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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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Comment
Question by:mathieu_cupryk
  • 5
  • 4
9 Comments
 
LVL 16

Expert Comment

by:burakiewicz
Comment Utility
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
Comment Utility
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
Comment Utility
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
Comment Utility
I tried everything. Can u try?
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LVL 16

Expert Comment

by:burakiewicz
Comment Utility
yeah give me a minute to set it up
0
 
LVL 16

Expert Comment

by:burakiewicz
Comment Utility
i copied and pasted your aspx and cs and mine works
0
 

Author Comment

by:mathieu_cupryk
Comment Utility
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
Comment Utility
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
Comment Utility
super job!!!
Excellent work.
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