dscustomers.vb

Mastering VBNet Include Source Code

            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.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnCustomerID}, true))
            Me.columnCustomerID.AllowDBNull = false
            Me.columnCustomerID.Unique = true
            Me.columnCompanyName.AllowDBNull = false
        End Sub
        
        Public Function NewCustomersRow() As CustomersRow
            Return CType(Me.NewRow,CustomersRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            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
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    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
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class CustomersRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As CustomersRow
        
        Private eventAction As 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