1與0的世界

Partial Class Default2
    Inherits System.Web.UI.Page

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        '抓主版頁面上的ContentPlaceHolder裡的 TextBox
        Dim txtbx1_from_prev_page As TextBox

        If (Me.PreviousPage IsNot Nothing AndAlso _
        Me.PreviousPage.IsCrossPagePostBack) Then

            Dim cntPlaceHolderAsControl As Control
            Dim cntPlaceHolder As ContentPlaceHolder

            cntPlaceHolderAsControl = Me.PreviousPage.Master.FindControl("ContentPlaceHolder1")

            If (cntPlaceHolderAsControl IsNot Nothing) Then

                cntPlaceHolder = CType(cntPlaceHolderAsControl, ContentPlaceHolder)

                txtbx1_from_prev_page = CType(cntPlaceHolder.FindControl("TextBox1"), TextBox)

                Me.Label1.Text = txtbx1_from_prev_page.Text

                '抓主版頁面上的 TextBox
                'Dim txtbx1_from_prev_page_master As TextBox
                'txtbx1_from_prev_page_master = CType(Me.PreviousPage.Master.FindControl("TextBox1"), TextBox)

                'Me.Label1.Text = txtbx1_from_prev_page_master.Text
            End If

        Else

            Me.Label1.Text = "not"

        End If

    End Sub
End Class