当我添加一个产品后，在datagrid 里不会马上显示，只有当重新刷新后才会显示！
请问是什么原因啊？？？
谢谢！！

下面是相关的代码：
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
            If Not Page.IsPostBack Then
                Trace.Warn("dddd")
                binddata()
            End If
        End Sub
        
Sub binddata()
            Dim ds As New DataSet
            Dim tb As DataTable
            Dim sql As String
            Dim dv As DataView
            Dim connstr As String
            Dim ss As New rui1
            sql = "select * from anclass"
            tb = ss.gettable(sql)
            dganclass.DataSource = tb.DefaultView
            dganclass.DataBind()
        End Sub

        Private Sub tj_ServerClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tj.ServerClick
            Dim anclass_str, order_str, sql As String
            Dim ss As New rui1
            anclass_str = anclass_txt.Value
            order_str = order_txt.Value
            sql = "insert into anclass(anclass,aa) values('" + anclass_str + "','" + order_str + "')"
            ss.exesql(sql)
            Call binddata()
        End Sub