{"id":171809,"date":"2024-11-07T07:50:17","date_gmt":"2024-11-06T23:50:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/171809\/"},"modified":"2024-11-07T07:50:18","modified_gmt":"2024-11-06T23:50:18","slug":"vb-%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e9%a1%af%e7%a4%ba%ef%bc%9f-vb-%e9%a1%af%e7%a4%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/171809\/","title":{"rendered":"VB \u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u8868\u7684\u986f\u793a\uff1f (vb \u986f\u793a\u6578\u64da\u5eab\u8868)"},"content":{"rendered":"<h1 id=\"vb-%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e9%a1%af%e7%a4%ba%ef%bc%9f-uWFjdFMBbD\">VB \u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u8868\u7684\u986f\u793a\uff1f<\/h1>\n<p>\u5728\u73fe\u4eca\u7684\u61c9\u7528\u7a0b\u5f0f\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002Visual Basic\uff08VB\uff09\u4f5c\u70ba\u4e00\u7a2e\u7c21\u55ae\u6613\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u684c\u9762\u61c9\u7528\u7a0b\u5f0f\u7684\u958b\u767c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728VB\u4e2d\u5be6\u73fe\u6578\u64da\u5eab\u8868\u7684\u986f\u793a\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-uWFjdFMBbD\">\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728\u986f\u793a\u6578\u64da\u5eab\u8868\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002VB\u652f\u6301\u591a\u7a2e\u6578\u64da\u5eab\u9023\u63a5\u65b9\u5f0f\uff0c\u6700\u5e38\u7528\u7684\u662f\u4f7f\u7528ADO.NET\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u5230SQL Server\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<pre><code>Dim connectionString As String\nconnectionString = \"Data Source=\u4f60\u7684\u6578\u64da\u6e90;Initial Catalog=\u4f60\u7684\u6578\u64da\u5eab;User ID=\u4f60\u7684\u7528\u6236\u540d;Password=\u4f60\u7684\u5bc6\u78bc\"\n\nDim connection As New SqlConnection(connectionString)\nconnection.Open()<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u4e26\u4f7f\u7528SqlConnection\u985e\u4f86\u5efa\u7acb\u9023\u63a5\u3002\u78ba\u4fdd\u5c07\u201c\u4f60\u7684\u6578\u64da\u6e90\u201d\u3001\u201c\u4f60\u7684\u6578\u64da\u5eab\u201d\u3001\u201c\u4f60\u7684\u7528\u6236\u540d\u201d\u548c\u201c\u4f60\u7684\u5bc6\u78bc\u201d\u66ff\u63db\u70ba\u5be6\u969b\u7684\u6578\u64da\u5eab\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-uWFjdFMBbD\">\u67e5\u8a62\u6578\u64da<\/h2>\n<p>\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u7372\u53d6\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>Dim command As New SqlCommand(\"SELECT * FROM \u4f60\u7684\u8868\u540d\", connection)\nDim reader As SqlDataReader = command.ExecuteReader()<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u5f9e\u6307\u5b9a\u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u8a18\u9304\u3002SqlDataReader\u985e\u7528\u65bc\u9010\u884c\u8b80\u53d6\u67e5\u8a62\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e9%a1%af%e7%a4%ba%e6%95%b8%e6%93%9a-uWFjdFMBbD\">\u986f\u793a\u6578\u64da<\/h2>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5c07\u67e5\u8a62\u7d50\u679c\u986f\u793a\u5728\u61c9\u7528\u7a0b\u5f0f\u7684\u754c\u9762\u4e0a\u3002\u53ef\u4ee5\u4f7f\u7528DataGridView\u63a7\u4ef6\u4f86\u986f\u793a\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5c07\u6578\u64da\u586b\u5145\u5230DataGridView\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>Dim dataTable As New DataTable()\ndataTable.Load(reader)\nDataGridView1.DataSource = dataTable<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500bDataTable\u5c0d\u8c61\uff0c\u4e26\u4f7f\u7528Load\u65b9\u6cd5\u5c07SqlDataReader\u4e2d\u7684\u6578\u64da\u52a0\u8f09\u5230DataTable\u4e2d\u3002\u7136\u5f8c\uff0c\u6211\u5011\u5c07DataTable\u8a2d\u7f6e\u70baDataGridView\u7684\u6578\u64da\u6e90\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u5728\u754c\u9762\u4e0a\u986f\u793a\u6578\u64da\u4e86\u3002<\/p>\n<h2 id=\"%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-uWFjdFMBbD\">\u95dc\u9589\u9023\u63a5<\/h2>\n<p>\u5b8c\u6210\u6578\u64da\u986f\u793a\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>reader.Close()\nconnection.Close()<\/code><\/pre>\n<h2 id=\"%e5%ae%8c%e6%95%b4%e7%a4%ba%e4%be%8b-uWFjdFMBbD\">\u5b8c\u6574\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684VB\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u9023\u63a5\u5230\u6578\u64da\u5eab\u3001\u67e5\u8a62\u6578\u64da\u4e26\u986f\u793a\u5728DataGridView\u4e2d\uff1a<\/p>\n<pre><code>Imports System.Data.SqlClient\n\nPublic Class Form1\n    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load\n        Dim connectionString As String = \"Data Source=\u4f60\u7684\u6578\u64da\u6e90;Initial Catalog=\u4f60\u7684\u6578\u64da\u5eab;User ID=\u4f60\u7684\u7528\u6236\u540d;Password=\u4f60\u7684\u5bc6\u78bc\"\n        Dim connection As New SqlConnection(connectionString)\n\n        Try\n            connection.Open()\n            Dim command As New SqlCommand(\"SELECT * FROM \u4f60\u7684\u8868\u540d\", connection)\n            Dim reader As SqlDataReader = command.ExecuteReader()\n\n            Dim dataTable As New DataTable()\n            dataTable.Load(reader)\n            DataGridView1.DataSource = dataTable\n\n        Catch ex As Exception\n            MessageBox.Show(\"\u932f\u8aa4: \" &amp; ex.Message)\n        Finally\n            connection.Close()\n        End Try\n    End Sub\nEnd Class<\/code><\/pre>\n<h2 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href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> 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