frmselectbook.vb

visual Basic 数据库开发实例导航

Public Class frmSelectBook
    Inherits 图书管理系统.frmBase
    Private gridMouseDownTime As DateTime = New DateTime
#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 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

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents SqlDataAdapter1 As System.Data.SqlClient.SqlDataAdapter
    Friend WithEvents SqlUpdateCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlConnection1 As System.Data.SqlClient.SqlConnection
    Friend WithEvents DataSet11 As 图书管理系统.DataSet1
    Friend WithEvents SqlSelectCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents SqlInsertCommand1 As System.Data.SqlClient.SqlCommand
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.SqlDataAdapter1 = New System.Data.SqlClient.SqlDataAdapter
        Me.SqlInsertCommand1 = New System.Data.SqlClient.SqlCommand
        Me.SqlConnection1 = New System.Data.SqlClient.SqlConnection
        Me.SqlSelectCommand1 = New System.Data.SqlClient.SqlCommand
        Me.DataSet11 = New 图书管理系统.DataSet1
        CType(Me.DataSet11, System.ComponentModel.ISupportInitialize).BeginInit()
        '
        'SqlDataAdapter1
        '
        Me.SqlDataAdapter1.InsertCommand = Me.SqlInsertCommand1
        Me.SqlDataAdapter1.SelectCommand = Me.SqlSelectCommand1
        Me.SqlDataAdapter1.TableMappings.AddRange(New System.Data.Common.DataTableMapping() {New System.Data.Common.DataTableMapping("Table", "图书信息", New System.Data.Common.DataColumnMapping() {New System.Data.Common.DataColumnMapping("条形码", "条形码"), New System.Data.Common.DataColumnMapping("编号", "编号"), New System.Data.Common.DataColumnMapping("书名", "书名"), New System.Data.Common.DataColumnMapping("类型", "类型"), New System.Data.Common.DataColumnMapping("作者", "作者"), New System.Data.Common.DataColumnMapping("译者", "译者"), New System.Data.Common.DataColumnMapping("ISBN", "ISBN"), New System.Data.Common.DataColumnMapping("出版社", "出版社"), New System.Data.Common.DataColumnMapping("价格", "价格"), New System.Data.Common.DataColumnMapping("页码", "页码"), New System.Data.Common.DataColumnMapping("书架名称", "书架名称"), New System.Data.Common.DataColumnMapping("现存量", "现存量"), New System.Data.Common.DataColumnMapping("库存总量", "库存总量"), New System.Data.Common.DataColumnMapping("入库时间", "入库时间"), New System.Data.Common.DataColumnMapping("操作员", "操作员"), New System.Data.Common.DataColumnMapping("简介", "简介"), New System.Data.Common.DataColumnMapping("借出次数", "借出次数"), New System.Data.Common.DataColumnMapping("是否注销", "是否注销")})})
        '
        'SqlInsertCommand1
        '
        Me.SqlInsertCommand1.CommandText = "INSERT INTO 图书信息(条形码, 编号, 书名, 类型, 作者, 译者, ISBN, 出版社, 价格, 页码, 书架名称, 现存量, 库存总量, 入库时" & _
        "间, 操作员, 简介, 借出次数, 是否注销) VALUES (@条形码, @编号, @书名, @类型, @作者, @译者, @ISBN, @出版社, @价格," & _
        " @页码, @书架名称, @现存量, @库存总量, @入库时间, @操作员, @简介, @借出次数, @是否注销); SELECT 条形码, 编号, 书名, 类" & _
        "型, 作者, 译者, ISBN, 出版社, 价格, 页码, 书架名称, 现存量, 库存总量, 入库时间, 操作员, 简介, 借出次数, 是否注销 FROM 图书" & _
        "信息 WHERE (编号 = @编号)"
        Me.SqlInsertCommand1.Connection = Me.SqlConnection1
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@条形码", System.Data.SqlDbType.VarChar, 40, "条形码"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@编号", System.Data.SqlDbType.VarChar, 50, "编号"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@书名", System.Data.SqlDbType.VarChar, 200, "书名"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@类型", System.Data.SqlDbType.VarChar, 100, "类型"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@作者", System.Data.SqlDbType.VarChar, 100, "作者"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@译者", System.Data.SqlDbType.VarChar, 100, "译者"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@ISBN", System.Data.SqlDbType.VarChar, 40, "ISBN"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@出版社", System.Data.SqlDbType.VarChar, 100, "出版社"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@价格", System.Data.SqlDbType.Money, 8, "价格"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@页码", System.Data.SqlDbType.Int, 4, "页码"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@书架名称", System.Data.SqlDbType.VarChar, 200, "书架名称"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@现存量", System.Data.SqlDbType.Int, 4, "现存量"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@库存总量", System.Data.SqlDbType.Int, 4, "库存总量"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@入库时间", System.Data.SqlDbType.DateTime, 4, "入库时间"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@操作员", System.Data.SqlDbType.VarChar, 20, "操作员"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@简介", System.Data.SqlDbType.VarChar, 100, "简介"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@借出次数", System.Data.SqlDbType.Int, 4, "借出次数"))
        Me.SqlInsertCommand1.Parameters.Add(New System.Data.SqlClient.SqlParameter("@是否注销", System.Data.SqlDbType.Bit, 1, "是否注销"))
        '
        'SqlConnection1
        '
        Me.SqlConnection1.ConnectionString = "workstation id=CS;packet size=4096;integrated security=SSPI;data source=CS;persis" & _
        "t security info=False;initial catalog=libbook"
        '
        'SqlSelectCommand1
        '
        Me.SqlSelectCommand1.CommandText = "SELECT 条形码, 编号, 书名, 类型, 作者, 译者, ISBN, 出版社, 价格, 页码, 书架名称, 现存量, 库存总量, 入库时间, 操作员, 简介" & _
        ", 借出次数, 是否注销 FROM 图书信息"
        Me.SqlSelectCommand1.Connection = Me.SqlConnection1
        '
        'DataSet11
        '
        Me.DataSet11.DataSetName = "DataSet1"
        Me.DataSet11.Locale = New System.Globalization.CultureInfo("zh-CN")
        '
        'frmSelectBook
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(608, 317)
        Me.Name = "frmSelectBook"
        CType(Me.DataSet11, System.ComponentModel.ISupportInitialize).EndInit()

    End Sub

#End Region
    Public Overrides Sub Prepare()
        Me.Text = "选择图书"
        Me.grbSearch.Visible = False
        Me.dgdList.Dock = DockStyle.Fill
        Me.ToolBar1.Visible = False
    End Sub
    Public Overrides Sub LoadData()
        '清空DataSet11
        DataSet11.Clear()
        SqlConnection1.ConnectionString = DataBase.sConn
        SqlDataAdapter1.Fill(DataSet11)
        dtData = DataSet11.Tables("图书信息")
        bmData = Me.BindingContext(DataSet11, "图书信息")
        If bmData.Count <> 0 Then
            bmData.Position = 0
        End If
    End Sub

    Public Overrides Sub SetDataGrid()
        LoadData()
        '定义一个DataGrid表样式
        Dim ts As New DataGridTableStyle
        Dim aColumnTextColumn As DataGridTextBoxColumn
        Dim numCols As Integer = dtData.Columns.Count
        Dim i As Integer
        For i = 0 To numCols - 3

            aColumnTextColumn = New DataGridTextBoxColumn
            aColumnTextColumn.MappingName = _
            dtData.Columns(i).ColumnName
            aColumnTextColumn.HeaderText = _
            dtData.Columns(i).ColumnName
            aColumnTextColumn.NullText = ""
            aColumnTextColumn.ReadOnly = True
            '为列样式对应的TextBox添加事件响应
            '为DataGrid单元格支持双击双击添加事件响应
            AddHandler aColumnTextColumn.TextBox.MouseDown, _
            New MouseEventHandler(AddressOf DGDoubleClick)
            AddHandler aColumnTextColumn.TextBox.DoubleClick, _
            New EventHandler(AddressOf dgdList_DoubleClick)
            ts.GridColumnStyles.Add(aColumnTextColumn)
        Next
        ts.AlternatingBackColor = Color.LightGray
        ts.AllowSorting = False
        ts.MappingName = dtData.TableName
        dgdList.TableStyles.Clear()
        dgdList.TableStyles.Add(ts)
        Dim dv As DataView = dtData.DefaultView
        dv.AllowNew = False
        dv.AllowDelete = False
        dv.AllowEdit = False
        '设置数据源
        dgdList.DataSource = dtData.DefaultView
        bmData = Me.BindingContext(DataSet11, "图书信息")
        lblCount.Text = "记录数:" + dtData.Rows.Count.ToString()
    End Sub

    Private Sub DGDoubleClick(ByVal sender As Object, ByVal e As MouseEventArgs)
        '判断两次单击时间是否小于双击的时间间隔
        If (DateTime.Now < gridMouseDownTime.AddMilliseconds(SystemInformation.DoubleClickTime)) Then
            '两次单击时间小于双击的时间间隔则调用dgdGoodInfo双击处理函数
            Me.dgdList_DoubleClick(Nothing, Nothing)
        End If
    End Sub

    Private Sub dgdList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles dgdList.DoubleClick
        Me.Close()
    End Sub

    Private Sub dgdList_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles dgdList.MouseDown
        '记住在dgdGoodInfo点下鼠标的时间
        gridMouseDownTime = DateTime.Now
    End Sub

    Public Function GetInfo() As String
        '获得DataGrid当前被选中的行号
        Dim iRow As Integer = dgdList.CurrentRowIndex
        Dim sId As String
        '获取DataGrid当前被选中的行的内容
        sId = dtData.Rows(iRow)("编号").ToString()
        Return sId
    End Function
End Class