[英]Rendering an asp.net user control in a Panel
我創建了這個asp.net用戶控件(僅是此堆棧溢出后的示例)
HTML:
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="ucBTN.ascx.vb" Inherits="EBC_SAK_MVV_BTN.web.ucBTN" %>
<div>
<asp:Button ID="btnLeft" runat="server" Width="200" Height="100" CssClass="btn btn-sq-lg btn-primary" Text="Button-Left" />
<asp:Button ID="btnMiddle" runat="server" Width="200" Height="100" CssClass="btn btn-sq-lg btn-primary" Text="Button-Middle" />
<asp:Button ID="btnRight" runat="server" Width="200" Height="100" CssClass="btn btn-sq-lg btn-primary" Text="Button-Right" />
</div>
后面的代碼:
Public Class ucBTN
Inherits System.Web.UI.UserControl
Public Property TextLeft As String
Public Property TextMiddle As String
Public Property TextRight As String
End Class
當我在頁面中使用此用戶控件時,它會起作用(test.aspx):
<%@ Page Title="" Language="vb" AutoEventWireup="false" MasterPageFile="~/EBC.Master" CodeBehind="TEST.aspx.vb" Inherits="EBC_SAK_MVV_BTN.web.TEST" %>
<%@ Register Src="~/ucBTN.ascx" TagPrefix="uc1" TagName="ucBTN" %>
<uc1:ucBTN runat="server" ID="myBTN" />
但是,當我在頁面上添加面板並將用戶控件添加到該面板時,它保持空白:
HTML:
<asp:Panel ID="Panel1" runat="server"></asp:Panel>
后面的代碼:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim BTN As New ucBTN
BTN.TextLeft = "LEFT"
BTN.TextMiddle = "MIDDLE"
BTN.TextRight = "RIGHT"
Panel1.Controls.Add(BTN)
End Sub
我想在運行時創建數十個這些控件-如何將它們添加到面板中?
在用戶控件中使用:
<asp:PlaceHolder ID="PlaceHolder1" runat="server">
在使用后的代碼中:
PlaceHolder1.Controls.Add(BTN)
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