de.vb

一个功能强大的学生公寓管理系统 界面非常友好 十分强大

        
        Public Event 住宿统计RowDeleting As 住宿统计RowChangeEventHandler
        
        Public Overloads Sub Add住宿统计Row(ByVal row As 住宿统计Row)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function Add住宿统计Row(ByVal 栋号 As String, ByVal 房号 As String, ByVal 总床位 As Integer, ByVal 已住床位 As Integer, ByVal 剩余床位 As Integer) As 住宿统计Row
            Dim row住宿统计Row As 住宿统计Row = CType(Me.NewRow,住宿统计Row)
            row住宿统计Row.ItemArray = New Object() {栋号, 房号, 总床位, 已住床位, 剩余床位}
            Me.Rows.Add(row住宿统计Row)
            Return row住宿统计Row
        End Function
        
        Public Function FindBy栋号房号(ByVal 栋号 As String, ByVal 房号 As String) As 住宿统计Row
            Return CType(Me.Rows.Find(New Object() {栋号, 房号}),住宿统计Row)
        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 住宿统计DataTable = CType(MyBase.Clone,住宿统计DataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New 住宿统计DataTable
        End Function
        
        Friend Sub InitVars()
            Me.column栋号 = Me.Columns("栋号")
            Me.column房号 = Me.Columns("房号")
            Me.column总床位 = Me.Columns("总床位")
            Me.column已住床位 = Me.Columns("已住床位")
            Me.column剩余床位 = Me.Columns("剩余床位")
        End Sub
        
        Private Sub InitClass()
            Me.column栋号 = New DataColumn("栋号", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column栋号)
            Me.column房号 = New DataColumn("房号", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column房号)
            Me.column总床位 = New DataColumn("总床位", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column总床位)
            Me.column已住床位 = New DataColumn("已住床位", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column已住床位)
            Me.column剩余床位 = New DataColumn("剩余床位", GetType(System.Int32), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column剩余床位)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.column栋号, Me.column房号}, true))
            Me.column栋号.AllowDBNull = false
            Me.column房号.AllowDBNull = false
        End Sub
        
        Public Function New住宿统计Row() As 住宿统计Row
            Return CType(Me.NewRow,住宿统计Row)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New 住宿统计Row(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(住宿统计Row)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.住宿统计RowChangedEvent) Is Nothing) Then
                RaiseEvent 住宿统计RowChanged(Me, New 住宿统计RowChangeEvent(CType(e.Row,住宿统计Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.住宿统计RowChangingEvent) Is Nothing) Then
                RaiseEvent 住宿统计RowChanging(Me, New 住宿统计RowChangeEvent(CType(e.Row,住宿统计Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.住宿统计RowDeletedEvent) Is Nothing) Then
                RaiseEvent 住宿统计RowDeleted(Me, New 住宿统计RowChangeEvent(CType(e.Row,住宿统计Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.住宿统计RowDeletingEvent) Is Nothing) Then
                RaiseEvent 住宿统计RowDeleting(Me, New 住宿统计RowChangeEvent(CType(e.Row,住宿统计Row), e.Action))
            End If
        End Sub
        
        Public Sub Remove住宿统计Row(ByVal row As 住宿统计Row)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 住宿统计Row
        Inherits DataRow
        
        Private table住宿统计 As 住宿统计DataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.table住宿统计 = CType(Me.Table,住宿统计DataTable)
        End Sub
        
        Public Property 栋号 As String
            Get
                Return CType(Me(Me.table住宿统计.栋号Column),String)
            End Get
            Set
                Me(Me.table住宿统计.栋号Column) = value
            End Set
        End Property
        
        Public Property 房号 As String
            Get
                Return CType(Me(Me.table住宿统计.房号Column),String)
            End Get
            Set
                Me(Me.table住宿统计.房号Column) = value
            End Set
        End Property
        
        Public Property 总床位 As Integer
            Get
                Try 
                    Return CType(Me(Me.table住宿统计.总床位Column),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table住宿统计.总床位Column) = value
            End Set
        End Property
        
        Public Property 已住床位 As Integer
            Get
                Try 
                    Return CType(Me(Me.table住宿统计.已住床位Column),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table住宿统计.已住床位Column) = value
            End Set
        End Property
        
        Public Property 剩余床位 As Integer
            Get
                Try 
                    Return CType(Me(Me.table住宿统计.剩余床位Column),Integer)
                Catch e As InvalidCastException
                    Throw New StrongTypingException("无法获取值，因为它是 DBNull。", e)
                End Try
            End Get
            Set
                Me(Me.table住宿统计.剩余床位Column) = value
            End Set
        End Property
        
        Public Function Is总床位Null() As Boolean
            Return Me.IsNull(Me.table住宿统计.总床位Column)
        End Function
        
        Public Sub Set总床位Null()
            Me(Me.table住宿统计.总床位Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is已住床位Null() As Boolean
            Return Me.IsNull(Me.table住宿统计.已住床位Column)
        End Function
        
        Public Sub Set已住床位Null()
            Me(Me.table住宿统计.已住床位Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is剩余床位Null() As Boolean
            Return Me.IsNull(Me.table住宿统计.剩余床位Column)
        End Function
        
        Public Sub Set剩余床位Null()
            Me(Me.table住宿统计.剩余床位Column) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 住宿统计RowChangeEvent
        Inherits EventArgs
        
        Private eventRow As 住宿统计Row
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As 住宿统计Row, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As 住宿统计Row
            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