Visual Basic .NET - Read Less - Learn More/Visual_Basic.NET_Read_Less_Learn_More_Richard_Bowman_Visual_2002.iso/Resources/Code/Ch9-WorkWithDataRows/DsNorthwind.vb

Text File | 2001-08-23 | 20KB | 538 lines

'------------------------------------------------------------------------------
' <autogenerated>
'     This code was generated by a tool.
'     Runtime Version: 1.0.2914.16
'
'     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")>  _
Public Class DsNorthwind
    Inherits System.Data.DataSet

    Private tableCustomers As CustomersDataTable

    Public Sub New()
        MyBase.New
        Me.InitClass
    End Sub

    Private Sub New(ByVal info As SerializationInfo, ByVal context As StreamingContext)
        MyBase.New
        Me.InitClass
        Me.GetSerializationData(info, context)
    End Sub

    <System.ComponentModel.Browsable(false),  _
     System.ComponentModel.DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Content)>  _
    Public ReadOnly Property Customers As CustomersDataTable
        Get
            Return Me.tableCustomers
        End Get
    End Property

    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.ReadXml(reader, XmlReadMode.IgnoreSchema)
    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

    Private Sub InitClass()
        Me.DataSetName = "DsNorthwind"
        Me.Namespace = "http://www.tempuri.org/DsNorthwind.xsd"
        Me.tableCustomers = New CustomersDataTable
        Me.Tables.Add(Me.tableCustomers)
    End Sub

    Private Function ShouldSerializeCustomers() As Boolean
        Return false
    End Function

    Public Delegate Sub CustomersRowChangeEventHandler(ByVal sender As Object, ByVal e As CustomersRowChangeEvent)

    Public Class CustomersDataTable
        Inherits DataTable
        Implements System.Collections.IEnumerable

        Private columnCustomerID As DataColumn

        Private columnCompanyName As DataColumn

        Private columnContactName As DataColumn

        Private columnContactTitle As DataColumn

        Private columnAddress As DataColumn

        Private columnCity As DataColumn

        Private column_Region As DataColumn

        Private columnPostalCode As DataColumn

        Private columnCountry As DataColumn

        Private columnPhone As DataColumn

        Private columnFax As DataColumn

        Friend Sub New()
            MyBase.New("Customers")
            Me.InitClass
        End Sub

        <System.ComponentModel.Browsable(false)>  _
        Public ReadOnly Property Count As Integer
            Get
                Return Me.Rows.Count
            End Get
        End Property

        Friend ReadOnly Property CustomerIDColumn As DataColumn
            Get
                Return Me.columnCustomerID
            End Get
        End Property

        Friend ReadOnly Property CompanyNameColumn As DataColumn
            Get
                Return Me.columnCompanyName
            End Get
        End Property

        Friend ReadOnly Property ContactNameColumn As DataColumn
            Get
                Return Me.columnContactName
            End Get
        End Property

        Friend ReadOnly Property ContactTitleColumn As DataColumn
            Get
                Return Me.columnContactTitle
            End Get
        End Property

        Friend ReadOnly Property AddressColumn As DataColumn
            Get
                Return Me.columnAddress
            End Get
        End Property

        Friend ReadOnly Property CityColumn As DataColumn
            Get
                Return Me.columnCity
            End Get
        End Property

        Friend ReadOnly Property _RegionColumn As DataColumn
            Get
                Return Me.column_Region
            End Get
        End Property

        Friend ReadOnly Property PostalCodeColumn As DataColumn
            Get
                Return Me.columnPostalCode
            End Get
        End Property

        Friend ReadOnly Property CountryColumn As DataColumn
            Get
                Return Me.columnCountry
            End Get
        End Property

        Friend ReadOnly Property PhoneColumn As DataColumn
            Get
                Return Me.columnPhone
            End Get
        End Property

        Friend ReadOnly Property FaxColumn As DataColumn
            Get
                Return Me.columnFax
            End Get
        End Property

        Public Default ReadOnly Property Item(ByVal index As Integer) As CustomersRow
            Get
                Return CType(Me.Rows(index),CustomersRow)
            End Get
        End Property

        Public Event CustomersRowChanged As CustomersRowChangeEventHandler

        Public Event CustomersRowChanging As CustomersRowChangeEventHandler

        Public Event CustomersRowDeleted As CustomersRowChangeEventHandler

        Public Event CustomersRowDeleting As CustomersRowChangeEventHandler

        Public Overloads Sub AddCustomersRow(ByVal row As CustomersRow)
            Me.Rows.Add(row)
        End Sub

        Public Overloads Function AddCustomersRow(ByVal CustomerID As String, ByVal CompanyName As String, ByVal ContactName As String, ByVal ContactTitle As String, ByVal Address As String, ByVal City As String, ByVal _Region As String, ByVal PostalCode As String, ByVal Country As String, ByVal Phone As String, ByVal Fax As String) As CustomersRow
            Dim rowCustomersRow As CustomersRow = CType(Me.NewRow,CustomersRow)
            rowCustomersRow.ItemArray = New Object() {CustomerID, CompanyName, ContactName, ContactTitle, Address, City, _Region, PostalCode, Country, Phone, Fax}
            Me.Rows.Add(rowCustomersRow)
            Return rowCustomersRow
        End Function

        Public Function FindByCustomerID(ByVal CustomerID As String) As CustomersRow
            Return CType(Me.Rows.Find(New Object() {CustomerID}),CustomersRow)
        End Function

        Public Function GetEnumerator() As System.Collections.IEnumerator Implements System.Collections.IEnumerable.GetEnumerator
            Return Me.Rows.GetEnumerator
        End Function

        Private Sub InitClass()
            Me.columnCustomerID = New DataColumn("CustomerID", GetType(System.String), "", System.Data.MappingType.Element)
            Me.columnCustomerID.AllowDBNull = false
            Me.columnCustomerID.Unique = true
            Me.Columns.Add(Me.columnCustomerID)
            Me.columnCompanyName = New DataColumn("CompanyName", GetType(System.String), "", System.Data.MappingType.Element)
            Me.columnCompanyName.AllowDBNull = false
            Me.Columns.Add(Me.columnCompanyName)
            Me.columnContactName = New DataColumn("ContactName", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnContactName)
            Me.columnContactTitle = New DataColumn("ContactTitle", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnContactTitle)
            Me.columnAddress = New DataColumn("Address", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAddress)
            Me.columnCity = New DataColumn("City", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCity)
            Me.column_Region = New DataColumn("Region", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.column_Region)
            Me.columnPostalCode = New DataColumn("PostalCode", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPostalCode)
            Me.columnCountry = New DataColumn("Country", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCountry)
            Me.columnPhone = New DataColumn("Phone", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPhone)
            Me.columnFax = New DataColumn("Fax", GetType(System.String), "", System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnFax)
            Me.PrimaryKey = New DataColumn() {Me.columnCustomerID}
        End Sub

        Public Function NewCustomersRow() As CustomersRow
            Return CType(Me.NewRow,CustomersRow)
        End Function

        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            'We need to ensure that all Rows in the tabled are typed rows.
            'Table calls newRow whenever it needs to create a row.
            'So the following conditions are covered by Row newRow(Record record)
            '* Cursor calls table.addRecord(record)
            '* table.addRow(object[] values) calls newRow(record)
            Return New CustomersRow(builder)
        End Function

        Protected Overrides Function GetRowType() As System.Type
            Return GetType(CustomersRow)
        End Function

        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.CustomersRowChangedEvent) Is Nothing) Then
                RaiseEvent CustomersRowChanged(Me, New CustomersRowChangeEvent(CType(e.Row,CustomersRow), e.Action))
            End If
        End Sub

        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.CustomersRowChangingEvent) Is Nothing) Then
                RaiseEvent CustomersRowChanging(Me, New CustomersRowChangeEvent(CType(e.Row,CustomersRow), e.Action))
            End If
        End Sub

        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.CustomersRowDeletedEvent) Is Nothing) Then
                RaiseEvent CustomersRowDeleted(Me, New CustomersRowChangeEvent(CType(e.Row,CustomersRow), e.Action))
            End If
        End Sub

        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.CustomersRowDeletingEvent) Is Nothing) Then
                RaiseEvent CustomersRowDeleting(Me, New CustomersRowChangeEvent(CType(e.Row,CustomersRow), e.Action))
            End If
        End Sub

        Public Sub RemoveCustomersRow(ByVal row As CustomersRow)
            Me.Rows.Remove(row)
        End Sub
    End Class

    Public Class CustomersRow
        Inherits DataRow

        Private tableCustomers As CustomersDataTable

        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.tableCustomers = CType(Me.Table,CustomersDataTable)
        End Sub

        Public Property CustomerID As String
            Get
                Return CType(Me(Me.tableCustomers.CustomerIDColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.CustomerIDColumn) = value
            End Set
        End Property

        Public Property CompanyName As String
            Get
                Return CType(Me(Me.tableCustomers.CompanyNameColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.CompanyNameColumn) = value
            End Set
        End Property

        Public Property ContactName As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.ContactNameColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.ContactNameColumn) = value
            End Set
        End Property

        Public Property ContactTitle As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.ContactTitleColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.ContactTitleColumn) = value
            End Set
        End Property

        Public Property Address As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.AddressColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.AddressColumn) = value
            End Set
        End Property

        Public Property City As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.CityColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.CityColumn) = value
            End Set
        End Property

        Public Property _Region As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers._RegionColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers._RegionColumn) = value
            End Set
        End Property

        Public Property PostalCode As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.PostalCodeColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.PostalCodeColumn) = value
            End Set
        End Property

        Public Property Country As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.CountryColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.CountryColumn) = value
            End Set
        End Property

        Public Property Phone As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.PhoneColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.PhoneColumn) = value
            End Set
        End Property

        Public Property Fax As String
            Get
                Try
                    Return CType(Me(Me.tableCustomers.FaxColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("Cannot get value because it is DBNull.", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomers.FaxColumn) = value
            End Set
        End Property

        Public Function IsContactNameNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.ContactNameColumn)
        End Function

        Public Sub SetContactNameNull()
            Me(Me.tableCustomers.ContactNameColumn) = System.Convert.DBNull
        End Sub

        Public Function IsContactTitleNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.ContactTitleColumn)
        End Function

        Public Sub SetContactTitleNull()
            Me(Me.tableCustomers.ContactTitleColumn) = System.Convert.DBNull
        End Sub

        Public Function IsAddressNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.AddressColumn)
        End Function

        Public Sub SetAddressNull()
            Me(Me.tableCustomers.AddressColumn) = System.Convert.DBNull
        End Sub

        Public Function IsCityNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.CityColumn)
        End Function

        Public Sub SetCityNull()
            Me(Me.tableCustomers.CityColumn) = System.Convert.DBNull
        End Sub

        Public Function Is_RegionNull() As Boolean
            Return Me.IsNull(Me.tableCustomers._RegionColumn)
        End Function

        Public Sub Set_RegionNull()
            Me(Me.tableCustomers._RegionColumn) = System.Convert.DBNull
        End Sub

        Public Function IsPostalCodeNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.PostalCodeColumn)
        End Function

        Public Sub SetPostalCodeNull()
            Me(Me.tableCustomers.PostalCodeColumn) = System.Convert.DBNull
        End Sub

        Public Function IsCountryNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.CountryColumn)
        End Function

        Public Sub SetCountryNull()
            Me(Me.tableCustomers.CountryColumn) = System.Convert.DBNull
        End Sub

        Public Function IsPhoneNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.PhoneColumn)
        End Function

        Public Sub SetPhoneNull()
            Me(Me.tableCustomers.PhoneColumn) = System.Convert.DBNull
        End Sub

        Public Function IsFaxNull() As Boolean
            Return Me.IsNull(Me.tableCustomers.FaxColumn)
        End Function

        Public Sub SetFaxNull()
            Me(Me.tableCustomers.FaxColumn) = System.Convert.DBNull
        End Sub
    End Class

    Public Class CustomersRowChangeEvent
        Inherits EventArgs

        Private eventRow As CustomersRow

        Private eventAction As System.Data.DataRowAction

        Public Sub New(ByVal row As CustomersRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub

        Public ReadOnly Property Row As CustomersRow
            Get
                Return Me.eventRow
            End Get
        End Property

        Public ReadOnly Property Action As DataRowAction
            Get
                Return Me.eventAction
            End Get
        End Property
    End Class
End Class