調用中繼器內的按鈕或下拉列表

Question

我在repeater內有label和dropdownlist。當我點擊中繼器外的按鈕時，我想訪問label.Text值和ddl.SelectedIndex值。

<asp:Repeater ID="rptProduct" runat="server" DataSourceID="objdsProduct" OnItemCommand="rptProduct"> 
    <ItemTemplate> 
    <div> 
     <div> 
     <asp:Label ID="lblProdName" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label> 
     </div> 
     <div> 
     <asp:DropDownList ID="ddlSize" runat="server" AutoPostBack="False" DataSourceID="objdsSize" DataTextField="SizeName" AppendDataBoundItems="True" DataValueField="SizeID"> 
      <asp:ListItem Text="select a size" Value=0></asp:ListItem> 
     </asp:DropDownList> 
    </div> 
    </ItemTemplate> 
</asp:Repeater> 

<asp:Button ID="btnChoose" runat="server" Text="Choose Products" /> 

任何建議，我怎麼可以在訪問和ddlSize.SelectedValue：

Protected Sub btnChoose_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnChoose.Click 

    Dim ProductName 
    Dim Size 

End Sub 

謝謝您的時間。

Answer 1

添加到您的按鈕點擊：

Dim item As RepeaterItem 
For Each item In rptProduct.Items 
    Dim ProductName As String = DirectCast(item.FindControl("lblProdName"), Label).Text 
Dim Size As Integer = (DirectCast(item.FindControl("ddlSize"), DropDownList).SelectedValue 
Next item 

Answer 2

Dim ProductName As String = DirectCast(rptProduct.FindControl("lblProductName"), Label).Text 
    Dim Size As Integer = DirectCast(rptProduct.FindControl("ddlSize"), DropDownList).SelectedValue 

但是......您將如何確定您想要從中繼器中獲取值？

有一個look at this MSDN page，比較特別的位：

Sub R1_ItemCommand(Sender As Object, e As RepeaterCommandEventArgs) 
    Label2.Text = "Button " & _ 
     Repeater1.Items(e.Item.ItemIndex).ItemIndex.ToString() & _ 
     " has just been clicked! <br />" 
End Sub 

Answer 3

你必須重複轉發行....

protected void btnChoose_Click(object sender, EventArgs e) 
{ 
    foreach (RepeaterItem item in Repeater1.Items) 
    { 
     Label lblProdName = item.FindControl("lblProdName") as Label; 
     lblProdName.Text ......... 
     DropDownList ddlSize = item.FindControl("ddlSize") as DropDownList; 
     ddlSize.SelectedValue ......... 

    } 
}