dataset1.vb

VB与ACCESS数据库制作的的注册登陆查询系统

        End Function
        
        Public Sub SetpassNull()
            Me(Me.tableyonghu.passColumn) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class yonghuRowChangeEvent
        Inherits EventArgs
        
        Private eventRow As yonghuRow
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As yonghuRow, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As yonghuRow
            Get
                Return Me.eventRow
            End Get
        End Property
        
        Public ReadOnly Property Action As DataRowAction
            Get
                Return Me.eventAction
            End Get
        End Property
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class _123DataTable
        Inherits DataTable
        Implements System.Collections.IEnumerable
        
        Private column班级 As DataColumn
        
        Private column年龄 As DataColumn
        
        Private column姓名 As DataColumn
        
        Private column学号 As DataColumn
        
        Private column职务 As DataColumn
        
        Friend Sub New()
            MyBase.New("123")
            Me.InitClass
        End Sub
        
        Friend Sub New(ByVal table As DataTable)
            MyBase.New(table.TableName)
            If (table.CaseSensitive <> table.DataSet.CaseSensitive) Then
                Me.CaseSensitive = table.CaseSensitive
            End If
            If (table.Locale.ToString <> table.DataSet.Locale.ToString) Then
                Me.Locale = table.Locale
            End If
            If (table.Namespace <> table.DataSet.Namespace) Then
                Me.Namespace = table.Namespace
            End If
            Me.Prefix = table.Prefix
            Me.MinimumCapacity = table.MinimumCapacity
            Me.DisplayExpression = table.DisplayExpression
        End Sub
        
        <System.ComponentModel.Browsable(false)>  _
        Public ReadOnly Property Count As Integer
            Get
                Return Me.Rows.Count
            End Get
        End Property
        
        Friend ReadOnly Property 班级Column As DataColumn
            Get
                Return Me.column班级
            End Get
        End Property
        
        Friend ReadOnly Property 年龄Column As DataColumn
            Get
                Return Me.column年龄
            End Get
        End Property
        
        Friend ReadOnly Property 姓名Column As DataColumn
            Get
                Return Me.column姓名
            End Get
        End Property
        
        Friend ReadOnly Property 学号Column As DataColumn
            Get
                Return Me.column学号
            End Get
        End Property
        
        Friend ReadOnly Property 职务Column As DataColumn
            Get
                Return Me.column职务
            End Get
        End Property
        
        Public Default ReadOnly Property Item(ByVal index As Integer) As _123Row
            Get
                Return CType(Me.Rows(index),_123Row)
            End Get
        End Property
        
        Public Event _123RowChanged As _123RowChangeEventHandler
        
        Public Event _123RowChanging As _123RowChangeEventHandler
        
        Public Event _123RowDeleted As _123RowChangeEventHandler
        
        Public Event _123RowDeleting As _123RowChangeEventHandler
        
        Public Overloads Sub Add_123Row(ByVal row As _123Row)
            Me.Rows.Add(row)
        End Sub
        
        Public Overloads Function Add_123Row(ByVal 班级 As String, ByVal 年龄 As String, ByVal 姓名 As String, ByVal 学号 As String, ByVal 职务 As String) As _123Row
            Dim row_123Row As _123Row = CType(Me.NewRow,_123Row)
            row_123Row.ItemArray = New Object() {班级, 年龄, 姓名, 学号, 职务}
            Me.Rows.Add(row_123Row)
            Return row_123Row
        End Function
        
        Public Function FindBy学号(ByVal 学号 As String) As _123Row
            Return CType(Me.Rows.Find(New Object() {学号}),_123Row)
        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 _123DataTable = CType(MyBase.Clone,_123DataTable)
            cln.InitVars
            Return cln
        End Function
        
        Protected Overrides Function CreateInstance() As DataTable
            Return New _123DataTable
        End Function
        
        Friend Sub InitVars()
            Me.column班级 = Me.Columns("班级")
            Me.column年龄 = Me.Columns("年龄")
            Me.column姓名 = Me.Columns("姓名")
            Me.column学号 = Me.Columns("学号")
            Me.column职务 = Me.Columns("职务")
        End Sub
        
        Private Sub InitClass()
            Me.column班级 = New DataColumn("班级", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column班级)
            Me.column年龄 = New DataColumn("年龄", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column年龄)
            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学号 = New DataColumn("学号", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column学号)
            Me.column职务 = New DataColumn("职务", GetType(System.String), Nothing, System.Data.MappingType.Element)
            Me.Columns.Add(Me.column职务)
            Me.Constraints.Add(New UniqueConstraint("Constraint1", New DataColumn() {Me.column学号}, true))
            Me.column学号.AllowDBNull = false
            Me.column学号.Unique = true
        End Sub
        
        Public Function New_123Row() As _123Row
            Return CType(Me.NewRow,_123Row)
        End Function
        
        Protected Overrides Function NewRowFromBuilder(ByVal builder As DataRowBuilder) As DataRow
            Return New _123Row(builder)
        End Function
        
        Protected Overrides Function GetRowType() As System.Type
            Return GetType(_123Row)
        End Function
        
        Protected Overrides Sub OnRowChanged(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanged(e)
            If (Not (Me._123RowChangedEvent) Is Nothing) Then
                RaiseEvent _123RowChanged(Me, New _123RowChangeEvent(CType(e.Row,_123Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowChanging(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowChanging(e)
            If (Not (Me._123RowChangingEvent) Is Nothing) Then
                RaiseEvent _123RowChanging(Me, New _123RowChangeEvent(CType(e.Row,_123Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleted(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleted(e)
            If (Not (Me._123RowDeletedEvent) Is Nothing) Then
                RaiseEvent _123RowDeleted(Me, New _123RowChangeEvent(CType(e.Row,_123Row), e.Action))
            End If
        End Sub
        
        Protected Overrides Sub OnRowDeleting(ByVal e As DataRowChangeEventArgs)
            MyBase.OnRowDeleting(e)
            If (Not (Me._123RowDeletingEvent) Is Nothing) Then
                RaiseEvent _123RowDeleting(Me, New _123RowChangeEvent(CType(e.Row,_123Row), e.Action))
            End If
        End Sub
        
        Public Sub Remove_123Row(ByVal row As _123Row)
            Me.Rows.Remove(row)
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class _123Row
        Inherits DataRow
        
        Private table_123 As _123DataTable
        
        Friend Sub New(ByVal rb As DataRowBuilder)
            MyBase.New(rb)
            Me.table_123 = CType(Me.Table,_123DataTable)
        End Sub
        
        Public Property 班级 As String
            Get
                Try 
                    Return CType(Me(Me.table_123.班级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_123.班级Column) = value
            End Set
        End Property
        
        Public Property 年龄 As String
            Get
                Try 
                    Return CType(Me(Me.table_123.年龄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_123.年龄Column) = value
            End Set
        End Property
        
        Public Property 姓名 As String
            Get
                Try 
                    Return CType(Me(Me.table_123.姓名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_123.姓名Column) = value
            End Set
        End Property
        
        Public Property 学号 As String
            Get
                Return CType(Me(Me.table_123.学号Column),String)
            End Get
            Set
                Me(Me.table_123.学号Column) = value
            End Set
        End Property
        
        Public Property 职务 As String
            Get
                Try 
                    Return CType(Me(Me.table_123.职务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_123.职务Column) = value
            End Set
        End Property
        
        Public Function Is班级Null() As Boolean
            Return Me.IsNull(Me.table_123.班级Column)
        End Function
        
        Public Sub Set班级Null()
            Me(Me.table_123.班级Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is年龄Null() As Boolean
            Return Me.IsNull(Me.table_123.年龄Column)
        End Function
        
        Public Sub Set年龄Null()
            Me(Me.table_123.年龄Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is姓名Null() As Boolean
            Return Me.IsNull(Me.table_123.姓名Column)
        End Function
        
        Public Sub Set姓名Null()
            Me(Me.table_123.姓名Column) = System.Convert.DBNull
        End Sub
        
        Public Function Is职务Null() As Boolean
            Return Me.IsNull(Me.table_123.职务Column)
        End Function
        
        Public Sub Set职务Null()
            Me(Me.table_123.职务Column) = System.Convert.DBNull
        End Sub
    End Class
    
    <System.Diagnostics.DebuggerStepThrough()>  _
    Public Class _123RowChangeEvent
        Inherits EventArgs
        
        Private eventRow As _123Row
        
        Private eventAction As DataRowAction
        
        Public Sub New(ByVal row As _123Row, ByVal action As DataRowAction)
            MyBase.New
            Me.eventRow = row
            Me.eventAction = action
        End Sub
        
        Public ReadOnly Property Row As _123Row
            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