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Ajax Update Panel with Control outside the panel.

Posted on 2009-04-14
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Last Modified: 2012-05-06
I have a treeview on the left side of my master page I need when I click the node I need to trigger the following( this is an example of a button control semi working):
div id="dvContent" style="overflow: auto;">
               
                    <asp:ScriptManager ID="scriptMgr" runat="server" />
                   
                     <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Generate random names"
                                    Width="200px" />
                               
                   
                    <asp:UpdatePanel ID="updatePnl" runat="server">
                        <ContentTemplate>
                            <fieldset>
                                <legend>Panel with random names</legend>
                                <br />
                                <br />
                                <div style="height: 35px; padding-top: 5px; padding-bottom: 5px">
                                    <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updatePnl"
                                        DisplayAfter="100" DynamicLayout="true">
                                        <ProgressTemplate>
                                            <img border="0" src="../Images/loading.gif"/>
                                        </ProgressTemplate>
                                       
                                    </asp:UpdateProgress>
                                </div>
                                <asp:Label Font-Bold="true" ID="lblNames" runat="server" Text="">
                                </asp:Label>
                                <br />
                            </fieldset>
                        </ContentTemplate>
                    </asp:UpdatePanel>
                </div>


using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;
 

namespace SIDWebClient.Secure

{

    public partial class Welcome : SIDWebClientBasePage

    {

        protected void Page_Load(object sender, EventArgs e)

        {
 

            scriptMgr.RegisterAsyncPostBackControl(Button1);
 

            if (!Page.IsPostBack)

            {

                //Button btn1 = (Button)Page.FindControl("Button1");

                System.Web.UI.WebControls.Button btn1 = FindControl<System.Web.UI.WebControls.Button>(this, "Button1");

                ScriptManager scriptManager = ScriptManager.GetCurrent(this);

                scriptManager.RegisterPostBackControl(btn1);

            }

            else

            {

                //Response.Write(LeftNavTree.SelectedNode.Value);

            }

        }
 

        private readonly string[] NAMES = new string[] { 

            "Mark", "Tom", "Harry", "Sally", "Sandra", "Paul", "Anastasia" };
 

        /// <summary>

        /// This task is running 3 seconds

        /// </summary>

        private void FillListBoxRandom()

        {

            lblNames.Text = "";
 

            List<String> names = new List<string>();
 

            int count = NAMES.Length;
 

            for (int i = 1; i < 30; i++)

            {

                System.Threading.Thread.Sleep(100);

                Random rnd = new Random();

                int number = rnd.Next(count);

                string selName = NAMES[number];

                if (!names.Contains(selName))

                {

                    names.Add(selName);

                }

            }
 

            foreach (string name in names)

                lblNames.Text += name + "<BR />";
 

        }

        protected void Button1_Click(object sender, EventArgs e)

        {

            FillListBoxRandom();

        }
 
 

        public T FindControl<T>(string id) where T : Control

        {

            return FindControl<T>(Page, id);

        }
 

        public static T FindControl<T>(Control startingControl, string id) where T : Control

        {

            T found = null;

            foreach (Control activeControl in startingControl.Controls)

            {

                found = activeControl as T;

                if (found == null)

                {

                    found = FindControl<T>(activeControl, id);

                }

                else if (string.Compare(id, found.ID, true) != 0)

                {

                    found = null;

                }

                if (found != null)

                {

                    break;

                }

            }

            return found;

        }
 
 

    }

}

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Question by:mathieu_cupryk
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9 Comments
 
LVL 16

Expert Comment

by:burakiewicz
ID: 24152372
add this before the content template of the update panel
<Triggers>

<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />

</Triggers>

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Author Comment

by:mathieu_cupryk
ID: 24157396
I tried this but it does no show the loading gif.
I have attached my code.
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.UI.MobileControls;
using System.Collections.Generic;

public partial class _Default : System.Web.UI.Page
{

      private readonly string[] NAMES = new string[] {
            "Mark", "Tom", "Harry", "Sally", "Sandra", "Paul", "Anastasia" };

      /// <summary>
      /// This task is running 3 seconds
      /// </summary>
      private void FillListBoxRandom()
      {
            lblNames.Text = "";

            List<String> names = new List<string>();

            int count = NAMES.Length;

            for (int i = 1; i < 30; i++)
            {
                  System.Threading.Thread.Sleep( 100 );
                  Random rnd = new Random();
                  int number = rnd.Next(count);
                  string selName = NAMES[number];
                  if (!names.Contains(selName))
                  {
                        names.Add(selName);
                  }
            }

            foreach( string name in names )
                  lblNames.Text += name + "<BR />";
      
      }
      protected void Button1_Click(object sender, EventArgs e)
      {
            FillListBoxRandom();
      }
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" 

"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title>AjaxUpdatePanelTest</title>

    <style type="text/css">

        #updatePnl

        {

            width: 250px;

            text-align: center;

            padding: 5px;

        }

    </style>

</head>

<body style="font-size: small; font-family: Arial">

    <form id="form1" runat="server">

    <!-- You need to add this ScriptManager -->

    <asp:ScriptManager ID="scriptMgr" runat="server" />

    <div>

        This example demonstrates the benefits of an UpdatePanel.

    </div>

    <br />

    <br />

    <!-- Only this area is updated on PostBack -->

    <asp:UpdatePanel ID="updatePnl" runat="server">

        <Triggers>

            <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />

        </Triggers>

        <ContentTemplate>

            <fieldset>

                <legend>Panel with random names</legend>

                <br />

                <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Generate random names"

                    Width="200px" />

                <br />

                <div style="height: 35px; padding-top: 5px; padding-bottom: 5px">

                    <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updatePnl"

                        DisplayAfter="100" DynamicLayout="true">

                        <ProgressTemplate>

                            <img border="0" src="img/loading.gif" />

                        </ProgressTemplate>

                    </asp:UpdateProgress>

                </div>

                <asp:Label Font-Bold="true" ID="lblNames" runat="server" Text="">

                </asp:Label>

                <br />

            </fieldset>

        </ContentTemplate>

    </asp:UpdatePanel>

    </form>

</body>

</html>

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loading.gif
0
 
LVL 16

Expert Comment

by:burakiewicz
ID: 24167540
try something that takes more than 3 seconds, it might not be long enough to display the please wait.  Also, try it with the update progress outside of the update panel
0
 

Author Comment

by:mathieu_cupryk
ID: 24167711
I tried everything. Can u try?
0
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More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

 
LVL 16

Expert Comment

by:burakiewicz
ID: 24167767
yeah give me a minute to set it up
0
 
LVL 16

Expert Comment

by:burakiewicz
ID: 24167835
i copied and pasted your aspx and cs and mine works
0
 

Author Comment

by:mathieu_cupryk
ID: 24167853
if the button is out side
               <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Generate random names"
                    Width="200px" />

                    <asp:ScriptManager ID="scriptMgr" runat="server" />
                   
                     <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Generate random names"
                                    Width="200px" />
                               
                   
                    <asp:UpdatePanel ID="updatePnl" runat="server">
                        <ContentTemplate>
                            <fieldset>
                                <legend>Panel with random names</legend>
                                <br />
                                <br />
                                <div style="height: 35px; padding-top: 5px; padding-bottom: 5px">
                                    <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updatePnl"
                                        DisplayAfter="100" DynamicLayout="true">
                                        <ProgressTemplate>
                                            <img border="0" src="../Images/loading.gif"/>
                                        </ProgressTemplate>
                                       
                                    </asp:UpdateProgress>
                                </div>
                                <asp:Label Font-Bold="true" ID="lblNames" runat="server" Text="">
                                </asp:Label>
                                <br />
                            </fieldset>
                        </ContentTemplate>
                    </asp:UpdatePanel>
                </div>
See at the top.
0
 
LVL 16

Accepted Solution

by:
burakiewicz earned 500 total points
ID: 24170699
i found out what you can do for this to work
by adding this after the html for your scriptmanager . see attached code
<script type="text/javascript">
    var prm = Sys.WebForms.PageRequestManager.getInstance();
    prm.add_initializeRequest(InitializeRequest);
    prm.add_endRequest(EndRequest);
    var postBackElement;
    function InitializeRequest(sender, args) {
        if (prm.get_isInAsyncPostBack())
            args.set_cancel(true);
        postBackElement = args.get_postBackElement();

        if (postBackElement.id == 'Button1')
            $get('UpdateProgress1').style.display = 'block';
    }
    function EndRequest(sender, args) {
        if (postBackElement.id == 'Button1')
            $get('UpdateProgress1').style.display = 'none';
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

    <title></title>

</head>
 

<body>

    <form id="form1" runat="server">

                   <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Generate random names"

                    Width="200px" />
 

                    <asp:ScriptManager ID="scriptMgr" runat="server" />

                   

                                <asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="updatePnl"

                                        >

                                        

                                        <ProgressTemplate>

                                        

                                            <img border="0" src="../Images/loading.gif"/>

                                        </ProgressTemplate>

                                       

                                    </asp:UpdateProgress>

                   

                    <asp:UpdatePanel ID="updatePnl" runat="server">

                    <Triggers>

                        <asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />

                    

                    </Triggers>

                        <ContentTemplate>

                            <fieldset>

                                <legend>Panel with random names</legend>

                                <br />

                                <br />

                                <div style="height: 35px; padding-top: 5px; padding-bottom: 5px">

                                 

                                </div>

                                <asp:Label Font-Bold="true" ID="lblNames" runat="server" Text="">

                                </asp:Label>

                                <br />

                            </fieldset>

                        </ContentTemplate>

                    </asp:UpdatePanel>

                </div>

    </form>

</body>

<script type="text/javascript">

    var prm = Sys.WebForms.PageRequestManager.getInstance();

    prm.add_initializeRequest(InitializeRequest);

    prm.add_endRequest(EndRequest);

    var postBackElement;

    function InitializeRequest(sender, args) {

        if (prm.get_isInAsyncPostBack())

            args.set_cancel(true);

        postBackElement = args.get_postBackElement();
 

        if (postBackElement.id == 'Button1')

            $get('UpdateProgress1').style.display = 'block';

    }

    function EndRequest(sender, args) {

        if (postBackElement.id == 'Button1')

            $get('UpdateProgress1').style.display = 'none';

    }

</script>

</html>

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Author Comment

by:mathieu_cupryk
ID: 24172257
super job!!!
Excellent work.
0

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