","post","type-post","status-publish","format-standard","hentry","category-visual-basic","category-visual-basic-net","category-visual-basic6","category-windows","category-windows11","category-windows7","tag-visual-basic-net","tag-visual-basic6","tag-windows"],"_links":{"self":[{"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/posts\/815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itinfotat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=815"}],"version-history":[{"count":6,"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/posts\/815\/revisions"}],"predecessor-version":[{"id":1527,"href":"https:\/\/itinfotat.com\/index.php?rest_route=\/wp\/v2\/posts\/815\/revisions\/1527"}],"wp:attachment":[{"href":"https:\/\/itinfotat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itinfotat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itinfotat.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}