buymanage.vb

这是一个商务管理体系

            Me.columnUsername = New DataColumn("Username", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnUsername)
            Me.columnPassword = New DataColumn("Password", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPassword)
            Me.column级别 = New DataColumn("级别", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column级别)
            Me.column姓名 = New DataColumn("姓名", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column姓名)
            Me.column电话 = New DataColumn("电话", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column电话)
            Me.column地址 = New DataColumn("地址", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column地址)
            Me.column备注 = New DataColumn("备注", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column备注)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnid}, true))
            Me.columnid.AllowDBNull = false
            Me.columnid.Unique = true
            Me.columnUsername.AllowDBNull = false
            Me.columnPassword.AllowDBNull = false
            Me.column姓名.AllowDBNull = false
        End Sub
        
        Public Function New客户信息Row() As 客户信息Row
            Return CType(Me.NewRow,客户信息Row)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New 客户信息Row(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(客户信息Row)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.客户信息RowChangedEvent) Is Nothing) Then
                RaiseEvent 客户信息RowChanged(Me, New 客户信息RowChangeEvent(CType(e.Row,客户信息Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.客户信息RowChangingEvent) Is Nothing) Then
                RaiseEvent 客户信息RowChanging(Me, New 客户信息RowChangeEvent(CType(e.Row,客户信息Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.客户信息RowDeletedEvent) Is Nothing) Then
                RaiseEvent 客户信息RowDeleted(Me, New 客户信息RowChangeEvent(CType(e.Row,客户信息Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.客户信息RowDeletingEvent) Is Nothing) Then
                RaiseEvent 客户信息RowDeleting(Me, New 客户信息RowChangeEvent(CType(e.Row,客户信息Row), e.Action))
            End If
        End Sub
        
        Public Sub Remove客户信息Row(ByVal row As 客户信息Row)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 客户信息Row
        Inherits DataRow
        
        Private table客户信息 As 客户信息DataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.table客户信息 = CType(Me.Table,客户信息DataTable)
        End Sub
        
        Public Property id As Integer
            Get
                Return CType(Me(Me.table客户信息.idColumn),Integer)
            End Get
            Set
                Me(Me.table客户信息.idColumn) = value
            End Set
        End Property
        
        Public Property Username As String
            Get
                Return CType(Me(Me.table客户信息.UsernameColumn),String)
            End Get
            Set
                Me(Me.table客户信息.UsernameColumn) = value
            End Set
        End Property
        
        Public Property Password As String
            Get
                Return CType(Me(Me.table客户信息.PasswordColumn),String)
            End Get
            Set
                Me(Me.table客户信息.PasswordColumn) = value
            End Set
        End Property
        
        Public Property 级别 As String
            Get
                Try 
                    Return CType(Me(Me.table客户信息.级别Column),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table客户信息.级别Column) = value
            End Set
        End Property
        
        Public Property 姓名 As String
            Get
                Return CType(Me(Me.table客户信息.姓名Column),String)
            End Get
            Set
                Me(Me.table客户信息.姓名Column) = value
            End Set
        End Property
        
        Public Property 电话 As String
            Get
                Try 
                    Return CType(Me(Me.table客户信息.电话Column),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table客户信息.电话Column) = value
            End Set
        End Property
        
        Public Property 地址 As String
            Get
                Try 
                    Return CType(Me(Me.table客户信息.地址Column),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table客户信息.地址Column) = value
            End Set
        End Property
        
        Public Property 备注 As String
            Get
                Try 
                    Return CType(Me(Me.table客户信息.备注Column),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table客户信息.备注Column) = value
            End Set
        End Property
        
        Public Function Is级别Null() As Boolean
            Return Me.IsNull(Me.table客户信息.级别Column)
        End Function
        
        Public Sub Set级别Null()
            Me(Me.table客户信息.级别Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is电话Null() As Boolean
            Return Me.IsNull(Me.table客户信息.电话Column)
        End Function
        
        Public Sub Set电话Null()
            Me(Me.table客户信息.电话Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is地址Null() As Boolean
            Return Me.IsNull(Me.table客户信息.地址Column)
        End Function
        
        Public Sub Set地址Null()
            Me(Me.table客户信息.地址Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is备注Null() As Boolean
            Return Me.IsNull(Me.table客户信息.备注Column)
        End Function
        
        Public Sub Set备注Null()
            Me(Me.table客户信息.备注Column) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 客户信息RowChangeEvent
        Inherits EventArgs
        
        Private eventRow As 客户信息Row
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As 客户信息Row, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As 客户信息Row
            Get
                Return Me.eventRow
            End Get
        End Property
        
        Public ReadOnly Property Action As DataRowAction
            Get
                Return Me.eventAction
            End Get
        End Property
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 商品信息DataTable
        Inherits DataTable
        Implements System.Collections.IEnumerable
        
        Private columnid As DataColumn
        
        Private column名称 As DataColumn
        
        Private column种类 As DataColumn
        
        Private column规格 As DataColumn
        
        Private column库存数量 As DataColumn
        
        Private column价格 As DataColumn
        
        Private column描述 As DataColumn
        
        Private column备注 As DataColumn
        
        Friend Sub New()
            MyBase.New("商品信息")
            Me.InitClass
        End Sub
        
        Friend Sub New(ByVal table As DataTable)
            MyBase.New(table.TableName)
            If (table.CaseSensitive <> table.DataSet.CaseSensitive) Then
                Me.CaseSensitive = table.CaseSensitive
            End If
            If (table.Locale.ToString <> table.DataSet.Locale.ToString) Then
                Me.Locale = table.Locale
            End If
            If (table.Namespace <> table.DataSet.Namespace) Then
                Me.Namespace = table.Namespace
            End If
            Me.Prefix = table.Prefix
            Me.MinimumCapacity = table.MinimumCapacity
            Me.DisplayExpression = table.DisplayExpression
        End Sub
        
        <System.ComponentModel.Browsable(false)>  _
        Public ReadOnly Property Count As Integer
            Get
                Return Me.Rows.Count
            End Get
        End Property
        
        Friend ReadOnly Property idColumn As DataColumn
            Get
                Return Me.columnid
            End Get
        End Property
        
        Friend ReadOnly Property 名称Column As DataColumn
            Get
                Return Me.column名称
            End Get
        End Property
        
        Friend ReadOnly Property 种类Column As DataColumn
            Get
                Return Me.column种类
            End Get
        End Property
        
        Friend ReadOnly Property 规格Column As DataColumn
            Get
                Return Me.column规格
            End Get
        End Property
        
        Friend ReadOnly Property 库存数量Column As DataColumn
            Get
                Return Me.column库存数量
            End Get
        End Property
        
        Friend ReadOnly Property 价格Column As DataColumn
            Get
                Return Me.column价格
            End Get
        End Property
        
        Friend ReadOnly Property 描述Column As DataColumn
            Get
                Return Me.column描述
            End Get
        End Property
        
        Friend ReadOnly Property 备注Column As DataColumn
            Get
                Return Me.column备注
            End Get
        End Property
        
        Public Default ReadOnly Property Item(ByVal index As Integer) As 商品信息Row
            Get
                Return CType(Me.Rows(index),商品信息Row)
            End Get
        End Property
        
        Public Event 商品信息RowChanged As 商品信息RowChangeEventHandler
        
        Public Event 商品信息RowChanging As 商品信息RowChangeEventHandler
        
        Public Event 商品信息RowDeleted As 商品信息RowChangeEventHandler
        
        Public Event 商品信息RowDeleting As 商品信息RowChangeEventHandler
        
        Public Overloads Sub Add商品信息Row(ByVal row As 商品信息Row)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function Add商品信息Row(ByVal id As Integer, ByVal 名称 As String, ByVal 种类 As String, ByVal 规格 As String, ByVal 库存数量 As Integer, ByVal 价格 As Decimal, ByVal 描述 As String, ByVal 备注 As String) As 商品信息Row
            Dim row商品信息Row As 商品信息Row = CType(Me.NewRow,商品信息Row)
            row商品信息Row.ItemArray = New Object() {id, 名称, 种类, 规格, 库存数量, 价格, 描述, 备注}
            Me.Rows.Add(row商品信息Row)
            Return row商品信息Row
        End Function