{"id":171507,"date":"2024-11-07T03:19:18","date_gmt":"2024-11-06T19:19:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171507\/"},"modified":"2024-11-07T03:19:19","modified_gmt":"2024-11-06T19:19:19","slug":"vb-%e7%a8%8b%e5%ba%8f%e4%b8%ad%ef%bc%8c%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%95%b0%e5%b8%b8%ef%bc%9f-vb-%e9%80%a3%e6%95%b8%e6%93%9a%e5%ba%ab%e7%95%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171507\/","title":{"rendered":"VB \u7a0b\u5e8f\u4e2d\uff0c\u5982\u4f55\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\uff1f (vb \u9023\u6578\u64da\u5eab\u7570\u5e38\u8655\u7406)"},"content":{"rendered":"<h1 id=\"vb-%e7%a8%8b%e5%ba%8f%e4%b8%ad%ef%bc%8c%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%95%b0%e5%b8%b8%ef%bc%9f-OftYWrcQYK\">VB \u7a0b\u5e8f\u4e2d\uff0c\u5982\u4f55\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\uff1f<\/h1>\n<p>\u5728\u958b\u767c VB\uff08Visual Basic\uff09\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u6578\u64da\u5eab\u9023\u63a5\u662f\u81f3\u95dc\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7136\u800c\uff0c\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\u662f\u958b\u767c\u904e\u7a0b\u4e2d\u5e38\u898b\u7684\u554f\u984c\u4e4b\u4e00\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 VB \u7a0b\u5e8f\u4e2d\u6709\u6548\u5730\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%95%b0%e5%b8%b8%e7%9a%84%e5%b8%b8%e8%a6%8b%e5%8e%9f%e5%9b%a0-OftYWrcQYK\">\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\u7684\u5e38\u898b\u539f\u56e0<\/h2>\n<p>\u5728\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u6642\uff0c\u53ef\u80fd\u6703\u9047\u5230\u591a\u7a2e\u7570\u5e38\u60c5\u6cc1\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u65bc\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u5eab\u670d\u52d9\u5668\u672a\u555f\u52d5\u6216\u7121\u6cd5\u8a2a\u554f<\/li>\n<li>\u9023\u63a5\u5b57\u7b26\u4e32\u914d\u7f6e\u932f\u8aa4<\/li>\n<li>\u7db2\u7d61\u554f\u984c\u5c0e\u81f4\u7121\u6cd5\u9023\u63a5<\/li>\n<li>\u6578\u64da\u5eab\u7528\u6236\u540d\u6216\u5bc6\u78bc\u932f\u8aa4<\/li>\n<li>\u6578\u64da\u5eab\u9054\u5230\u6700\u5927\u9023\u63a5\u6578<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%95%b0%e5%b8%b8-OftYWrcQYK\">\u5982\u4f55\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38<\/h2>\n<p>\u5728 VB \u7a0b\u5e8f\u4e2d\uff0c\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\u7684\u6700\u4f73\u5be6\u8e10\u662f\u4f7f\u7528 <code>Try...Catch...Finally<\/code> \u7d50\u69cb\u3002\u9019\u7a2e\u7d50\u69cb\u5141\u8a31\u958b\u767c\u8005\u6355\u7372\u7570\u5e38\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nDim connectionString As String = \"Data Source=server;Initial Catalog=database;User ID=username;Password=password;\"\nDim connection As SqlConnection = New SqlConnection(connectionString)\n\nTry\n    connection.Open()\n    ' \u57f7\u884c\u6578\u64da\u5eab\u64cd\u4f5c\nCatch ex As SqlException\n    ' \u8655\u7406 SQL \u7570\u5e38\n    MessageBox.Show(\"\u6578\u64da\u5eab\u9023\u63a5\u5931\u6557: \" &amp; ex.Message)\nCatch ex As Exception\n    ' \u8655\u7406\u5176\u4ed6\u7570\u5e38\n    MessageBox.Show(\"\u767c\u751f\u932f\u8aa4: \" &amp; ex.Message)\nFinally\n    If connection IsNot Nothing Then\n        connection.Close()\n    End If\nEnd Try\n<\/code><\/pre>\n<h3 id=\"%e7%95%b0%e5%b8%b8%e8%99%95%e7%90%86%e7%9a%84%e5%85%b7%e9%ab%94%e6%ad%a5%e9%a9%9f-OftYWrcQYK\">\u7570\u5e38\u8655\u7406\u7684\u5177\u9ad4\u6b65\u9a5f<\/h3>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u7570\u5e38\u8655\u7406\u7684\u5177\u9ad4\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li><strong>\u5efa\u7acb\u9023\u63a5\uff1a<\/strong>\u4f7f\u7528\u6b63\u78ba\u7684\u9023\u63a5\u5b57\u7b26\u4e32\u4f86\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li><strong>\u5617\u8a66\u6253\u958b\u9023\u63a5\uff1a<\/strong>\u5728 <code>Try<\/code> \u5340\u584a\u4e2d\u5617\u8a66\u6253\u958b\u9023\u63a5\uff0c\u4e26\u57f7\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6355\u7372\u7570\u5e38\uff1a<\/strong>\u4f7f\u7528 <code>Catch<\/code> \u5340\u584a\u6355\u7372 <code>SqlException<\/code> \u548c\u5176\u4ed6\u7570\u5e38\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li><strong>\u6e05\u7406\u8cc7\u6e90\uff1a<\/strong>\u5728 <code>Finally<\/code> \u5340\u584a\u4e2d\u78ba\u4fdd\u9023\u63a5\u88ab\u95dc\u9589\uff0c\u7121\u8ad6\u662f\u5426\u767c\u751f\u7570\u5e38\u3002<\/li>\n<\/ol>\n<h2 id=\"%e5%a2%9e%e5%bc%b7%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%9a%84%e7%a9%a9%e5%ae%9a%e6%80%a7-OftYWrcQYK\">\u589e\u5f37\u6578\u64da\u5eab\u9023\u63a5\u7684\u7a69\u5b9a\u6027<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u7570\u5e38\u8655\u7406\uff0c\u9084\u53ef\u4ee5\u63a1\u53d6\u4e00\u4e9b\u63aa\u65bd\u4f86\u589e\u5f37\u6578\u64da\u5eab\u9023\u63a5\u7684\u7a69\u5b9a\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u9023\u63a5\u6c60\uff1a<\/strong>\u9023\u63a5\u6c60\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u9023\u63a5\u7684\u6548\u7387\uff0c\u6e1b\u5c11\u9023\u63a5\u5efa\u7acb\u7684\u958b\u92b7\u3002<\/li>\n<li><strong>\u8a2d\u7f6e\u91cd\u8a66\u6a5f\u5236\uff1a<\/strong>\u5728\u6355\u7372\u5230\u7279\u5b9a\u7570\u5e38\u6642\uff0c\u53ef\u4ee5\u8a2d\u7f6e\u91cd\u8a66\u6a5f\u5236\uff0c\u5617\u8a66\u91cd\u65b0\u9023\u63a5\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u8a18\u9304\uff1a<\/strong>\u8a18\u9304\u7570\u5e38\u4fe1\u606f\u4ee5\u4fbf\u5f8c\u7e8c\u5206\u6790\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-OftYWrcQYK\">\u7d50\u8ad6<\/h2>\n<p>\u5728 VB \u7a0b\u5e8f\u4e2d\uff0c\u59a5\u5584\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\u662f\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7a69\u5b9a\u904b\u884c\u7684\u95dc\u9375\u3002\u901a\u904e\u4f7f\u7528 <code>Try...Catch...Finally<\/code> \u7d50\u69cb\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u6355\u7372\u548c\u8655\u7406\u7570\u5e38\uff0c\u4e26\u63a1\u53d6\u5fc5\u8981\u7684\u63aa\u65bd\u4f86\u589e\u5f37\u9023\u63a5\u7684\u7a69\u5b9a\u6027\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\uff0c\u9084\u80fd\u6e1b\u5c11\u56e0\u6578\u64da\u5eab\u554f\u984c\u800c\u5c0e\u81f4\u7684\u696d\u52d9\u640d\u5931\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">VPS<\/a> \u548c\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728 VB \u7a0b\u5e8f\u4e2d\u6709\u6548\u8655\u7406\u6578\u64da\u5eab\u9023\u63a5\u7570\u5e38\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u5b89\u5168\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-171507","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171507","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=171507"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171507\/revisions"}],"predecessor-version":[{"id":171508,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/171507\/revisions\/171508"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=171507"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=171507"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=171507"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}