0

我已经为此挠头好几个小时了。我有一个用户控件，其中包含标签、文本框等。所有这些都包含在更新面板中。我在 uc 中有一个按钮，单击该按钮会更改标签。

当我将此 uc 放入表单/页面时，无论我做什么，我都看不到标签发生变化。它已更改为服务器端，但未更改为客户端。我总是尝试更新模式，以触发器为条件，我尝试了一切。脚本管理器很好，如果我将代码复制到它自己的页面，它就可以正常工作。脚本管理器在页面上，而不是 uc，所以不是这样。

有没有人有这个或任何例子？

aspx：

<%@ Page Title="" Language="C#" MasterPageFile="~/KezberProjectManager.Master" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="KezberProjectManager.WebForm1" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>
<%@ Register assembly="KezberProjectManager" namespace="KezberProjectManager" tagprefix="cc1" %>

<%@ Register src="ProjectView.ascx" tagname="ProjectView" tagprefix="uc1" %>

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <div>

            <uc1:ProjectView ID="ProjectView1"  runat="server" PID="76"  />

 </div>

</asp:Content>

UC:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ProjectView.ascx.cs" Inherits="KezberProjectManager.ProjectView1" %>
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>    
<style type="text/css">
        .style1
        {
            width: 100%;
        }
    </style>
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" ChildrenAsTriggers="false" runat="server">
    <ContentTemplate>
        <asp:Panel ID="pnl" runat="server">
    <div id="kez_header">
        <table class="style1">
            <tr>
                <td>
                    <h4 runat="server" id="main_label">
                        Project</h4>
                </td>
                <td align="right" valign="middle">
                    <asp:Button ID="btnTasks" runat="server" CssClass="btn btn-primary"
                        Text="Tasks" Width="81px" onclick="btnTasks_Click" />

                </td>
            </tr>
        </table>
    </div>
     <div class="form-horizontal">
        <div class="control-group">
            <label class="control-label" for="<%=txtTitle.ClientID%>">
                Title</label>
            <div class="controls">
                <asp:TextBox ID="txtTitle" placeholder="Title" runat="server"></asp:TextBox>
            </div>
        </div>
        <div class="control-group">
            <label class="control-label" for="<%=txtDescription.ClientID%>">
                Description</label>
            <div class="controls">
                <asp:TextBox ID="txtDescription" placeholder="Description" runat="server" Rows="3" TextMode="MultiLine"></asp:TextBox>
            </div>
        </div>
        <div class="control-group">
            <label class="control-label" for="<%=lblEstimatedHours.ClientID%>">
                Estimated Hours</label>
            <div class="controls">
              <label class="checkbox label-block">
                    <div id="lblEstimatedHours" runat="server">
                        Data</div>
                </label>
            </div>
        </div>
     <div class="control-group">
            <label class="control-label" for="<%=txtColor.ClientID%>">
                Color</label>
            <div class="controls">
                <asp:TextBox ID="txtColor" runat="server" Width="80px" MaxLength="6"></asp:TextBox>
                <asp:FilteredTextBoxExtender ID="txtColor_FilteredTextBoxExtender" 
                    runat="server" TargetControlID="txtColor" ValidChars="0123456789abcdefABCDEF">
                </asp:FilteredTextBoxExtender>
                <asp:ColorPickerExtender ID="txtColor_ColorPickerExtender" runat="server" 
                    TargetControlID="txtColor" SampleControlID="btnColor" PopupButtonID="btnColor">
                </asp:ColorPickerExtender>
                <asp:Button ID="btnColor" runat="server" Text="" CssClass="btn-color" Width="25px" />
            </div>
        </div>
        <asp:Button CssClass="btn" ID="btnEdit" runat="server" Text="Save Changes" onclick="btnEdit_Click" 
          />
    </div>
    </asp:Panel>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="btnEdit" EventName="Click" />
    </Triggers>
</asp:UpdatePanel>

uc代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Transactions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using LibKezberProjectManager;
using LibKezberProjectManager.Logic;
using LibKezberProjectManager.Utility;
using LibKezberProjectManager.Web;

namespace KezberProjectManager
{
    public partial class ProjectView1 : System.Web.UI.UserControl
    {
        private int workingID = -1;
        private string pid;
        private Project workingProject = null;

        public String PID
        {
            get
            {
                return pid;
            }
            set
            {
                pid = value;
                if (!HandleRequestType())
                {
                    HandleOnClickDisabled();
                    HandleMainLabel();

                    pnl.DefaultButton = "btnEdit";

                    if (workingProject != null)
                    {
                         PopulateEditMode();
                    }
                }


            }
        }


        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnTasks_Click(object sender, EventArgs e)
        {
           // Response.Redirect(String.Format("Tasks.aspx?id={0}", workingProject.ProjectID));
        }



        public void HandleOnClickDisabled()
        {
            //btnEdit.Attributes.Add("onclick", "this.disabled=true;" + GetPostBackEventReference(btnEdit).ToString());
        }

        public bool HandleRequestType()
        {
            string strId = pid;
            bool invalidPage = false;

            //id is required, can be new or valid id
            if (strId == null)
            {
                invalidPage = true;
            }
            else
            {
                int.TryParse(strId, out workingID);

                workingProject = ProjectManager.GetProject(workingID);
                //must be valid project
                if (workingProject == null)
                {
                    invalidPage = true;
                }

            }

            if (invalidPage)
            {
                //Response.Redirect("Forbidden.aspx");
            }

            return invalidPage;
        }

        public void HandleMainLabel()
        {
            main_label.InnerText = workingProject.ProjectTitle;
        }

        public void PopulateEditMode()
        {
            txtTitle.Text = workingProject.ProjectTitle;
            txtDescription.Text = workingProject.ProjectDescription;
            if (workingProject.EstimatedHours != null)
                lblEstimatedHours.InnerText = workingProject.EstimatedHours.ToString();
            else
                lblEstimatedHours.InnerText = "";

            if (workingProject.Color != null)
            {
                System.Drawing.Color color = System.Drawing.Color.FromArgb((int)workingProject.Color);
                txtColor.Text = String.Format("{0:X2}{1:X2}{2:X2}", color.R, color.G, color.B);
            }

        }



        protected void btnEdit_Click(object sender, EventArgs e)
        {
            KezErrorList errors = new KezErrorList();
            bool didSomething = false;
            bool changedColor = false;

            using (var scope = new TransactionScope())
            {
                try
                {
                    if (txtTitle.Text != workingProject.ProjectTitle
                        && txtTitle.Text.Length > 0)
                    {
                        didSomething = true;

                        bool success = ProjectManager.ChangeProjectTitle(
                            workingProject.ProjectID, txtTitle.Text);

                        if (!success)
                        {
                            errors.Add("There was a problem changing the title.");
                        }
                    }
                    else if (txtTitle.Text != workingProject.ProjectTitle)
                    {
                        errors.Add("A title is required.");
                    }

                    if (txtDescription.Text != workingProject.ProjectDescription)
                    {
                        didSomething = true;

                        bool success = ProjectManager.ChangeProjectDescription(
                            workingProject.ProjectID, txtDescription.Text);

                        if (!success)
                        {
                            errors.Add("There was a problem changing the description.");
                        }
                    }

                    try
                    {
                        System.Drawing.Color color =
                            ColorConversion.GetSystemDrawingColorFromHexString("#" + txtColor.Text);

                        if (workingProject.Color == null || color.ToArgb() != (int)workingProject.Color)
                        {
                            changedColor = true;
                            if (!ColorManager.ChangeProjectColor(workingProject.ProjectID, color.ToArgb()))
                            {
                                errors.Add("There was a problem changing the color.");
                            }
                        }
                    }
                    catch (Exception)
                    {
                        errors.Add("The color provided is invalid.");
                    }

                    if (errors.Count() == 0 && didSomething)
                    {
                        if (!SyncManager.Instance.UpdateProject(workingProject))
                        {
                            errors.Add("There was a problem syncing with 1 or more sources.");
                        }
                    }



                    if (errors.Count() == 0)
                    {
                        scope.Complete();
                    }
                }
                catch (Exception ex)
                {
                    errors.Add("An unknown error has occured.");
                }

            }

                if (errors.Count() > 0)
                {
                   // master.ShowErrorAlert(errors.GetErrorString());
                }
                else if (didSomething || changedColor)
                {
                    //master.ShowSuccessAlert();
                    //refresh
                    if (workingProject != null)
                    {
                        workingProject = ProjectManager.GetProject(workingProject.ProjectID);
                    }

                    HandleMainLabel();
                    PopulateEditMode();
                }

                UpdatePanel1.Update();
        }
    }
}

掌握：

<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="KezberProjectManager.master.cs" Inherits="KezberProjectManager.KezberProjectManager" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>

    <!-- Le styles -->
    <link href="assets/css/bootstrap.css" rel="stylesheet"/>
    <link href="assets/css/bootstrap-responsive.css" rel="stylesheet"/>
    <link href="assets/css/kezblu.styles.css" rel="stylesheet"/>

    <style type="text/css">

    </style>
    <!-- Le HTML5 shim, for IE6-8 support of HTML5 elements -->
    <!--[if lt IE 9]>
      <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
    <![endif]-->
    <script type="text/javascript" src="http://code.jquery.com/jquery-1.9.0.min.js"></script>
    <script type="text/javascript" src="assets/js/kezcommon.js"></script>
    <script type="text/javascript">

        $(document).ready
    (
        function () {

            createAutoClosingAlert('.success_alert', 6000);
        }
    );

        function createAutoClosingAlert(selector, delay) {
            var alert = $(selector).alert();
            window.setTimeout(function () { $(alert).slideUp() }, delay);
        }

</script>  

    <asp:ContentPlaceHolder ID="head" runat="server">
    </asp:ContentPlaceHolder>
</head>
<body>
    <form id="form1" runat="server">

    <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true">
    </asp:ScriptManager>
           <div class="navbar navbar-inverse navbar-fixed-top">
      <div class="navbar-inner">
        <div class="container">
          <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </a>
          <a class="brand" href="default.aspx">KezBlu</a>
          <div class="nav-collapse collapse">
            <ul class="nav">

<asp:Repeater runat="server" id="MenuRepeater">
  <headertemplate>

  </headertemplate>
  <itemtemplate>
     <%# Eval("Content") %>
  </itemtemplate>
  <footertemplate>

  </footertemplate>
 </asp:Repeater>

              </ul>
             <div id="auth">
                 <asp:HyperLink id="lnkSignIn" runat="server">Sign In</asp:HyperLink>
                 <br />
                 <asp:LinkButton ID="lnkSignOut" runat="server" onclick="lnkSignOut_Click">Sign Out</asp:LinkButton>

             </div>

          </div><!--/.nav-collapse -->
        </div>
      </div>
    </div>


    <div id="wrap">
       <div id="content">
           <div id="alerts">
               <div class="bs-docs-example">
              <div runat="server"  id="success_alert" class="success_alert alert alert-success fade in">
                <button type="button" class="close" data-dismiss="alert">&times;</button>
                   <div runat="server" id="success_alert_text">
                </div>
              </div>
             </div>
              <div class="bs-docs-example">
              <div runat="server" id="error_alert" class="error_alert alert alert-error fade in">
                <button type="button" class="close" data-dismiss="alert">&times;</button>
                <div runat="server" id="error_alert_text">
                </div>
              </div>
             </div>
            </div>
       <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">

       </asp:ContentPlaceHolder>
       </div>


    </div>
    </form>
      <!-- Le javascript
    ================================================== -->
    <!-- Placed at the end of the document so the pages load faster -->

    <script type="text/javascript" src="assets/js/bootstrap.min.js"></script>
</body>
</html>
4

1 回答 1

0

我相信您缺少用户控件中公开公开 UpdateMode 属性和内部 UpdatePanel 控件的 Update 方法的代码。您需要这样做，以便外部源可以显式刷新用户控件的内容。您需要以下内容：

public UpdatePanelUpdateMode UpdateMode
{
    get { return this.UpdatePanel1.UpdateMode; }
    set { this.UpdatePanel1.UpdateMode = value; }
}

public void Update()
{
    this.UpdatePanel1.Update();
}

您现在可以将用户控件添加到您的 .aspx 页面并以声明方式设置内部 UpdatePanel 控件的 UpdateMode 属性：

<div>
    <uc1:ProjectView ID="ProjectView1" runat="server" UpdateMode="Conditional" />
</div>

这个过程在以下文档中有很好的解释：

将 ASP.NET UpdatePanel 控件与用户控件一起使用

于 2013-02-20T20:56:42.507 回答