ordersanddetails.vb

编程之道VB.NETt程序设计入门-589M.zip

'------------------------------------------------------------------------------
' <autogenerated>
'     This code was generated by a tool.
'     Runtime Version: 1.0.3705.0
'
'     Changes to this file may cause incorrect behavior and will be lost if 
'     the code is regenerated.
' </autogenerated>
'------------------------------------------------------------------------------

Option Strict Off
Option Explicit On

Imports System
Imports System.Data
Imports System.Runtime.Serialization
Imports System.Xml


<Serializable(),  _
 System.ComponentModel.DesignerCategoryAttribute("code"),  _
 System.Diagnostics.DebuggerStepThrough(),  _
 System.ComponentModel.ToolboxItem(true)>  _
Public Class OrdersAndDetails
    Inherits DataSet
    
    Private tableOrders As OrdersDataTable
    
    Private tableDetails As DetailsDataTable
    
    Private relationOrdersDetails As DataRelation
    
    Public Sub New()
        MyBase.New
        Me.InitClass
        Dim schemaChangedHandler As System.ComponentModel.CollectionChangeEventHandler = AddressOf Me.SchemaChanged
        AddHandler Me.Tables.CollectionChanged, schemaChangedHandler
        AddHandler Me.Relations.CollectionChanged, schemaChangedHandler
    End Sub
    
    Protected Sub New(ByVal info As SerializationInfo, ByVal context As StreamingContext)
        MyBase.New
        Dim strSchema As String = CType(info.GetValue("XmlSchema", GetType(System.String)),String)
        If (Not (strSchema) Is Nothing) Then
            Dim ds As DataSet = New DataSet
            ds.ReadXmlSchema(New XmlTextReader(New System.IO.StringReader(strSchema)))
            If (Not (ds.Tables("Orders")) Is Nothing) Then
                Me.Tables.Add(New OrdersDataTable(ds.Tables("Orders")))
            End If
            If (Not (ds.Tables("Details")) Is Nothing) Then
                Me.Tables.Add(New DetailsDataTable(ds.Tables("Details")))
            End If
            Me.DataSetName = ds.DataSetName
            Me.Prefix = ds.Prefix
            Me.Namespace = ds.Namespace
            Me.Locale = ds.Locale
            Me.CaseSensitive = ds.CaseSensitive
            Me.EnforceConstraints = ds.EnforceConstraints
            Me.Merge(ds, false, System.Data.MissingSchemaAction.Add)
            Me.InitVars
        Else
            Me.InitClass
        End If
        Me.GetSerializationData(info, context)
        Dim schemaChangedHandler As System.ComponentModel.CollectionChangeEventHandler = AddressOf Me.SchemaChanged
        AddHandler Me.Tables.CollectionChanged, schemaChangedHandler
        AddHandler Me.Relations.CollectionChanged, schemaChangedHandler
    End Sub
    
    <System.ComponentModel.Browsable(false),  _
     System.ComponentModel.DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Content)>  _
    Public ReadOnly Property Orders As OrdersDataTable
        Get
            Return Me.tableOrders
        End Get
    End Property
    
    <System.ComponentModel.Browsable(false),  _
     System.ComponentModel.DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Content)>  _
    Public ReadOnly Property Details As DetailsDataTable
        Get
            Return Me.tableDetails
        End Get
    End Property
    
    Public Overrides Function Clone() As DataSet
        Dim cln As OrdersAndDetails = CType(MyBase.Clone,OrdersAndDetails)
        cln.InitVars
        Return cln
    End Function
    
    Protected Overrides Function ShouldSerializeTables() As Boolean
        Return false
    End Function
    
    Protected Overrides Function ShouldSerializeRelations() As Boolean
        Return false
    End Function
    
    Protected Overrides Sub ReadXmlSerializable(ByVal reader As XmlReader)
        Me.Reset
        Dim ds As DataSet = New DataSet
        ds.ReadXml(reader)
        If (Not (ds.Tables("Orders")) Is Nothing) Then
            Me.Tables.Add(New OrdersDataTable(ds.Tables("Orders")))
        End If
        If (Not (ds.Tables("Details")) Is Nothing) Then
            Me.Tables.Add(New DetailsDataTable(ds.Tables("Details")))
        End If
        Me.DataSetName = ds.DataSetName
        Me.Prefix = ds.Prefix
        Me.Namespace = ds.Namespace
        Me.Locale = ds.Locale
        Me.CaseSensitive = ds.CaseSensitive
        Me.EnforceConstraints = ds.EnforceConstraints
        Me.Merge(ds, false, System.Data.MissingSchemaAction.Add)
        Me.InitVars
    End Sub
    
    Protected Overrides Function GetSchemaSerializable() As System.Xml.Schema.XmlSchema
        Dim stream As System.IO.MemoryStream = New System.IO.MemoryStream
        Me.WriteXmlSchema(New XmlTextWriter(stream, Nothing))
        stream.Position = 0
        Return System.Xml.Schema.XmlSchema.Read(New XmlTextReader(stream), Nothing)
    End Function
    
    Friend Sub InitVars()
        Me.tableOrders = CType(Me.Tables("Orders"),OrdersDataTable)
        If (Not (Me.tableOrders) Is Nothing) Then
            Me.tableOrders.InitVars
        End If
        Me.tableDetails = CType(Me.Tables("Details"),DetailsDataTable)
        If (Not (Me.tableDetails) Is Nothing) Then
            Me.tableDetails.InitVars
        End If
        Me.relationOrdersDetails = Me.Relations("OrdersDetails")
    End Sub
    
    Private Sub InitClass()
        Me.DataSetName = "OrdersAndDetails"
        Me.Prefix = ""
        Me.Namespace = "http://tempuri.org/OrdersAndDetails.xsd"
        Me.Locale = New System.Globalization.CultureInfo("en-US")
        Me.CaseSensitive = false
        Me.EnforceConstraints = true
        Me.tableOrders = New OrdersDataTable
        Me.Tables.Add(Me.tableOrders)
        Me.tableDetails = New DetailsDataTable
        Me.Tables.Add(Me.tableDetails)
        Dim fkc As ForeignKeyConstraint
        fkc = New ForeignKeyConstraint("OrdersDetails", New DataColumn() {Me.tableOrders.OrderIDColumn}, New DataColumn() {Me.tableDetails.OrderIDColumn})
        Me.tableDetails.Constraints.Add(fkc)
        fkc.AcceptRejectRule = AcceptRejectRule.None
        fkc.DeleteRule = Rule.Cascade
        fkc.UpdateRule = Rule.Cascade
        Me.relationOrdersDetails = New DataRelation("OrdersDetails", New DataColumn() {Me.tableOrders.OrderIDColumn}, New DataColumn() {Me.tableDetails.OrderIDColumn}, false)
        Me.Relations.Add(Me.relationOrdersDetails)
    End Sub
    
    Private Function ShouldSerializeOrders() As Boolean
        Return false
    End Function
    
    Private Function ShouldSerializeDetails() As Boolean
        Return false
    End Function
    
    Private Sub SchemaChanged(ByVal sender As Object, ByVal e As System.ComponentModel.CollectionChangeEventArgs)
        If (e.Action = System.ComponentModel.CollectionChangeAction.Remove) Then
            Me.InitVars
        End If
    End Sub
    
    Public Delegate Sub OrdersRowChangeEventHandler(ByVal sender As Object, ByVal e As OrdersRowChangeEvent)
    
    Public Delegate Sub DetailsRowChangeEventHandler(ByVal sender As Object, ByVal e As DetailsRowChangeEvent)
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class OrdersDataTable
        Inherits DataTable
        Implements System.Collections.IEnumerable
        
        Private columnOrderID As DataColumn
        
        Private columnOrderDate As DataColumn
        
        Private columnFreight As DataColumn
        
        Private columnShipName As DataColumn
        
        Friend Sub New()
            MyBase.New("Orders")
            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 OrderDateColumn As DataColumn
            Get
                Return Me.columnOrderDate
            End Get
        End Property
        
        Friend ReadOnly Property FreightColumn As DataColumn
            Get
                Return Me.columnFreight
            End Get
        End Property
        
        Friend ReadOnly Property ShipNameColumn As DataColumn
            Get
                Return Me.columnShipName
            End Get
        End Property
        
        Public Default ReadOnly Property Item(ByVal index As Integer) As OrdersRow
            Get
                Return CType(Me.Rows(index),OrdersRow)
            End Get
        End Property
        
        Public Event OrdersRowChanged As OrdersRowChangeEventHandler
        
        Public Event OrdersRowChanging As OrdersRowChangeEventHandler
        
        Public Event OrdersRowDeleted As OrdersRowChangeEventHandler
        
        Public Event OrdersRowDeleting As OrdersRowChangeEventHandler
        
        Public Overloads Sub AddOrdersRow(ByVal row As OrdersRow)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function AddOrdersRow(ByVal OrderID As Integer, ByVal OrderDate As Date, ByVal Freight As Double, ByVal ShipName As String) As OrdersRow
            Dim rowOrdersRow As OrdersRow = CType(Me.NewRow,OrdersRow)
            rowOrdersRow.ItemArray = New Object() {OrderID, OrderDate, Freight, ShipName}
            Me.Rows.Add(rowOrdersRow)
            Return rowOrdersRow
        End Function
        
        Public Function FindByOrderID(ByVal OrderID As Integer) As OrdersRow
            Return CType(Me.Rows.Find(New Object() {OrderID}),OrdersRow)
        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 OrdersDataTable = CType(MyBase.Clone,OrdersDataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New OrdersDataTable
        End Function
        
        Friend Sub InitVars()
            Me.columnOrderID = Me.Columns("OrderID")
            Me.columnOrderDate = Me.Columns("OrderDate")
            Me.columnFreight = Me.Columns("Freight")
            Me.columnShipName = Me.Columns("ShipName")
        End Sub
        
        Private Sub InitClass()
            Me.columnOrderID = New DataColumn("OrderID", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnOrderID)
            Me.columnOrderDate = New DataColumn("OrderDate", GetType(System.DateTime), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnOrderDate)
            Me.columnFreight = New DataColumn("Freight", GetType(System.Double), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnFreight)
            Me.columnShipName = New DataColumn("ShipName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnShipName)
            Me.Constraints.Add(New UniqueConstraint("OrdersAndDetailsKey1", New DataColumn() {Me.columnOrderID}, true))
            Me.columnOrderID.AllowDBNull = false
            Me.columnOrderID.Unique = true
        End Sub
        
        Public Function NewOrdersRow() As OrdersRow
            Return CType(Me.NewRow,OrdersRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New OrdersRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(OrdersRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.OrdersRowChangedEvent) Is Nothing) Then
                RaiseEvent OrdersRowChanged(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.OrdersRowChangingEvent) Is Nothing) Then
                RaiseEvent OrdersRowChanging(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.OrdersRowDeletedEvent) Is Nothing) Then
                RaiseEvent OrdersRowDeleted(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.OrdersRowDeletingEvent) Is Nothing) Then
                RaiseEvent OrdersRowDeleting(Me, New OrdersRowChangeEvent(CType(e.Row,OrdersRow), e.Action))
            End If
        End Sub
        
        Public Sub RemoveOrdersRow(ByVal row As OrdersRow)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class OrdersRow
        Inherits DataRow
        
        Private tableOrders As OrdersDataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableOrders = CType(Me.Table,OrdersDataTable)
        End Sub
        
        Public Property OrderID As Integer
            Get
                Return CType(Me(Me.tableOrders.OrderIDColumn),Integer)
            End Get
            Set