| <!----> 下面是利用SQL语句创建数据库、表、存储过程、视图、索引、规则、修改表、查看数据等的方法。所要增加的控件如下： 
<xmp>Imports System.Data Imports System.Data.SqlClient Public Class Form1 Inherits System.Windows.Forms.Form Private ConnectionString As String = "Data Source=.;Initial Catalog=;User Id=sa;Password=;" Private reader As SqlDataReader = Nothing Private conn As SqlConnection = Nothing Private cmd As SqlCommand = Nothing Private AlterTableBtn As System.Windows.Forms.Button Private sql As String = Nothing Private CreateOthersBtn As System.Windows.Forms.Button #Region " Windows 窗体设计器生成的代码 " '窗体重写处置以清理组件列表。 Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub Public Sub New() MyBase.New() InitializeComponent() End Sub Private components As System.ComponentModel.IContainer Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid Friend WithEvents CreateDBBtn As System.Windows.Forms.Button Friend WithEvents CreateTableBtn As System.Windows.Forms.Button Friend WithEvents CreateSPBtn As System.Windows.Forms.Button Friend WithEvents CreateViewBtn As System.Windows.Forms.Button Friend WithEvents btnAlterTable As System.Windows.Forms.Button Friend WithEvents btnCreateOthers As System.Windows.Forms.Button Friend WithEvents btnDropTable As System.Windows.Forms.Button Friend WithEvents btnViewData As System.Windows.Forms.Button Friend WithEvents btnViewSP As System.Windows.Forms.Button Friend WithEvents btnViewView As System.Windows.Forms.Button <system.diagnostics.debuggerstepthrough()> Private Sub InitializeComponent() Me.CreateDBBtn = New System.Windows.Forms.Button() Me.CreateTableBtn = New System.Windows.Forms.Button() Me.CreateSPBtn = New System.Windows.Forms.Button() Me.CreateViewBtn = New System.Windows.Forms.Button() Me.btnAlterTable = New System.Windows.Forms.Button() Me.btnCreateOthers = New System.Windows.Forms.Button() Me.btnDropTable = New System.Windows.Forms.Button() Me.btnViewData = New System.Windows.Forms.Button() Me.btnViewSP = New System.Windows.Forms.Button() Me.btnViewView = New System.Windows.Forms.Button() Me.DataGrid1 = New System.Windows.Forms.DataGrid() CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit() Me.SuspendLayout() ' 'CreateDBBtn ' Me.CreateDBBtn.Location = New System.Drawing.Point(19, 9) Me.CreateDBBtn.Name = "CreateDBBtn" Me.CreateDBBtn.Size = New System.Drawing.Size(104, 23) Me.CreateDBBtn.TabIndex = 0 Me.CreateDBBtn.Text = "创建数据库" ' 'CreateTableBtn ' Me.CreateTableBtn.Location = New System.Drawing.Point(139, 9) Me.CreateTableBtn.Name = "CreateTableBtn" Me.CreateTableBtn.TabIndex = 1 Me.CreateTableBtn.Text = "创建表" ' 'CreateSPBtn ' Me.CreateSPBtn.Location = New System.Drawing.Point(230, 9) Me.CreateSPBtn.Name = "CreateSPBtn" Me.CreateSPBtn.Size = New System.Drawing.Size(104, 23) Me.CreateSPBtn.TabIndex = 2 Me.CreateSPBtn.Text = "创建存储过程" ' 'CreateViewBtn ' Me.CreateViewBtn.Location = New System.Drawing.Point(350, 9) Me.CreateViewBtn.Name = "CreateViewBtn" Me.CreateViewBtn.TabIndex = 3 Me.CreateViewBtn.Text = "创建视图" ' 'btnAlterTable ' Me.btnAlterTable.Location = New System.Drawing.Point(441, 9) Me.btnAlterTable.Name = "btnAlterTable" Me.btnAlterTable.TabIndex = 4 Me.btnAlterTable.Text = "修改表" ' 'btnCreateOthers ' Me.btnCreateOthers.Location = New System.Drawing.Point(17, 43) Me.btnCreateOthers.Name = "btnCreateOthers" Me.btnCreateOthers.Size = New System.Drawing.Size(104, 23) Me.btnCreateOthers.TabIndex = 5 Me.btnCreateOthers.Text = "创建规则和索引" ' 'btnDropTable ' Me.btnDropTable.Location = New System.Drawing.Point(138, 43) Me.btnDropTable.Name = "btnDropTable" Me.btnDropTable.TabIndex = 6 Me.btnDropTable.Text = "删除表" ' 'btnViewData ' Me.btnViewData.Location = New System.Drawing.Point(351, 43) Me.btnViewData.Name = "btnViewData" Me.btnViewData.TabIndex = 7 Me.btnViewData.Text = "查看数据" ' 'btnViewSP ' Me.btnViewSP.Location = New System.Drawing.Point(230, 43) Me.btnViewSP.Name = "btnViewSP" Me.btnViewSP.Size = New System.Drawing.Size(104, 23) Me.btnViewSP.TabIndex = 8 Me.btnViewSP.Text = "查看存储过程" ' 'btnViewView ' Me.btnViewView.Location = New System.Drawing.Point(443, 43) Me.btnViewView.Name = "btnViewView" Me.btnViewView.TabIndex = 9 Me.btnViewView.Text = "查看视图" ' 'DataGrid1 ' Me.DataGrid1.DataMember = "" Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText Me.DataGrid1.Location = New System.Drawing.Point(20, 76) Me.DataGrid1.Name = "DataGrid1" Me.DataGrid1.Size = New System.Drawing.Size(500, 183) Me.DataGrid1.TabIndex = 10 ' 'Form1 ' Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(538, 281) Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.DataGrid1, Me.btnViewView, _ Me.btnViewSP, Me.btnViewData, Me.btnDropTable, Me.btnCreateOthers, Me.btnAlterTable, _ Me.CreateViewBtn, Me.CreateSPBtn, Me.CreateTableBtn, Me.CreateDBBtn}) Me.Name = "Form1" Me.Text = "动态创建SQL Server数据库、表、存储过程等架构信息" CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit() Me.ResumeLayout(False) End Sub #End Region ' 创建数据库 Private Sub CreateDBBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles CreateDBBtn.Click conn = New SqlConnection(ConnectionString) ' 打开连接 If conn.State <> ConnectionState.Open Then conn.Open() End If 'MyDataBase为数据库名称 Dim sql As String = "CREATE DATABASE MyDataBase ON PRIMARY (Name=MyDataBase_data, filename = " + _ "'D:\MyDataBase.mdf', size=3," + "maxsize=5, filegrowth=10%) log on" + "(name=MyDataBase_log, " + _ "filename='D:\MyDataBase.ldf',size=3," + "maxsize=20,filegrowth=1)" cmd = New SqlCommand(sql, conn) Try cmd.ExecuteNonQuery() Catch ae As SqlException MessageBox.Show(ae.Message.ToString()) End Try End Sub '创建表 Private Sub CreateTableBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles CreateTableBtn.Click conn = New SqlConnection(ConnectionString) ' 打开连接 If conn.State = ConnectionState.Open Then conn.Close() End If ConnectionString = "Data Source=.;Initial Catalog=MyDataBase;User Id=sa;Password=;" conn.ConnectionString = ConnectionString conn.Open() sql = "CREATE TABLE myTable" + "(myId INTEGER CONSTRAINT PKeyMyId PRIMARY KEY," + _ "myName CHAR(50) NOT Null, myAddress CHAR(255), myValues FLOAT)" cmd = New SqlCommand(sql, conn) Try cmd.ExecuteNonQuery() ' 添加纪录 sql = "INSERT INTO myTable(myId, myName, myAddress, myValues) " + _ "VALUES (1001, _'【孟宪会之精彩世界】之一', 'http://xml.sz.luohuedu.net/', 100 ) " cmd = New SqlCommand(sql, conn) cmd.ExecuteNonQuery() sql = "INSERT INTO myTable(myId, myName, myAddress, myValues) " + _ "VALUES (1002, '【孟宪会之精彩世界】之二', 'http://www.erp800.com/net_lover/', 99) " cmd = New SqlCommand(sql, conn) cmd.ExecuteNonQuery() sql = "INSERT INTO myTable(myId, myName, myAddress, myValues) " + _ "VALUES (1003, '【孟宪会之精彩世界】之三', 'http://xml.sz.luohuedu.net/', 99) " cmd = New SqlCommand(sql, conn) cmd.ExecuteNonQuery() sql = "INSERT INTO myTable(myId, myName, myAddress, myValues) " + _ "VALUES (1004, '【孟宪会之精彩世界】之四', 'http://www.erp800.com/net_lover/', 100) " cmd = New SqlCommand(sql, conn) cmd.ExecuteNonQuery() Catch ae As SqlException MessageBox.Show(ae.Message.ToString()) End Try End Sub '创建存储过程 Private Sub CreateSPBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles CreateSPBtn.Click sql = "CREATE PROCEDURE myProc AS" + " SELECT myName, myAddress FROM myTable GO" ExecuteSQLStmt(sql) End Sub '创建视图 Private Sub CreateViewBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles CreateViewBtn.Click sql = "CREATE VIEW myView AS SELECT myName FROM myTable" ExecuteSQLStmt(sql) End Sub '修改表 Private Sub btnAlterTable_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnAlterTable.Click sql = "ALTER TABLE MyTable ADD newCol datetime NOT NULL DEFAULT (getdate())" ExecuteSQLStmt(sql) End Sub '创建规则和索引 Private Sub btnCreateOthers_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnCreateOthers.Click sql = "CREATE UNIQUE INDEX " + "myIdx ON myTable(myName)" ExecuteSQLStmt(sql) sql = "CREATE RULE myRule " + "AS @myValues >= 90 AND @myValues < 9999" ExecuteSQLStmt(sql) End Sub '删除表 Private Sub btnDropTable_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnDropTable.Click Dim sql As String = "DROP TABLE MyTable" ExecuteSQLStmt(sql) End Sub '浏览表数据 Private Sub btnViewData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnViewData.Click conn = New SqlConnection(ConnectionString) If conn.State = ConnectionState.Open Then conn.Close() End If ConnectionString = "Data Source=.;Initial Catalog=MyDataBase;User Id=sa;Password=;" conn.ConnectionString = ConnectionString conn.Open() Dim da As New SqlDataAdapter("SELECT * FROM myTable", conn) Dim ds As New DataSet("myTable") da.Fill(ds, "myTable") DataGrid1.DataSource = ds.Tables("myTable").DefaultView End Sub '浏览存储过程 Private Sub btnViewSP_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnViewSP.Click conn = New SqlConnection(ConnectionString) If conn.State = ConnectionState.Open Then conn.Close() End If ConnectionString = "Data Source=.;Initial Catalog=MyDataBase;User Id=sa;Password=;" conn.ConnectionString = ConnectionString conn.Open() Dim da As New SqlDataAdapter("myProc", conn) Dim ds As New DataSet("SP") da.Fill(ds, "SP") DataGrid1.DataSource = ds.DefaultViewManager End Sub '浏览视图 Private Sub btnViewView_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _ Handles btnViewView.Click conn = New SqlConnection(ConnectionString) If conn.State = ConnectionState.Open Then conn.Close() End If ConnectionString = "Data Source=.;Initial Catalog=MyDataBase;User Id=sa;Password=;" conn.ConnectionString = ConnectionString conn.Open() Dim da As New SqlDataAdapter("SELECT * FROM myView", conn) Dim ds As New DataSet() da.Fill(ds) DataGrid1.DataSource = ds.DefaultViewManager End Sub Private Sub ExecuteSQLStmt(ByVal sql As String) conn = New SqlConnection(ConnectionString) ' 打开连接 If conn.State = ConnectionState.Open Then conn.Close() End If ConnectionString = "Data Source=.;Initial Catalog=MyDataBase;User Id=sa;Password=;" conn.ConnectionString = ConnectionString conn.Open() cmd = New SqlCommand(sql, conn) Try cmd.ExecuteNonQuery() Catch ae As SqlException MessageBox.Show(ae.Message.ToString()) End Try End Sub End Class </xmp> |
