save（lblClassID.Text）
End If
If（btnSave.CommandArgument=”Update”）Then
update（lblClassID.Text）
End If
End Sub
Private Sub Mydatagrid_ItemCommand（ByVal source As Object，ByVal e As System.Web.UI.
WebControls.DataGridCommandEventArgs）Handles MydataGrid.ItemCommand
If e.Item.ItemType=ListItemType.Pager Or_
e.Item.ItemType=ListItemType.Header Then
Exit Sub
If e.CommandName=”Select”Then
lblAttriID.Text=e.Item.Cells（0）.Text
txtAttriName.Text=e.Item.Cells（1）.Text
Dim myConn As New SqlConnection（”server=（local）；database=ComponentSystem；Trusted_Connection=yes”）
myConn.Open（）
Dim StrSQL As String
StrSQL=”SELECT AttributeInstruction as exper1 FROM tb_ClassAttribute whereAttributeID=’”+lblAttriID.Text+”’”
Dim myCommand As SqlCommand=New SqlCommand（StrSQL，myConn）
Dim desp As String
desp=CType（myCommand.ExecuteScalar（），String）
txtAttriIns.Text=desp
StrSQL=”SELECT AttributeExample as exper1 FROM tb_ClassAttribute where AttributeID=’”+
lblAttriID.Text+”’”
myCommand=New SqlCommand（StrSQL，myConn）
desp=CType（myCommand.ExecuteScalar（），String）
txtAttriEg.Text=desp
StrSQL=”SELECT AttributeType as exper1 FROM tb_ClassAttribute where AttributeID=’”+lblAttriID.Text+”’”
myCommand=New SqlCommand（StrSQL，myConn）
desp=CType（myCommand.ExecuteScalar（），String）
txtAttriType.Text=desp
btnSave.CommandArgument=”Update”
lblMessage.Text=”单击修改更新属性”
lblMessage.Visible=True
txtAttriName.ReadOnly=True
txtAttriIns.ReadOnly=True
txtAttriEg.ReadOnly=True
txtAttriType.ReadOnly=True
btnAdd.Enabled=False
btnEdit.Enabled=True
btnSave.Enabled=False
btnCancel.Enabled=True
ChangeLink（）
lblSave.Text=””
End If
If e.CommandName=”Delete”Then
If（e.Item.Cells（0）.Text=lblAttriID.Text）Then
lblAttriID.Text=””
txtAttriName.Text=””
txtAttriIns.Text=””
txtAttriEg.Text=””
txtAttriType.Text=””
lblSave.Text=””
txtBox_init（）
End If
Dim myConn As New SqlConnection（”server=（local）；database=ComponentSystem；Trusted_Connection=yes”）
myConn.Open（）
Dim StrSQL As String
strSQL=”Delete from tb_ClassAttribute where AttributeID=’”+e.Item.Cells（0）.Text+”’”
Dim myCommand As SqlCommand=New SqlCommand（StrSQL，myConn）
myCommand.ExecuteNonQuery（）
MYbind（lblClassID.Text）
txtBox_init（）
lblSave.Text=””
End If
End Sub
Private Sub btnEdit_Click（ByVal sender As System.Object，ByVal e AsSystem.EventArgs）Handles btnEdit.Click
txtAttriName.Enabled=False
txtAttriIns.ReadOnly=False
txtAttriEg.ReadOnly=False
txtAttriType.ReadOnly=False
lblSave.Text=””
btnSave.CommandArgument=”Update”
btnEdit.Enabled=False
btnAdd.Enabled=False
btnSave.Enabled=True
btnCancel.Enabled=True
lblMessage.Visible=False
unable_Link（）
lblSave.Text=””
End Sub
Private Sub btnCancel_Click（ByVal sender As System.Object，ByVal e AsSystem.EventArgs）Handles btnCancel.Click
lblAttriID.Text=””
txtAttriName.Text=””
txtAttriIns.Text=””
txtAttriEg.Text=””
txtAttriType.Text=””
lblSave.Text=””
txtBox_init（）
End Sub
Private Sub MydataGrid_PageIndexChanged（ByVal source As Object，ByVal e AsSystem.Web.UI. WebControls.DataGridPageChangedEventArgs）Handles Mydata—Grid.PageIndexChanged
startIndex=e.NewPageIndex*MydataGrid.PageSize
MydataGrid.CurrentPageIndex=e.NewPageIndex
MYbind（lblClassID.Text）
End Sub
End Class
7.基类，父类信息添加，删除页面
说明：以下代码为添加，删除基类信息页面的vb代码。父类信息的添加与之相仿。
页面1
Imports System.Data
Imports System.Data.SqlClient
Public Class wfrmBase
Inherits System.Web.UI.Page
#Region”Web窗体设计器生成的代码”
’该调用是Web窗体设计器所必需的。
Private Sub InitializeComponent（）
End Sub
Private Sub Page_Init（ByVal sender As System.Object，ByVal e As System.EventArgs）Handles MyBase.Init
’CODEGEN：此方法调用是Web窗体设计器所必需的
’不要使用代码编辑器修改它。
InitializeComponent（）
End Sub
#End Region
Protected WithEvents Mydatagrid As System.Web.UI.WebControls.DataGrid
Protected WithEvents lblSave As System.Web.UI.WebControls.Label
Protected WithEvents btnCancel As System.Web.UI.WebControls.Button
Protected WithEvents btnSave As System.Web.UI.WebControls.Button
Protected WithEvents lblBaseName As System.Web.UI.WebControls.Label
Protected WithEvents Label3 As System.Web.UI.WebControls.Label
Protected WithEvents lblBaseID As System.Web.UI.WebControls.Label
Protected WithEvents Label1 As System.Web.UI.WebControls.Label
Protected WithEvents lblClassID As System.Web.UI.WebControls.Label
Protected WithEvents lblError As System.Web.UI.WebControls.Label
Protected WithEvents Label5 As System.Web.UI.WebControls.Label
Protected WithEvents Label2 As System.Web.UI.WebControls.Label
Protected WithEvents lblClassName As System.Web.UI.WebControls.Label
Protected WithEvents lblMessage As System.Web.UI.WebControls.Label
Protected WithEvents hlkAdd As System.Web.UI.WebControls.HyperLink
Protected WithEvents hlkAttribute As System.Web.UI.WebControls.HyperLink
Protected WithEvents hlkMethod As System.Web.UI.WebControls.HyperLink
Protected WithEvents hlkEvent As System.Web.UI.WebControls.HyperLink
Protected WithEvents hlkSuper As System.Web.UI.WebControls.HyperLink
Protected WithEvents hlkClass As System.Web.UI.WebControls.HyperLink
Protected WithEvents Label7 As System.Web.UI.WebControls.Label
Private versionID As String
Private BaseName As String
Private ClassID As String
Private BaseID As String
Private startIndex As Integer
Private Sub ChangeLink（）
Dim myConn As New SqlConnection （”server=（local）；database=ComponentSystem；Trusted_Connection=yes”）
myConn.Open（）
Dim StrSQL As String
StrSQL=”Select VersionID FROM tb_ClassInformation where ClassId=’”+ClassID+”’”
