使用loadcontrol時未觸發ASP.NET onselectedindexchanged事件

Question

在普通的vb類中，我使用下拉列表加載usercontrol

Dim products As UserControl = Page.LoadControl("~/Controls/Products.ascx")
                            products.ID = "Products"
                            tile.Controls.Add(products)

但是由於某種原因，我的onindexchanged事件（在usercontrol中）沒有觸發。

碼：

Partial Class Controls_Products
Inherits System.Web.UI.UserControl

Public Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
    If Not Page.IsPostBack Then
        Dim myPage As BasePage = CType(Me.Page, BasePage)
        Dim dsProducts As DataSet = eyeCatalogueFunctions.GetProduct(0, myPage.GetLang, myPage.GetCustid, 0, "", 0, Nothing, 0)

        If Not IsNothing(dsProducts) AndAlso dsProducts.Tables.Count > 0 AndAlso dsProducts.Tables(0).Rows.Count > 0 Then
            With Me.ddlProducts
                .DataSource = dsProducts.Tables(0)
                .DataTextField = "product_nam"
                .DataValueField = "seqproduct"
                .DataBind()
            End With

            Me.lblTest.Text = Me.ddlProducts.Items(0).Text
        End If
    End If

End Sub


Protected Sub ddlProducts_SelectedIndexChanged(sender As Object, e As EventArgs) Handles ddlProducts.SelectedIndexChanged
    'Do something

End Sub

用戶控件中沒有什么特別的：

<%@ Control Language="VB" AutoEventWireup="true" CodeFile="Products.ascx.vb" Inherits="Controls_Products" EnableViewState="true" %>

有任何想法嗎 ？

Answer 1

將產品控件的“檢查AutoPostBack”屬性設置為true 。

可能您可以將其設置為產品。AutoPostBack= true