dsorders.vb

用vb.net写的基于c/s结构的进销存程序设计源代码

        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.CustomerRowChangingEvent) Is Nothing) Then
                RaiseEvent CustomerRowChanging(Me, New CustomerRowChangeEvent(CType(e.Row,CustomerRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.CustomerRowDeletedEvent) Is Nothing) Then
                RaiseEvent CustomerRowDeleted(Me, New CustomerRowChangeEvent(CType(e.Row,CustomerRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.CustomerRowDeletingEvent) Is Nothing) Then
                RaiseEvent CustomerRowDeleting(Me, New CustomerRowChangeEvent(CType(e.Row,CustomerRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveCustomerRow(ByVal row As CustomerRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class CustomerRow
        Inherits DataRow
        
        Private tableCustomer As CustomerDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableCustomer = CType(Me.Table,CustomerDataTable)
        End Sub
        
        Public Property CustomerID As String
            Get
                Return CType(Me(Me.tableCustomer.CustomerIDColumn),String)
            End Get
            Set
                Me(Me.tableCustomer.CustomerIDColumn) = value
            End Set
        End Property
        
        Public Property AttribName As String
            Get
                Return CType(Me(Me.tableCustomer.AttribNameColumn),String)
            End Get
            Set
                Me(Me.tableCustomer.AttribNameColumn) = value
            End Set
        End Property
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class CustomerRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As CustomerRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As CustomerRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As CustomerRow
            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 OrderDetailsDataTable
        Inherits DataTable
        Implements System.Collections.IEnumerable
        
        Private columnOrderID As DataColumn
        
        Private columnProductID As DataColumn
        
        Private columnQuantity As DataColumn
        
        Private columnUnitPrice As DataColumn
        
        Private columnDetailAmount As DataColumn
        
        Friend Sub New()
            MyBase.New("OrderDetails")
            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 OrderIDColumn As DataColumn
            Get
                Return Me.columnOrderID
            End Get
        End Property
        
        Friend ReadOnly Property ProductIDColumn As DataColumn
            Get
                Return Me.columnProductID
            End Get
        End Property
        
        Friend ReadOnly Property QuantityColumn As DataColumn
            Get
                Return Me.columnQuantity
            End Get
        End Property
        
        Friend ReadOnly Property UnitPriceColumn As DataColumn
            Get
                Return Me.columnUnitPrice
            End Get
        End Property
        
        Friend ReadOnly Property DetailAmountColumn As DataColumn
            Get
                Return Me.columnDetailAmount
            End Get
        End Property
        
        Public Default ReadOnly Property Item(ByVal index As Integer) As OrderDetailsRow
            Get
                Return CType(Me.Rows(index),OrderDetailsRow)
            End Get
        End Property
        
        Public Event OrderDetailsRowChanged As OrderDetailsRowChangeEventHandler
        
        Public Event OrderDetailsRowChanging As OrderDetailsRowChangeEventHandler
        
        Public Event OrderDetailsRowDeleted As OrderDetailsRowChangeEventHandler
        
        Public Event OrderDetailsRowDeleting As OrderDetailsRowChangeEventHandler
        
        Public Overloads Sub AddOrderDetailsRow(ByVal row As OrderDetailsRow)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function AddOrderDetailsRow(ByVal parentOrdersRowByOrdersOrderDetails As OrdersRow, ByVal ProductID As String, ByVal Quantity As Integer, ByVal UnitPrice As Integer, ByVal DetailAmount As Integer) As OrderDetailsRow
            Dim rowOrderDetailsRow As OrderDetailsRow = CType(Me.NewRow,OrderDetailsRow)
            rowOrderDetailsRow.ItemArray = New Object() {parentOrdersRowByOrdersOrderDetails(0), ProductID, Quantity, UnitPrice, DetailAmount}
            Me.Rows.Add(rowOrderDetailsRow)
            Return rowOrderDetailsRow
        End Function
        
        Public Function FindByOrderIDProductID(ByVal OrderID As String, ByVal ProductID As String) As OrderDetailsRow
            Return CType(Me.Rows.Find(New Object() {OrderID, ProductID}),OrderDetailsRow)
        End Function
        
        Public Function GetEnumerator() As System.Collections.IEnumerator Implements System.Collections.IEnumerable.GetEnumerator
            Return Me.Rows.GetEnumerator
        End Function
        
        Public Overrides Function Clone() As DataTable
            Dim cln As OrderDetailsDataTable = CType(MyBase.Clone,OrderDetailsDataTable)
            cln.InitVars
            Return cln
        End Function
        
        Friend Sub InitVars()
            Me.columnOrderID = Me.Columns("OrderID")
            Me.columnProductID = Me.Columns("ProductID")
            Me.columnQuantity = Me.Columns("Quantity")
            Me.columnUnitPrice = Me.Columns("UnitPrice")
            Me.columnDetailAmount = Me.Columns("DetailAmount")
        End Sub
        
        Private Sub InitClass()
            Me.columnOrderID = New DataColumn("OrderID", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnOrderID)
            Me.columnProductID = New DataColumn("ProductID", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnProductID)
            Me.columnQuantity = New DataColumn("Quantity", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnQuantity)
            Me.columnUnitPrice = New DataColumn("UnitPrice", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnUnitPrice)
            Me.columnDetailAmount = New DataColumn("DetailAmount", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnDetailAmount)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnOrderID, Me.columnProductID}, true))
            Me.columnOrderID.AllowDBNull = false
            Me.columnProductID.AllowDBNull = false
            Me.columnQuantity.AllowDBNull = false
            Me.columnUnitPrice.AllowDBNull = false
            Me.columnDetailAmount.AllowDBNull = false
        End Sub
        
        Public Function NewOrderDetailsRow() As OrderDetailsRow
            Return CType(Me.NewRow,OrderDetailsRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New OrderDetailsRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(OrderDetailsRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.OrderDetailsRowChangedEvent) Is Nothing) Then
                RaiseEvent OrderDetailsRowChanged(Me, New OrderDetailsRowChangeEvent(CType(e.Row,OrderDetailsRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.OrderDetailsRowChangingEvent) Is Nothing) Then
                RaiseEvent OrderDetailsRowChanging(Me, New OrderDetailsRowChangeEvent(CType(e.Row,OrderDetailsRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.OrderDetailsRowDeletedEvent) Is Nothing) Then
                RaiseEvent OrderDetailsRowDeleted(Me, New OrderDetailsRowChangeEvent(CType(e.Row,OrderDetailsRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.OrderDetailsRowDeletingEvent) Is Nothing) Then
                RaiseEvent OrderDetailsRowDeleting(Me, New OrderDetailsRowChangeEvent(CType(e.Row,OrderDetailsRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveOrderDetailsRow(ByVal row As OrderDetailsRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class OrderDetailsRow
        Inherits DataRow
        
        Private tableOrderDetails As OrderDetailsDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableOrderDetails = CType(Me.Table,OrderDetailsDataTable)
        End Sub
        
        Public Property OrderID As String
            Get
                Return CType(Me(Me.tableOrderDetails.OrderIDColumn),String)
            End Get
            Set
                Me(Me.tableOrderDetails.OrderIDColumn) = value
            End Set
        End Property
        
        Public Property ProductID As String
            Get
                Return CType(Me(Me.tableOrderDetails.ProductIDColumn),String)
            End Get
            Set
                Me(Me.tableOrderDetails.ProductIDColumn) = value
            End Set
        End Property
        
        Public Property Quantity As Integer
            Get
                Return CType(Me(Me.tableOrderDetails.QuantityColumn),Integer)
            End Get
            Set
                Me(Me.tableOrderDetails.QuantityColumn) = value
            End Set
        End Property
        
        Public Property UnitPrice As Integer
            Get
                Return CType(Me(Me.tableOrderDetails.UnitPriceColumn),Integer)
            End Get
            Set
                Me(Me.tableOrderDetails.UnitPriceColumn) = value
            End Set
        End Property
        
        Public Property DetailAmount As Integer
            Get
                Return CType(Me(Me.tableOrderDetails.DetailAmountColumn),Integer)
            End Get
            Set
                Me(Me.tableOrderDetails.DetailAmountColumn) = value
            End Set
        End Property
        
        Public Property OrdersRow As OrdersRow
            Get
                Return CType(Me.GetParentRow(Me.Table.ParentRelations("OrdersOrderDetails")),OrdersRow)
            End Get
            Set