{"id":170999,"date":"2024-11-06T23:05:20","date_gmt":"2024-11-06T15:05:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/170999\/"},"modified":"2024-11-06T23:05:21","modified_gmt":"2024-11-06T15:05:21","slug":"vb-net-%e9%81%a0%e7%a8%8b%e9%80%a3%e6%8e%a5-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%af%a6%e7%8f%be%e6%96%b9%e6%b3%95-vb-net-%e9%81%a0%e7%a8%8b%e9%80%a3%e6%8e%a5-sql-%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/170999\/","title":{"rendered":"VB.NET \u9060\u7a0b\u9023\u63a5 SQL \u6578\u64da\u5eab\u5be6\u73fe\u65b9\u6cd5 (vb.net \u9060\u7a0b\u9023\u63a5 sql \u6578\u64da\u5eab)"},"content":{"rendered":"

VB.NET \u9060\u7a0b\u9023\u63a5 SQL \u6578\u64da\u5eab\u5be6\u73fe\u65b9\u6cd5<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002VB.NET \u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u9023\u63a5\u548c\u64cd\u4f5c SQL \u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 VB.NET \u9060\u7a0b\u9023\u63a5 SQL \u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

1. \u4e86\u89e3 SQL \u6578\u64da\u5eab\u7684\u9023\u63a5\u5b57\u7b26\u4e32<\/h2>\n

\u5728 VB.NET \u4e2d\uff0c\u9023\u63a5 SQL \u6578\u64da\u5eab\u7684\u7b2c\u4e00\u6b65\u662f\u69cb\u5efa\u6b63\u78ba\u7684\u9023\u63a5\u5b57\u7b26\u4e32\u3002\u9023\u63a5\u5b57\u7b26\u4e32\u5305\u542b\u4e86\u6578\u64da\u5eab\u7684\u4f4d\u5740\u3001\u7528\u6236\u540d\u3001\u5bc6\u78bc\u7b49\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5178\u578b\u7684 SQL Server \u9023\u63a5\u5b57\u7b26\u4e32\u7bc4\u4f8b\uff1a<\/p>\n

Dim connectionString As String = \"Server=your_server_address;Database=your_database_name;User Id=your_username;Password=your_password;\"<\/code><\/pre>\n
\u5728\u9019\u88e1\uff0cyour_server_address<\/code> \u662f SQL Server \u7684 IP \u5730\u5740\u6216\u4e3b\u6a5f\u540d\uff0cyour_database_name<\/code> \u662f\u8981\u9023\u63a5\u7684\u6578\u64da\u5eab\u540d\u7a31\uff0cyour_username<\/code> \u548c your_password<\/code> \u662f\u7528\u65bc\u8eab\u4efd\u9a57\u8b49\u7684\u6191\u64da\u3002<\/p>\n
2. \u4f7f\u7528 SqlConnection \u9032\u884c\u9023\u63a5<\/h2>\n
\u4e00\u65e6\u4f60\u64c1\u6709\u4e86\u6b63\u78ba\u7684\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528 SqlConnection<\/code> \u985e\u4f86\u5efa\u7acb\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n
Imports System.Data.SqlClient\n\nModule Module1\n    Sub Main()\n        Dim connectionString As String = \"Server=your_server_address;Database=your_database_name;User Id=your_username;Password=your_password;\"\n        Using connection As New SqlConnection(connectionString)\n            Try\n                connection.Open()\n                Console.WriteLine(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\")\n            Catch ex As Exception\n                Console.WriteLine(\"\u9023\u63a5\u5931\u6557: \" & ex.Message)\n            End Try\n        End Using\n    End Sub\nEnd Module<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 Using<\/code> \u8a9e\u53e5\u4f86\u78ba\u4fdd\u5728\u4f7f\u7528\u5b8c SqlConnection<\/code> \u4e4b\u5f8c\u81ea\u52d5\u95dc\u9589\u9023\u63a5\u3002\u9019\u6a23\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6e90\uff0c\u907f\u514d\u5167\u5b58\u6d29\u6f0f\u3002<\/p>\n
3. \u57f7\u884c SQL \u67e5\u8a62<\/h2>\n
\u9023\u63a5\u5230\u6578\u64da\u5eab\u5f8c\uff0c\u4f60\u53ef\u4ee5\u57f7\u884c SQL \u67e5\u8a62\u4f86\u7372\u53d6\u6216\u4fee\u6539\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u57f7\u884c\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n
Dim query As String = \"SELECT * FROM your_table_name\"\nUsing command As New SqlCommand(query, connection)\n    Using reader As SqlDataReader = command.ExecuteReader()\n        While reader.Read()\n            Console.WriteLine(reader(\"column_name\").ToString())\n        End While\n    End Using\nEnd Using<\/code><\/pre>\n
\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 SqlCommand<\/code> \u4f86\u57f7\u884c\u67e5\u8a62\uff0c\u4e26\u4f7f\u7528 SqlDataReader<\/code> \u4f86\u8b80\u53d6\u7d50\u679c\u3002\u8acb\u6839\u64da\u4f60\u7684\u6578\u64da\u8868\u548c\u5217\u540d\u9032\u884c\u76f8\u61c9\u7684\u4fee\u6539\u3002<\/p>\n
4. \u8655\u7406\u7570\u5e38<\/h2>\n
\u5728\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u6642\uff0c\u7570\u5e38\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4f60\u61c9\u8a72\u4f7f\u7528 Try...Catch<\/code> \u8a9e\u53e5\u4f86\u6355\u7372\u53ef\u80fd\u767c\u751f\u7684\u7570\u5e38\uff0c\u4e26\u9032\u884c\u76f8\u61c9\u7684\u8655\u7406\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u7a69\u5b9a\u6027\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
5. \u7e3d\u7d50<\/h2>\n
\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528 VB.NET \u9060\u7a0b\u9023\u63a5 SQL \u6578\u64da\u5eab\u7684\u57fa\u672c\u65b9\u6cd5\uff0c\u5305\u62ec\u69cb\u5efa\u9023\u63a5\u5b57\u7b26\u4e32\u3001\u4f7f\u7528 SqlConnection<\/code> \u9032\u884c\u9023\u63a5\u3001\u57f7\u884c SQL \u67e5\u8a62\u4ee5\u53ca\u8655\u7406\u7570\u5e38\u3002\u9019\u4e9b\u77e5\u8b58\u5c0d\u65bc\u958b\u767c\u6578\u64da\u9a45\u52d5\u7684\u61c9\u7528\u7a0b\u5e8f\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u6258\u7ba1\u4f60\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u4f01\u696d\u61c9\u7528\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 VB.NET \u9060\u7a0b\u9023\u63a5 SQL \u6578\u64da\u5eab\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u8f15\u9b06\u8a2d\u7f6e\u548c\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\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-170999","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170999","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=170999"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170999\/revisions"}],"predecessor-version":[{"id":171000,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/170999\/revisions\/171000"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=170999"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=170999"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=170999"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}