dscustomers.vb

采用Visual Bacis.NET开发的电子商务系统.

                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 System.Guid, ByVal CustomerName As String, ByVal EmailAddress As String, ByVal Password As String, ByVal CustomerType As Integer, ByVal FirstName As String, ByVal LastName As String, ByVal AccountStatus As Integer, ByVal DateCreated As Date) As CustomersRow
            Dim rowCustomersRow As CustomersRow = CType(Me.NewRow,CustomersRow)
            rowCustomersRow.ItemArray = New Object() {CustomerID, CustomerName, EmailAddress, Password, CustomerType, FirstName, LastName, AccountStatus, DateCreated}
            Me.Rows.Add(rowCustomersRow)
            Return rowCustomersRow
        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 CustomersDataTable = CType(MyBase.Clone,CustomersDataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New CustomersDataTable
        End Function
        
        Friend Sub InitVars()
            Me.columnCustomerID = Me.Columns("CustomerID")
            Me.columnCustomerName = Me.Columns("CustomerName")
            Me.columnEmailAddress = Me.Columns("EmailAddress")
            Me.columnPassword = Me.Columns("Password")
            Me.columnCustomerType = Me.Columns("CustomerType")
            Me.columnFirstName = Me.Columns("FirstName")
            Me.columnLastName = Me.Columns("LastName")
            Me.columnAccountStatus = Me.Columns("AccountStatus")
            Me.columnDateCreated = Me.Columns("DateCreated")
        End Sub
        
        Private Sub InitClass()
            Me.columnCustomerID = New DataColumn("CustomerID", GetType(System.Guid), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerID)
            Me.columnCustomerName = New DataColumn("CustomerName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerName)
            Me.columnEmailAddress = New DataColumn("EmailAddress", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnEmailAddress)
            Me.columnPassword = New DataColumn("Password", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPassword)
            Me.columnCustomerType = New DataColumn("CustomerType", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerType)
            Me.columnFirstName = New DataColumn("FirstName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnFirstName)
            Me.columnLastName = New DataColumn("LastName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnLastName)
            Me.columnAccountStatus = New DataColumn("AccountStatus", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAccountStatus)
            Me.columnDateCreated = New DataColumn("DateCreated", GetType(System.DateTime), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnDateCreated)
            Me.columnCustomerID.AllowDBNull = false
            Me.columnCustomerName.AllowDBNull = false
            Me.columnEmailAddress.AllowDBNull = false
            Me.columnPassword.AllowDBNull = false
            Me.columnCustomerType.AllowDBNull = false
            Me.columnFirstName.AllowDBNull = false
            Me.columnLastName.AllowDBNull = false
            Me.columnAccountStatus.AllowDBNull = false
            Me.columnDateCreated.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 System.Guid
            Get
                Return CType(Me(Me.tableCustomers.CustomerIDColumn),System.Guid)
            End Get
            Set
                Me(Me.tableCustomers.CustomerIDColumn) = value
            End Set
        End Property
        
        Public Property CustomerName As String
            Get
                Return CType(Me(Me.tableCustomers.CustomerNameColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.CustomerNameColumn) = value
            End Set
        End Property
        
        Public Property EmailAddress As String
            Get
                Return CType(Me(Me.tableCustomers.EmailAddressColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.EmailAddressColumn) = value
            End Set
        End Property
        
        Public Property Password As String
            Get
                Return CType(Me(Me.tableCustomers.PasswordColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.PasswordColumn) = value
            End Set
        End Property
        
        Public Property CustomerType As Integer
            Get
                Return CType(Me(Me.tableCustomers.CustomerTypeColumn),Integer)
            End Get
            Set
                Me(Me.tableCustomers.CustomerTypeColumn) = value
            End Set
        End Property
        
        Public Property FirstName As String
            Get
                Return CType(Me(Me.tableCustomers.FirstNameColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.FirstNameColumn) = value
            End Set
        End Property
        
        Public Property LastName As String
            Get
                Return CType(Me(Me.tableCustomers.LastNameColumn),String)
            End Get
            Set
                Me(Me.tableCustomers.LastNameColumn) = value
            End Set
        End Property
        
        Public Property AccountStatus As Integer
            Get
                Return CType(Me(Me.tableCustomers.AccountStatusColumn),Integer)
            End Get
            Set
                Me(Me.tableCustomers.AccountStatusColumn) = value
            End Set
        End Property
        
        Public Property DateCreated As Date
            Get
                Return CType(Me(Me.tableCustomers.DateCreatedColumn),Date)
            End Get
            Set
                Me(Me.tableCustomers.DateCreatedColumn) = value
            End Set
        End Property
    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