ds4.vb

高校科研管理系统

        End Property
        
        Public Default ReadOnly Property Item(ByVal index As Integer) As 管理员Row
            Get
                Return CType(Me.Rows(index),管理员Row)
            End Get
        End Property
        
        Public Event 管理员RowChanged As 管理员RowChangeEventHandler
        
        Public Event 管理员RowChanging As 管理员RowChangeEventHandler
        
        Public Event 管理员RowDeleted As 管理员RowChangeEventHandler
        
        Public Event 管理员RowDeleting As 管理员RowChangeEventHandler
        
        Public Overloads Sub Add管理员Row(ByVal row As 管理员Row)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function Add管理员Row(ByVal 帐号 As String, ByVal 密码 As String, ByVal 姓名 As String, ByVal 类型 As String) As 管理员Row
            Dim row管理员Row As 管理员Row = CType(Me.NewRow,管理员Row)
            row管理员Row.ItemArray = New Object() {帐号, 密码, 姓名, 类型}
            Me.Rows.Add(row管理员Row)
            Return row管理员Row
        End Function
        
        Public Function FindBy帐号(ByVal 帐号 As String) As 管理员Row
            Return CType(Me.Rows.Find(New Object() {帐号}),管理员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 管理员DataTable = CType(MyBase.Clone,管理员DataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New 管理员DataTable
        End Function
        
        Friend Sub InitVars()
            Me.column帐号 = Me.Columns("帐号")
            Me.column密码 = Me.Columns("密码")
            Me.column姓名 = Me.Columns("姓名")
            Me.column类型 = Me.Columns("类型")
        End Sub
        
        Private Sub InitClass()
            Me.column帐号 = New DataColumn("帐号", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column帐号)
            Me.column密码 = New DataColumn("密码", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column密码)
            Me.column姓名 = New DataColumn("姓名", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column姓名)
            Me.column类型 = New DataColumn("类型", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column类型)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.column帐号}, true))
            Me.column帐号.AllowDBNull = false
            Me.column帐号.Unique = true
            Me.column密码.AllowDBNull = false
            Me.column姓名.AllowDBNull = false
        End Sub
        
        Public Function New管理员Row() As 管理员Row
            Return CType(Me.NewRow,管理员Row)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New 管理员Row(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(管理员Row)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me.管理员RowChangedEvent) Is Nothing) Then
                RaiseEvent 管理员RowChanged(Me, New 管理员RowChangeEvent(CType(e.Row,管理员Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me.管理员RowChangingEvent) Is Nothing) Then
                RaiseEvent 管理员RowChanging(Me, New 管理员RowChangeEvent(CType(e.Row,管理员Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me.管理员RowDeletedEvent) Is Nothing) Then
                RaiseEvent 管理员RowDeleted(Me, New 管理员RowChangeEvent(CType(e.Row,管理员Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me.管理员RowDeletingEvent) Is Nothing) Then
                RaiseEvent 管理员RowDeleting(Me, New 管理员RowChangeEvent(CType(e.Row,管理员Row), e.Action))
            End If
        End Sub
        
        Public Sub Remove管理员Row(ByVal row As 管理员Row)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 管理员Row
        Inherits DataRow
        
        Private table管理员 As 管理员DataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.table管理员 = CType(Me.Table,管理员DataTable)
        End Sub
        
        Public Property 帐号 As String
            Get
                Return CType(Me(Me.table管理员.帐号Column),String)
            End Get
            Set
                Me(Me.table管理员.帐号Column) = value
            End Set
        End Property
        
        Public Property 密码 As String
            Get
                Return CType(Me(Me.table管理员.密码Column),String)
            End Get
            Set
                Me(Me.table管理员.密码Column) = value
            End Set
        End Property
        
        Public Property 姓名 As String
            Get
                Return CType(Me(Me.table管理员.姓名Column),String)
            End Get
            Set
                Me(Me.table管理员.姓名Column) = value
            End Set
        End Property
        
        Public Property 类型 As String
            Get
                Try 
                    Return CType(Me(Me.table管理员.类型Column),String)
                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管理员.类型Column) = value
            End Set
        End Property
        
        Public Function Is类型Null() As Boolean
            Return Me.IsNull(Me.table管理员.类型Column)
        End Function
        
        Public Sub Set类型Null()
            Me(Me.table管理员.类型Column) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class 管理员RowChangeEvent
        Inherits EventArgs
        
        Private eventRow As 管理员Row
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As 管理员Row, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As 管理员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