{"id":152845,"date":"2024-11-02T02:30:22","date_gmt":"2024-11-01T18:30:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152845\/"},"modified":"2024-11-02T02:30:23","modified_gmt":"2024-11-01T18:30:23","slug":"%e7%a8%8b%e5%9f%ba%e7%a4%8e%e6%95%99%e7%a8%8b-vb-net-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152845\/","title":{"rendered":"\u7a0b\u57fa\u790e\u6559\u7a0b (VB.NET \u6578\u64da\u5eab\u7de8)"},"content":{"rendered":"<h1 id=\"%e7%a8%8b%e5%9f%ba%e7%a4%8e%e6%95%99%e7%a8%8b-vb-net-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8-BWnvzyYhAj\">\u7a0b\u57fa\u790e\u6559\u7a0b (VB.NET \u6578\u64da\u5eab\u7de8)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002VB.NET \u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u4ecb\u7d39 VB.NET \u4e2d\u7684\u6578\u64da\u5eab\u7de8\u7a0b\u57fa\u790e\uff0c\u5e6b\u52a9\u521d\u5b78\u8005\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-vb-net%ef%bc%9f-BWnvzyYhAj\">\u4ec0\u9ebc\u662f VB.NET\uff1f<\/h2>\n<p>VB.NET \u662f\u5fae\u8edf\u958b\u767c\u7684\u4e00\u7a2e\u7de8\u7a0b\u8a9e\u8a00\uff0c\u57fa\u65bc .NET \u5e73\u53f0\u3002\u5b83\u662f\u4e00\u7a2e\u9762\u5411\u5c0d\u8c61\u7684\u8a9e\u8a00\uff0c\u5177\u6709\u7c21\u55ae\u6613\u5b78\u7684\u7279\u9ede\uff0c\u9069\u5408\u521d\u5b78\u8005\u548c\u5c08\u696d\u958b\u767c\u8005\u4f7f\u7528\u3002VB.NET \u652f\u6301\u591a\u7a2e\u61c9\u7528\u7a0b\u5e8f\u7684\u958b\u767c\uff0c\u5305\u62ec\u684c\u9762\u61c9\u7528\u3001Web \u61c9\u7528\u548c\u79fb\u52d5\u61c9\u7528\u7b49\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-BWnvzyYhAj\">\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u548c\u7ba1\u7406\u4fe1\u606f\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5305\u62ec Microsoft SQL Server\u3001MySQL \u548c Oracle \u7b49\u3002\u5728 VB.NET \u4e2d\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528 ADO.NET \u4f86\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002<\/p>\n<h2 id=\"ado-net-%e7%b0%a1%e4%bb%8b-BWnvzyYhAj\">ADO.NET \u7c21\u4ecb<\/h2>\n<p>ADO.NET \u662f .NET \u6846\u67b6\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u63d0\u4f9b\u4e86\u4e00\u7d44\u7528\u65bc\u6578\u64da\u8a2a\u554f\u7684\u985e\u3002\u5b83\u652f\u6301\u9023\u63a5\u5230\u5404\u7a2e\u6578\u64da\u6e90\uff0c\u4e26\u80fd\u5920\u57f7\u884c\u67e5\u8a62\u548c\u66f4\u65b0\u64cd\u4f5c\u3002ADO.NET \u7684\u6838\u5fc3\u7d44\u4ef6\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>Connection<\/strong>\uff1a\u7528\u65bc\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002<\/li>\n<li><strong>Command<\/strong>\uff1a\u7528\u65bc\u57f7\u884c SQL \u8a9e\u53e5\u3002<\/li>\n<li><strong>DataReader<\/strong>\uff1a\u7528\u65bc\u4ee5\u53ea\u8b80\u65b9\u5f0f\u8b80\u53d6\u6578\u64da\u3002<\/li>\n<li><strong>DataAdapter<\/strong>\uff1a\u7528\u65bc\u586b\u5145 DataSet \u548c\u66f4\u65b0\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>DataSet<\/strong>\uff1a\u7528\u65bc\u5728\u5167\u5b58\u4e2d\u5b58\u5132\u6578\u64da\u7684\u96c6\u5408\u3002<\/li>\n<\/ul>\n<h2 id=\"vb-net-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b7%a8%e7%a8%8b%e7%a4%ba%e4%be%8b-BWnvzyYhAj\">VB.NET \u6578\u64da\u5eab\u7de8\u7a0b\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 VB.NET \u6578\u64da\u5eab\u7de8\u7a0b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u9023\u63a5\u5230 SQL Server \u6578\u64da\u5eab\u4e26\u57f7\u884c\u67e5\u8a62\uff1a<\/p>\n<pre><code>\nImports System.Data.SqlClient\n\nModule Module1\n    Sub Main()\n        ' \u5b9a\u7fa9\u9023\u63a5\u5b57\u7b26\u4e32\n        Dim connectionString As String = \"Server=your_server;Database=your_database;User Id=your_username;Password=your_password;\"\n        \n        ' \u5275\u5efa\u9023\u63a5\n        Using connection As New SqlConnection(connectionString)\n            connection.Open()\n            Console.WriteLine(\"\u9023\u63a5\u6210\u529f\uff01\")\n\n            ' \u5275\u5efa SQL \u547d\u4ee4\n            Dim command As New SqlCommand(\"SELECT * FROM your_table\", connection)\n\n            ' \u57f7\u884c\u547d\u4ee4\u4e26\u8b80\u53d6\u6578\u64da\n            Using reader As SqlDataReader = command.ExecuteReader()\n                While reader.Read()\n                    Console.WriteLine(reader(\"your_column_name\").ToString())\n                End While\n            End Using\n        End Using\n    End Sub\nEnd Module\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5b9a\u7fa9\u4e86\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u7136\u5f8c\u4f7f\u7528 SqlConnection \u985e\u4f86\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u63a5\u8457\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b SqlCommand \u4f86\u57f7\u884c SQL \u67e5\u8a62\uff0c\u4e26\u4f7f\u7528 SqlDataReader \u4f86\u8b80\u53d6\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e8%99%95%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%e7%95%b0%e5%b8%b8-BWnvzyYhAj\">\u8655\u7406\u6578\u64da\u5eab\u7570\u5e38<\/h2>\n<p>\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u7570\u5e38\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u53ef\u4ee5\u4f7f\u7528 Try&#8230;Catch \u8a9e\u53e5\u4f86\u6355\u7372\u548c\u8655\u7406\u7570\u5e38\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>\nTry\n    ' \u6578\u64da\u5eab\u64cd\u4f5c\u4ee3\u78bc\nCatch ex As SqlException\n    Console.WriteLine(\"\u6578\u64da\u5eab\u932f\u8aa4\uff1a\" &amp; ex.Message)\nCatch ex As Exception\n    Console.WriteLine(\"\u5176\u4ed6\u932f\u8aa4\uff1a\" &amp; ex.Message)\nEnd Try\n<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u767c\u751f\u932f\u8aa4\u6642\uff0c\u7a0b\u5e8f\u4e0d\u6703\u5d29\u6f70\uff0c\u4e26\u80fd\u5920\u63d0\u4f9b\u6709\u7528\u7684\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BWnvzyYhAj\">\u7e3d\u7d50<\/h2>\n<p>\u672c\u6587\u4ecb\u7d39\u4e86 VB.NET \u4e2d\u7684\u6578\u64da\u5eab\u7de8\u7a0b\u57fa\u790e\uff0c\u5305\u62ec ADO.NET \u7684\u7d44\u4ef6\u3001\u57fa\u672c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u793a\u4f8b\u4ee5\u53ca\u7570\u5e38\u8655\u7406\u65b9\u6cd5\u3002\u638c\u63e1\u9019\u4e9b\u57fa\u790e\u77e5\u8b58\u5f8c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u9032\u884c\u6578\u64da\u5eab\u61c9\u7528\u7684\u958b\u767c\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u8acb\u8003\u616e\u4f7f\u7528\u9999\u6e2f\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u670d\u52d9\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u9078\u64c7\u5408\u9069\u7684\u4f3a\u670d\u5668\u90fd\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2VB.NET\u6578\u64da\u5eab\u7de8\u7a0b\u7684\u57fa\u790e\u77e5\u8b58\uff0c\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u6280\u5de7\uff0c\u8f15\u9b06\u958b\u767c\u9ad8\u6548\u61c9\u7528\u7a0b\u5f0f\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-152845","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152845","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=152845"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152845\/revisions"}],"predecessor-version":[{"id":152846,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152845\/revisions\/152846"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}