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Question

同級控制我有一個Repeater結構是這樣的：

<asp:Repeater ID="rptListClaimTypes" runat="server"> 
    <ItemTemplate> 
     <asp:FileUpload ID="fuContract" runat="server" /> 
     <asp:LinkButton ID="btnUpload" runat="server" Text="Upload" OnClick="btnUpload_Click" CommandName='<%# Eval("ClaimTypeID")%>' /> 
    </ItemTemplate> 
</asp:Repeater> 

我需要的是點擊btnUpload時處理文件上傳。我可以通過sender訪問觸發子程序的控件。我將如何訪問fuContract？

Protected Sub btnUpload_Click(sender As Object, e As EventArgs) 

    Dim ClaimTypeID As Integer = sender.CommandName 
    Dim fuContract As FileUpload = '?? 

End Sub 

Answer 1

使用當前事件的方法處理，你會投發件人爲一個LinkBut​​ton，鑄母爲的RepeaterItem，然後使用的FindControl找到FileUpload控件：

Dim fuContract As FileUpload = CType(CType(sender, LinkButton).Parent.FindControl("fuContract"), FileUpload) 

我更喜歡處理這些類型的事件使用中繼器的ItemCommand事件雖然：

Private Sub rptListClaimTypes_ItemCommand(source As Object, e As RepeaterCommandEventArgs) Handles rptListClaimTypes.ItemCommand 

    Dim fuContract As FileUpload = CType(e.Item.FindControl("fuContract"), FileUpload) 

End Sub