dataset1.vb

用vb.net写的基于c/s结构的进销存程序设计源代码

            Return CType(Me.Rows.Find(New Object() {CustomerID}),CustomerRow)
        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 CustomerDataTable = CType(MyBase.Clone,CustomerDataTable)
            cln.InitVars
            Return cln
        End Function
        
        Friend Sub InitVars()
            Me.columnCustomerID = Me.Columns("CustomerID")
            Me.columnAttribName = Me.Columns("AttribName")
            Me.columnCompanyName = Me.Columns("CompanyName")
            Me.columnContact = Me.Columns("Contact")
            Me.columnPhone = Me.Columns("Phone")
            Me.columnFax = Me.Columns("Fax")
            Me.columnAddress = Me.Columns("Address")
        End Sub
        
        Private Sub InitClass()
            Me.columnCustomerID = New DataColumn("CustomerID", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCustomerID)
            Me.columnAttribName = New DataColumn("AttribName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAttribName)
            Me.columnCompanyName = New DataColumn("CompanyName", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnCompanyName)
            Me.columnContact = New DataColumn("Contact", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnContact)
            Me.columnPhone = New DataColumn("Phone", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnPhone)
            Me.columnFax = New DataColumn("Fax", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnFax)
            Me.columnAddress = New DataColumn("Address", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.columnAddress)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.columnCustomerID}, true))
            Me.columnCustomerID.AllowDBNull = false
            Me.columnCustomerID.Unique = true
            Me.columnAttribName.AllowDBNull = false
        End Sub
        
        Public Function NewCustomerRow() As CustomerRow
            Return CType(Me.NewRow,CustomerRow)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New CustomerRow(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(CustomerRow)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.CustomerRowChangedEvent) Is Nothing) Then
                RaiseEvent CustomerRowChanged(Me, New CustomerRowChangeEvent(CType(e.Row,CustomerRow), e.Action))
            End If
        End Sub
        
        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
        
        Public Property CompanyName As String
            Get
                Try 
                    Return CType(Me(Me.tableCustomer.CompanyNameColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomer.CompanyNameColumn) = value
            End Set
        End Property
        
        Public Property Contact As String
            Get
                Try 
                    Return CType(Me(Me.tableCustomer.ContactColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomer.ContactColumn) = value
            End Set
        End Property
        
        Public Property Phone As String
            Get
                Try 
                    Return CType(Me(Me.tableCustomer.PhoneColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomer.PhoneColumn) = value
            End Set
        End Property
        
        Public Property Fax As String
            Get
                Try 
                    Return CType(Me(Me.tableCustomer.FaxColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomer.FaxColumn) = value
            End Set
        End Property
        
        Public Property Address As String
            Get
                Try 
                    Return CType(Me(Me.tableCustomer.AddressColumn),String)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("無法取得值，因為它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.tableCustomer.AddressColumn) = value
            End Set
        End Property
        
        Public Function IsCompanyNameNull() As Boolean
            Return Me.IsNull(Me.tableCustomer.CompanyNameColumn)
        End Function
        
        Public Sub SetCompanyNameNull()
            Me(Me.tableCustomer.CompanyNameColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsContactNull() As Boolean
            Return Me.IsNull(Me.tableCustomer.ContactColumn)
        End Function
        
        Public Sub SetContactNull()
            Me(Me.tableCustomer.ContactColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsPhoneNull() As Boolean
            Return Me.IsNull(Me.tableCustomer.PhoneColumn)
        End Function
        
        Public Sub SetPhoneNull()
            Me(Me.tableCustomer.PhoneColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsFaxNull() As Boolean
            Return Me.IsNull(Me.tableCustomer.FaxColumn)
        End Function
        
        Public Sub SetFaxNull()
            Me(Me.tableCustomer.FaxColumn) = System.Convert.DBNull
        End Sub
        
        Public Function IsAddressNull() As Boolean
            Return Me.IsNull(Me.tableCustomer.AddressColumn)
        End Function
        
        Public Sub SetAddressNull()
            Me(Me.tableCustomer.AddressColumn) = System.Convert.DBNull
        End Sub
    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
End Class