获取asp.net中的嵌套控件

本文关键字：嵌套 控件 asp net 获取 | 更新日期: 2023-09-27 18:11:14

我有一个父用户控件，我在其中注册了一个子用户控件。我想访问从母版页继承的aspx页中的子用户控件中存在的控件。

下面是我的代码: 
//Parent UserControl
    public partial class WebUserControlParent : System.Web.UI.UserControl
    {
        public WebUserControlChild checkbox
        {
            get
            {
                return this.checkbox;
            }
        }
        public WebUserControlChild label
        {
            set
            {
                this.label = value;
            }
            get
            {
                return this.label;
            }
        }
        protected void Page_Load(object sender, EventArgs e)
        {
        }
    }
//Child User Control : 
     public partial class WebUserControlChild : System.Web.UI.UserControl
    {
        public bool Checked
        {
            set
            {
                this.checkboxchild.Checked = value;
            }
        }
        public string Text
        {
            set
            {
                this.labelchild.Text = "YooHoo!";
            }
        }
        protected void Page_Load(object sender, EventArgs e)
        {
        }
    }
//My Aspx Page:
     public partial class WebForm1 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            this.PageControl.checkbox.Checked = true;
            this.PageControl.label.Text = "YoooHooo!";
        }
    }
//My Parent usercontrol .ascx stuff
    <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControlParent.ascx.cs"
    Inherits="WebApplication2.WebUserControlParent" %>
<%@ Register Src="~/WebUserControlChild.ascx" TagName="Child" TagPrefix="cc" %>
//My Child Usercontrol Stuff
        <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControlChild.ascx.cs"
        Inherits="WebApplication2.WebUserControlChild" %>
    <asp:CheckBox ID="checkboxchild" runat="server" Checked="false" />
    <asp:Label ID="labelchild" runat="server"></asp:Label>
//My ASPX Page Stuff
    <%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true"
    CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>
    <%@ Register Src="~/WebUserControlParent.ascx" TagName="Control" TagPrefix="cc" %>
    <asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
    </asp:Content>
    <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
        <cc:Control ID="PageControl" runat="server" />
    </asp:Content>

当我这样做的时候，我的代码说线程兴奋与一些代码…谁能告诉我我做错了什么，应该怎么解决这个问题…由于

获取asp.net中的嵌套控件

我假设您在输出窗口中谈论消息?(所以不是编译错误或运行时错误?)

在这种情况下，这是正常的行为。每次客户端对页面进行请求时，都会启动一个线程，当页面呈现并发送回客户端时，该线程将终止并产生此消息。没什么好担心的。

参见:http://msdn.microsoft.com/en-us/library/bs4c1wda.aspx

你的父控件代码将是这样的

//Parent UserControl
public partial class WebUserControlParent : System.Web.UI.UserControl
{
    public WebUserControlChild mChildControl
    {
        get
        {
            return this.ctrlChild;
        }
        set{
           this.ctrlChild = value;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

子控件隐藏代码将为

 public partial class WebUserControlChild : System.Web.UI.UserControl
{
    public bool Checked
    {
        set
        {
            this.checkboxchild.Checked = value;
        }
        get{
            return this.checkboxchild.Checked;
        }
    }
    public string Text
    {
        set
        {
            this.labelchild.Text = value;
        }
        get{
            return this.labelchild.Text;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    {
    }
}

aspx页面代码将是

public partial class WebForm1 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        this.ctrlPageControl.mChildControl.Checked = true;
        this.ctrlPageControl.mChildControl.Text = "YoooHooo!";
    }
}

//My Parent usercontrol .ascx stuff

  <%@ Control Language="C#" AutoEventWireup="true"   CodeBehind="WebUserControlParent.ascx.cs"
  Inherits="WebApplication2.WebUserControlParent" %>
  <%@ Register Src="~/WebUserControlChild.ascx" TagName="Child" TagPrefix="cc" %>
  <cc:Control ID="ctrlChild" runat="server" />

//My Child Usercontrol Stuff

    <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControlChild.ascx.cs"
    Inherits="WebApplication2.WebUserControlChild" %>
    <asp:CheckBox ID="checkboxchild" runat="server" Checked="false" />
    <asp:Label ID="labelchild" runat="server"></asp:Label>

//My ASPX Page Stuff

  <%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true"
CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>
  <%@ Register Src="~/WebUserControlParent.ascx" TagName="Control" TagPrefix="cc" %>
  <asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server">
  </asp:Content>
  <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <cc:Control ID="ctrlPageControl" runat="server" />
  </asp:Content>
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