{"id":144701,"date":"2024-11-01T09:43:51","date_gmt":"2024-11-01T01:43:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/144701\/"},"modified":"2024-11-01T09:43:52","modified_gmt":"2024-11-01T01:43:52","slug":"vb-%e7%a8%8b%e5%ba%8f%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e5%87%ba%e7%8f%be%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e5%95%8f%e9%a1%8c%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95-vb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/144701\/","title":{"rendered":"VB \u7a0b\u5e8f\u5beb\u5165\u6578\u64da\u5eab\u6587\u4ef6\u51fa\u73fe\u5167\u5b58\u4e0d\u8db3\u554f\u984c\u89e3\u6c7a\u65b9\u6cd5 (vb \u6578\u64da\u5eab\u5beb\u5165\u6587\u4ef6 \u5167\u5b58\u4e0d\u8db3)"},"content":{"rendered":"<h1 id=\"vb-%e7%a8%8b%e5%ba%8f%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%87%e4%bb%b6%e5%87%ba%e7%8f%be%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e5%95%8f%e9%a1%8c%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95-TkvYGPuqfz\">VB \u7a0b\u5e8f\u5beb\u5165\u6578\u64da\u5eab\u6587\u4ef6\u51fa\u73fe\u5167\u5b58\u4e0d\u8db3\u554f\u984c\u89e3\u6c7a\u65b9\u6cd5<\/h1>\n<p>\u5728\u958b\u767c VB (Visual Basic) \u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u7d93\u5e38\u9700\u8981\u5c07\u6578\u64da\u5beb\u5165\u6578\u64da\u5eab\u6587\u4ef6\u3002\u7136\u800c\uff0c\u7576\u6578\u64da\u91cf\u8f03\u5927\u6216\u7cfb\u7d71\u8cc7\u6e90\u6709\u9650\u6642\uff0c\u53ef\u80fd\u6703\u51fa\u73fe\u5167\u5b58\u4e0d\u8db3\u7684\u554f\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u4e00\u554f\u984c\u7684\u6210\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6cd5\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u5167\u5b58\uff0c\u78ba\u4fdd\u6578\u64da\u5beb\u5165\u904e\u7a0b\u7684\u9806\u5229\u9032\u884c\u3002<\/p>\n<h2 id=\"%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e7%9a%84%e5%8e%9f%e5%9b%a0-TkvYGPuqfz\">\u5167\u5b58\u4e0d\u8db3\u7684\u539f\u56e0<\/h2>\n<p>\u5167\u5b58\u4e0d\u8db3\u7684\u554f\u984c\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u500b\u56e0\u7d20\u5f15\u8d77\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u91cf\u904e\u5927\uff1a<\/strong>\u7576\u4e00\u6b21\u6027\u5beb\u5165\u7684\u6578\u64da\u91cf\u904e\u5927\u6642\uff0c\u53ef\u80fd\u6703\u8d85\u51fa\u7cfb\u7d71\u53ef\u7528\u5167\u5b58\u7684\u9650\u5236\u3002<\/li>\n<li><strong>\u8cc7\u6e90\u7ba1\u7406\u4e0d\u7576\uff1a<\/strong>\u5982\u679c\u5728\u7a0b\u5e8f\u4e2d\u672a\u80fd\u6b63\u78ba\u91cb\u653e\u4e0d\u518d\u4f7f\u7528\u7684\u8cc7\u6e90\uff0c\u5c07\u5c0e\u81f4\u5167\u5b58\u6cc4\u6f0f\uff0c\u6700\u7d42\u5c0e\u81f4\u5167\u5b58\u4e0d\u8db3\u3002<\/li>\n<li><strong>\u7cfb\u7d71\u914d\u7f6e\u554f\u984c\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u7cfb\u7d71\u7684\u786c\u4ef6\u914d\u7f6e\uff08\u5982 RAM \u5927\u5c0f\uff09\u53ef\u80fd\u7121\u6cd5\u6eff\u8db3\u61c9\u7528\u7a0b\u5e8f\u7684\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e5%85%a7%e5%ad%98%e4%b8%8d%e8%b6%b3%e5%95%8f%e9%a1%8c%e7%9a%84%e6%96%b9%e6%b3%95-TkvYGPuqfz\">\u89e3\u6c7a\u5167\u5b58\u4e0d\u8db3\u554f\u984c\u7684\u65b9\u6cd5<\/h2>\n<h3 id=\"1-%e5%88%86%e6%89%b9%e5%af%ab%e5%85%a5%e6%95%b8%e6%93%9a-TkvYGPuqfz\">1. \u5206\u6279\u5beb\u5165\u6578\u64da<\/h3>\n<p>\u70ba\u4e86\u907f\u514d\u4e00\u6b21\u6027\u5beb\u5165\u904e\u591a\u6578\u64da\u5c0e\u81f4\u5167\u5b58\u4e0d\u8db3\uff0c\u53ef\u4ee5\u8003\u616e\u5c07\u6578\u64da\u5206\u6279\u5beb\u5165\u3002\u4f8b\u5982\uff0c\u5c07\u6578\u64da\u5206\u6210\u591a\u500b\u5c0f\u584a\uff0c\u6bcf\u6b21\u53ea\u5beb\u5165\u4e00\u90e8\u5206\uff0c\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u6e1b\u5c11\u5167\u5b58\u7684\u4f7f\u7528\u3002<\/p>\n<pre><code>\nDim batchSize As Integer = 100\nDim totalRecords As Integer = GetTotalRecords()\nFor i As Integer = 0 To totalRecords Step batchSize\n    Dim records As List(Of Record) = GetRecords(i, batchSize)\n    WriteToDatabase(records)\nNext\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%b5%81%e5%bc%8f%e5%af%ab%e5%85%a5-TkvYGPuqfz\">2. \u4f7f\u7528\u6d41\u5f0f\u5beb\u5165<\/h3>\n<p>\u6d41\u5f0f\u5beb\u5165\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u8655\u7406\u65b9\u5f0f\uff0c\u53ef\u4ee5\u5728\u5beb\u5165\u6578\u64da\u6642\u6e1b\u5c11\u5167\u5b58\u7684\u4f7f\u7528\u3002\u901a\u904e\u4f7f\u7528\u6d41\u5c0d\u8c61\uff0c\u53ef\u4ee5\u9010\u884c\u6216\u9010\u584a\u5730\u5beb\u5165\u6578\u64da\uff0c\u5f9e\u800c\u964d\u4f4e\u5167\u5b58\u6d88\u8017\u3002<\/p>\n<pre><code>\nUsing writer As New StreamWriter(\"database.txt\", True)\n    For Each record As Record In records\n        writer.WriteLine(record.ToString())\n    Next\nEnd Using\n<\/code><\/pre>\n<h3 id=\"3-%e5%84%aa%e5%8c%96%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b-TkvYGPuqfz\">3. \u512a\u5316\u6578\u64da\u7d50\u69cb<\/h3>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u7d50\u69cb\u6642\uff0c\u61c9\u8003\u616e\u4f7f\u7528\u66f4\u9ad8\u6548\u7684\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u6574\u6578\u800c\u4e0d\u662f\u5b57\u7b26\u4e32\u4f86\u5b58\u5132\u6578\u5b57\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u5167\u5b58\u7684\u4f7f\u7528\u3002\u6b64\u5916\uff0c\u907f\u514d\u4f7f\u7528\u904e\u591a\u7684\u5168\u5c40\u8b8a\u91cf\uff0c\u56e0\u70ba\u9019\u4e9b\u8b8a\u91cf\u6703\u4e00\u76f4\u4f54\u7528\u5167\u5b58\u3002<\/p>\n<h3 id=\"4-%e9%87%8b%e6%94%be%e4%b8%8d%e5%bf%85%e8%a6%81%e7%9a%84%e8%b3%87%e6%ba%90-TkvYGPuqfz\">4. \u91cb\u653e\u4e0d\u5fc5\u8981\u7684\u8cc7\u6e90<\/h3>\n<p>\u5728 VB \u7a0b\u5e8f\u4e2d\uff0c\u78ba\u4fdd\u5728\u4e0d\u518d\u9700\u8981\u67d0\u4e9b\u5c0d\u8c61\u6642\u53ca\u6642\u91cb\u653e\u5b83\u5011\u3002\u4f7f\u7528 <code>Dispose<\/code> \u65b9\u6cd5\u6216\u5c07\u5c0d\u8c61\u8a2d\u7f6e\u70ba <code>Nothing<\/code>\uff0c\u4ee5\u4fbf\u5783\u573e\u56de\u6536\u5668\u80fd\u5920\u56de\u6536\u9019\u4e9b\u8cc7\u6e90\u3002<\/p>\n<pre><code>\nDim dbConnection As New SqlConnection(connectionString)\nTry\n    dbConnection.Open()\n    ' \u5beb\u5165\u6578\u64da\u7684\u4ee3\u78bc\nFinally\n    dbConnection.Dispose()\nEnd Try\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-TkvYGPuqfz\">\u7e3d\u7d50<\/h2>\n<p>\u5728 VB \u7a0b\u5e8f\u4e2d\u5beb\u5165\u6578\u64da\u5eab\u6587\u4ef6\u6642\uff0c\u5167\u5b58\u4e0d\u8db3\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u901a\u904e\u5206\u6279\u5beb\u5165\u6578\u64da\u3001\u4f7f\u7528\u6d41\u5f0f\u5beb\u5165\u3001\u512a\u5316\u6578\u64da\u7d50\u69cb\u4ee5\u53ca\u91cb\u653e\u4e0d\u5fc5\u8981\u7684\u8cc7\u6e90\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\uff0c\u9084\u80fd\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7aVB\u7a0b\u5e8f\u5beb\u5165\u6578\u64da\u5eab\u6642\u51fa\u73fe\u7684\u5167\u5b58\u4e0d\u8db3\u554f\u984c\uff0c\u63d0\u4f9b\u6709\u6548\u7684\u65b9\u6cd5\u548c\u6280\u5de7\uff0c\u78ba\u4fdd\u6578\u64da\u9806\u5229\u5beb\u5165\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-144701","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144701","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=144701"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144701\/revisions"}],"predecessor-version":[{"id":144702,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/144701\/revisions\/144702"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=144701"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=144701"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=144701"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}