Question

Refresh UpdatePanel via JavaScript cause a full postback

Asked by: andre72

Hi,

at my side I use a UpdatePanel and a TreeView.
The links of the TreeView are just JavaScript calls I add to programmatically when the page is load, eg.: root.NavigateUrl = "javascript:UpdPanelUpdate('" + id + "');";

The UpdatePanel looks like this:
<asp:UpdatePanel ID="UpdatePanel0" runat="server" OnLoad="UpdatePanel0_Load">

I found that sample to just refresh the UpdatePanel using JavaScript somewhere in the net:
function UpdPanelUpdate(id) {
__doPostBack("<%= UpdatePanel0.ClientID %>", id);
}

But when the JavaScript is executed from a click of the TreeView there'll ever be a full page callback.

Any idea what I do wrong?

Thanks,

Andre

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Asked On: 2009-08-18 at 05:59:22ID24661199
Tags: ASP
,; NET
,; C#
,; JavaScript
,; AJAX
Topics: Programming for ASP.NET
,; JavaScript
,; Asynchronous Javascript and XML (AJAX)
Participating Experts: 3
Points: 500
Comments: 27

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Answers

by: davrob60Posted on 2009-08-18 at 06:33:19ID: 25122988

that code is to cause a full postback,

here a solution

http://codeclimber.net.nz/archive/2007/06/26/how-to-refresh-an-updatepanel-from-javascript.aspx

The idea is to use another control that have async trigger (the control is hidden using style="display:none;") ,

Then use javascript to "push" that trigger.

by: paololabePosted on 2009-08-18 at 07:13:23ID: 25123409

If you are executing that javascript in a click then you could add a server control, ie:
<asp:LinkButton id="MYLINK" runat="server" click="MYLINK_Click">link</asp:LinkButton>
and put it inside the update panel or add it as a trigger for the update panel.
on every click the updatepanel will reload, if you want you coul also add the code to update the tree in the click event handler.

by: andre72Posted on 2009-08-18 at 07:20:14ID: 25123500

Are you really it happens because of the UpdatePanel?
When I use davrob60 link I get also a full page postback.

Maybe because of the TreeView?

by: davrob60Posted on 2009-08-18 at 07:22:58ID: 25123536

a click of the TreeView

dos the treeview is instde the update panel.

and Why you just dont add the treeview as a Asyncpostbacktrigger of the updatepanel, you wont need any javascript...

by: davrob60Posted on 2009-08-18 at 07:37:45ID: 25123695

ok, i think i missundwerstood what you are tring to do

first forget about that javascript thing.

then, add a the tree view as a asynkpostpacktrigger of your upadat panel

finally, use the selectednodechanged event of the treeview to do your stuff. you will be able to use the .SelectedNode proprety to know witch node was clicked.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.treeview.selectednodechanged.aspx

by: vazglPosted on 2009-08-18 at 07:43:17ID: 25123756

Hi

Try postback on one of the triggers of the update panel instead of the update panel.

by: paololabePosted on 2009-08-18 at 08:34:06ID: 25124311

check the code attached, contains a little example of an updatepanel with a dynamic treeview
remember to add the required section on web.config to enable ajax features

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
 
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI" TagPrefix="asp" %>
 
<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">LinkButton</asp:LinkButton>
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" ScriptMode="Auto">
        </asp:ScriptManager>
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional" RenderMode="Inline">
            <ContentTemplate>
                
                
                <asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
                <asp:TreeView ID="TreeView1" runat="server">
                </asp:TreeView>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="LinkButton1" EventName="Click" />
            </Triggers>
            
        </asp:UpdatePanel>
       
       </div>
    </form>
</body>
</html>
 
 
------------------------ code behind -----------------------
 
 
Partial Class _Default
    Inherits System.Web.UI.Page
 
  
    Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        TreeView1.Nodes.Add(New TreeNode("Ciao"))
        LinkButton1.Text = DateTime.Now
 
    End Sub
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        If Not IsPostBack Then Response.Write(DateTime.Now)
 
    End Sub
End Class

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by: andre72Posted on 2009-08-18 at 12:16:12ID: 25126523

Thanks paololabe but this is not what I need.
My TreeView is outside the update panel and when a node is selected it should give an ID to the updatepanel, the panel get data from a db and fill the inputfields.

I'll have a look now for the hints here and when it wouldn't work I'll post the source.

by: davrob60Posted on 2009-08-18 at 12:20:30ID: 25126567

Has i said, you could use the selectednodechanged event and treeview.SelectedNode.id.

if your treeview is set has a asyncPostbackTrigger, then you will bw able to perform your update without the full postback.

by: andre72Posted on 2009-08-18 at 23:43:37ID: 25130085

Yes davrob60 I mean your idea to give it a try.

I added a trigger to the updatepanel:
<Triggers>
<asp:AsyncPostBackTrigger ControlID="TreeView1" />
</Triggers>

and also with EventName="SelectedNodeChanged".

When I add nothing to NavigateUrl I get a full postback.
When I add "javascript: return false;" I get a JS error: return outside a functionen ?!?!
When I add "#" there'll be no event that fires, no postback and no SelectedNodeChanged.

by: paololabePosted on 2009-08-19 at 02:56:03ID: 25130947

I'm sorry, no problem, see the attached code.
I think that the problem is that you're using navigateurl, use selectednodechanged events and update the control panel
As said by the other expert you ahve to include treeview in trigger list.

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>
 
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI" TagPrefix="asp" %>
 
<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        
    <div>
        <asp:TreeView ID="TreeView1" runat="server">
        <Nodes>
        <asp:TreeNode Text="link1" Value="link1"></asp:TreeNode>
            <asp:TreeNode Text="link2" Value="link2"></asp:TreeNode>
        </Nodes>
        </asp:TreeView>
        <asp:ScriptManager ID="ScriptManager1" runat="server" ScriptMode="Auto">
        </asp:ScriptManager>
        &nbsp;
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" RenderMode="Inline" UpdateMode="Conditional">
            <ContentTemplate>
                <asp:Label Text="Label" ID="Label2" runat="server"></asp:Label>
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="TreeView1" EventName="SelectedNodeChanged" />
            </Triggers>
            
        </asp:UpdatePanel>
       
       </div>
    </form>
</body>
</html>
 
------ code behind ------
 
 
Partial Class _Default
    Inherits System.Web.UI.Page
 
  
    Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
        TreeView1.Nodes.Add(New TreeNode("Ciao"))
        'LinkButton1.Text = DateTime.Now
 
    End Sub
 
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
 
        If Not IsPostBack Then Response.Write(DateTime.Now)
 
    End Sub
 
    Protected Sub TreeView1_SelectedNodeChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TreeView1.SelectedNodeChanged
        Label2.Text = TreeView1.SelectedNode.Value
 
    End Sub
End Class

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by: davrob60Posted on 2009-08-19 at 05:44:04ID: 25131930

When I add nothing to NavigateUrl I get a full postback.

Humm, this is not normal. if paololabe`s comment dose not help, could you send us some code we could look at?

by: andre72Posted on 2009-08-19 at 06:36:14ID: 25132412

I'm sorry about I can't make it work.
So I do what you suggest ...

tvwFramework1_SelectedNodeChanged will never fired but ever the full postback.
Thanks for your suppoert

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
    CodeFile="Default.aspx.cs" Inherits="_Default" %>
 
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <table border="0" cellpadding="0" cellspacing="0" style="width: 100%; height: 100%;
        border: solid 1px #6699CC;">
        <tr style="height: 200px;">
            <td runat="server" id="tdTree1" style="width: 20%; height: 100%;" align="left" valign="top">
                <div runat="server" id="divTree1" style="width: 20%; height: 100%; overflow: auto;
                    padding: 0px; margin: 0px; bottom: 0;">
                    <asp:TreeView ID="tvwFramework1" runat="server" ShowLines="True" Style="width: 100%;
                        height: 100%; padding: 0px; margin: 0px;">
                        <Nodes>
                            <asp:TreeNode Text=".NET Framework" Value=".NET Framework">
                                <asp:TreeNode Text="System.Diagnostics" Value="System.Diagnostics">
                                    <asp:TreeNode Text="Debug Class" Value="Debug"></asp:TreeNode>
                                    <asp:TreeNode Text="DebuggableAttribute.DebuggingModes Enumeration" Value="DebuggableAttribute.DebuggingModes Enumeration">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="EventLogPermissionEntryCollection Class" Value="EventLogPermissionEntryCollection Class">
                                    </asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.IO" Value="System.IO">
                                    <asp:TreeNode Text="File Class" Value="File Class"></asp:TreeNode>
                                    <asp:TreeNode Text="FileInfo Class" Value="FileInfo Class"></asp:TreeNode>
                                    <asp:TreeNode Text="InternalBufferOverflowException Class" Value="InternalBufferOverflowException Class">
                                    </asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web.UI.WebControls" Value="ASP.NET">
                                    <asp:TreeNode Text="CheckBoxList Class" Value="CheckBoxList"></asp:TreeNode>
                                    <asp:TreeNode Text="Content Class" Value="Content"></asp:TreeNode>
                                    <asp:TreeNode Text="ContentPlaceHolder Class" Value="ContentPlaceHolder"></asp:TreeNode>
                                    <asp:TreeNode Text="Label Class" Value="Label"></asp:TreeNode>
                                    <asp:TreeNode Text="TextBox Class" Value="TextBox"></asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web" Value="System.Web">
                                    <asp:TreeNode Text="HttpRequest Class" Value="HttpRequest Class"></asp:TreeNode>
                                    <asp:TreeNode Text="HttpWorkerRequest Class" Value="HttpWorkerRequest Class"></asp:TreeNode>
                                    <asp:TreeNode Text="HttpWorkerRequest.EndOfSendNotification Delegate" Value="HttpWorkerRequest.EndOfSendNotification Delegate">
                                    </asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web.Caching" Value="System.Web.Caching">
                                    <asp:TreeNode Text="AggregateCacheDependency Class" Value="AggregateCacheDependency Class">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="DatabaseNotEnabledForNotificationException Class" Value="DatabaseNotEnabledForNotificationException Class">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="SqlCacheDependency Class" Value="SqlCacheDependency Class"></asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web.UI.MobileControls" Value="System.Web.UI.MobileControls">
                                    <asp:TreeNode Text="DeviceSpecific Class" Value="DeviceSpecific Class"></asp:TreeNode>
                                    <asp:TreeNode Text="LiteralTextContainerControlBuilder Class" Value="LiteralTextContainerControlBuilder Class">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="ObjectListShowCommandsEventHandler Delegate" Value="ObjectListShowCommandsEventHandler Delegate">
                                    </asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web.UI.MobileControls.Adapters" Value="System.Web.UI.MobileControls.Adapters">
                                    <asp:TreeNode Text="HtmlAdapter Class" Value="HtmlAdapter Class"></asp:TreeNode>
                                    <asp:TreeNode Text="HtmlPanelAdapter Class" Value="HtmlPanelAdapter Class"></asp:TreeNode>
                                    <asp:TreeNode Text="WmlControlAdapter Class" Value="WmlControlAdapter Class"></asp:TreeNode>
                                </asp:TreeNode>
                                <asp:TreeNode Text="System.Web.UI.MobileControls.Adapters.XhtmlAdapters" Value="System.Web.UI.MobileControls.Adapters.XhtmlAdapters">
                                    <asp:TreeNode Text="XhtmlCalendarAdapter Class " Value="XhtmlCalendarAdapter Class ">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="XhtmlCommandAdapter Class" Value="XhtmlCommandAdapter Class">
                                    </asp:TreeNode>
                                    <asp:TreeNode Text="XhtmlFormAdapter Class" Value="XhtmlFormAdapter Class"></asp:TreeNode>
                                </asp:TreeNode>
                            </asp:TreeNode>
                        </Nodes>
                    </asp:TreeView>
                </div>
            </td>
            <td id="tdMid1" style="height: 100%; width: 6px; background-color: Scrollbar;">
            </td>
            <td id="tdEdit1" align="left" valign="top" style="height: 100%; padding-left: 6px;">
                &nbsp;<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0">
                    <cc1:TabPanel runat="server" HeaderText="Tab1" ID="TabPanel1">
                        <ContentTemplate>
                            <asp:UpdatePanel ID="UpdatePanel1" runat="server" RenderMode="Inline" UpdateMode="Conditional">
                                <ContentTemplate>
                                    <asp:Label Text="Label" ID="Label2" runat="server"></asp:Label>
                                </ContentTemplate>
                                <Triggers>
                                    <asp:AsyncPostBackTrigger ControlID="tvwFramework1" EventName="SelectedNodeChanged" />
                                </Triggers>
                            </asp:UpdatePanel>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Tab2" ID="TabPanel2">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Tab3" ID="TabPanel3">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                </cc1:TabContainer>
            </td>
        </tr>
    </table>
</asp:Content>
 
------ code behind ------
 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
 
public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
 
    }
 
    protected void tvwFramework1_SelectedNodeChanged(Object sender, System.EventArgs e)
    {
        Label2.Text = DateTime.Now.ToString();
    }
}

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by: davrob60Posted on 2009-08-19 at 06:39:08ID: 25132446

ha! ther is a tab container!

If you put the update panel out of the tab container, does it work???

by: andre72Posted on 2009-08-19 at 06:58:45ID: 25132673

No, the behaviour is the same like inside the tabs ...

by: davrob60Posted on 2009-08-19 at 07:02:19ID: 25132702

ok, try with 2 update panels

http://stackoverflow.com/questions/490682/communicate-between-updatepanels-asp-net

by: davrob60Posted on 2009-08-19 at 07:09:25ID: 25132790

FYI I also found this :

http://msdn.microsoft.com/en-us/library/e8z5184w.aspx

abstract :

Using the TreeView Control with UpdatePanel Controls

UpdatePanel controls are used to update selected regions of a page instead of updating the whole page with a postback. The TreeView control can be used inside an UpdatePanel control with the following restrictions:
TreeView callbacks must be associated with asynchronous postbacks, or callback event validation will fail. When you set the PopulateOnDemand property of the TreeNode controls to true, callbacks are enabled. You can use one of the following approaches to ensure that TreeView callbacks work with the UpdatePanel control:

If the TreeView control is not inside an UpdatePanel control, disable callbacks on TreeNode controls that are not part of an asynchronous postback. To do this, set the PopulateOnDemand property to false.
Programmatically refresh all controls that register callbacks during the asynchronous postback. For example, you can place the TreeView control inside an UpdatePanel control. The TreeView control does not have to be in the UpdatePanel control where the asynchronous postback originates, as long as the UpdatePanel control that contains the TreeView control is refreshed.

You must apply styles by using a reference to a Cascading Style Sheet (CSS) class. For example, instead of setting the NodeStyle property by using a property-subproperty attribute, set the style by using the property-CssClass attribute. Similarly, when you use the NodeStyle template to set the style, use the CssClass attribute of the template.
The EnableClientScript property must be true (the default value). In addition, if callbacks are enabled for the TreeView control, you cannot change the EnableClientScript property between asynchronous postbacks.

by: andre72Posted on 2009-08-19 at 07:14:19ID: 25132855

The same ...
It seems that the TreeView is really strange ...

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true"
    CodeFile="Default.aspx.cs" Inherits="_Default" %>
 
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="cc1" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="Server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="Server">
    <table border="0" cellpadding="0" cellspacing="0" style="width: 100%; height: 100%;
        border: solid 1px #6699CC;">
        <tr style="height: 200px;">
            <td runat="server" id="tdTree1" style="width: 20%; height: 100%;" align="left" valign="top">
                <div runat="server" id="divTree1" style="width: 20%; height: 100%; overflow: auto;
                    padding: 0px; margin: 0px; bottom: 0;">
                    <asp:UpdatePanel ID="UpdatePanel2" runat="server">
                        <ContentTemplate>
                            <asp:TreeView ID="tvwFramework1" runat="server" ShowLines="True" Style="width: 100%;
                                height: 100%; padding: 0px; margin: 0px;">
                                <Nodes>
                                    <asp:TreeNode Text=".NET Framework" Value=".NET Framework">
                                        <asp:TreeNode Text="System.Diagnostics" Value="System.Diagnostics">
                                            <asp:TreeNode Text="Debug Class" Value="Debug"></asp:TreeNode>
                                            <asp:TreeNode Text="DebuggableAttribute.DebuggingModes Enumeration" Value="DebuggableAttribute.DebuggingModes Enumeration">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="EventLogPermissionEntryCollection Class" Value="EventLogPermissionEntryCollection Class">
                                            </asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.IO" Value="System.IO">
                                            <asp:TreeNode Text="File Class" Value="File Class"></asp:TreeNode>
                                            <asp:TreeNode Text="FileInfo Class" Value="FileInfo Class"></asp:TreeNode>
                                            <asp:TreeNode Text="InternalBufferOverflowException Class" Value="InternalBufferOverflowException Class">
                                            </asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web.UI.WebControls" Value="ASP.NET">
                                            <asp:TreeNode Text="CheckBoxList Class" Value="CheckBoxList"></asp:TreeNode>
                                            <asp:TreeNode Text="Content Class" Value="Content"></asp:TreeNode>
                                            <asp:TreeNode Text="ContentPlaceHolder Class" Value="ContentPlaceHolder"></asp:TreeNode>
                                            <asp:TreeNode Text="Label Class" Value="Label"></asp:TreeNode>
                                            <asp:TreeNode Text="TextBox Class" Value="TextBox"></asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web" Value="System.Web">
                                            <asp:TreeNode Text="HttpRequest Class" Value="HttpRequest Class"></asp:TreeNode>
                                            <asp:TreeNode Text="HttpWorkerRequest Class" Value="HttpWorkerRequest Class"></asp:TreeNode>
                                            <asp:TreeNode Text="HttpWorkerRequest.EndOfSendNotification Delegate" Value="HttpWorkerRequest.EndOfSendNotification Delegate">
                                            </asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web.Caching" Value="System.Web.Caching">
                                            <asp:TreeNode Text="AggregateCacheDependency Class" Value="AggregateCacheDependency Class">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="DatabaseNotEnabledForNotificationException Class" Value="DatabaseNotEnabledForNotificationException Class">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="SqlCacheDependency Class" Value="SqlCacheDependency Class"></asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web.UI.MobileControls" Value="System.Web.UI.MobileControls">
                                            <asp:TreeNode Text="DeviceSpecific Class" Value="DeviceSpecific Class"></asp:TreeNode>
                                            <asp:TreeNode Text="LiteralTextContainerControlBuilder Class" Value="LiteralTextContainerControlBuilder Class">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="ObjectListShowCommandsEventHandler Delegate" Value="ObjectListShowCommandsEventHandler Delegate">
                                            </asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web.UI.MobileControls.Adapters" Value="System.Web.UI.MobileControls.Adapters">
                                            <asp:TreeNode Text="HtmlAdapter Class" Value="HtmlAdapter Class"></asp:TreeNode>
                                            <asp:TreeNode Text="HtmlPanelAdapter Class" Value="HtmlPanelAdapter Class"></asp:TreeNode>
                                            <asp:TreeNode Text="WmlControlAdapter Class" Value="WmlControlAdapter Class"></asp:TreeNode>
                                        </asp:TreeNode>
                                        <asp:TreeNode Text="System.Web.UI.MobileControls.Adapters.XhtmlAdapters" Value="System.Web.UI.MobileControls.Adapters.XhtmlAdapters">
                                            <asp:TreeNode Text="XhtmlCalendarAdapter Class " Value="XhtmlCalendarAdapter Class ">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="XhtmlCommandAdapter Class" Value="XhtmlCommandAdapter Class">
                                            </asp:TreeNode>
                                            <asp:TreeNode Text="XhtmlFormAdapter Class" Value="XhtmlFormAdapter Class"></asp:TreeNode>
                                        </asp:TreeNode>
                                    </asp:TreeNode>
                                </Nodes>
                            </asp:TreeView>
                        </ContentTemplate>
                    </asp:UpdatePanel>
                </div>
            </td>
            <td id="tdMid1" style="height: 100%; width: 6px; background-color: Scrollbar;">
            </td>
            <td id="tdEdit1" align="left" valign="top" style="height: 100%; padding-left: 6px;">
                <asp:UpdatePanel ID="UpdatePanel1" runat="server">
                    <ContentTemplate>
                        <asp:Label Text="Label" ID="Label2" runat="server"></asp:Label>
                    </ContentTemplate>
                    <Triggers>
                        <asp:AsyncPostBackTrigger ControlID="tvwFramework1" EventName="SelectedNodeChanged" />
                    </Triggers>
                </asp:UpdatePanel>
                &nbsp;<cc1:TabContainer ID="TabContainer1" runat="server" ActiveTabIndex="0">
                    <cc1:TabPanel runat="server" HeaderText="Übersicht" ID="TabPanel1">
                        <HeaderTemplate>
                            Übersicht
                        </HeaderTemplate>
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Eingabe" ID="TabPanel2">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Kommentare" ID="TabPanel3">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Sonderartikel" ID="TabPanel4">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Rabattierung" ID="TabPanel5">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                    <cc1:TabPanel runat="server" HeaderText="Optionen" ID="TabPanel6">
                        <ContentTemplate>
                        </ContentTemplate>
                    </cc1:TabPanel>
                </cc1:TabContainer>
            </td>
        </tr>
    </table>
</asp:Content>

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Select all Open in new window

by: davrob60Posted on 2009-08-19 at 07:23:27ID: 25132980

humm, i`m clueless

The only thing i see is that thing

Style="width: 100%; height: 100%; padding: 0px; margin: 0px;"

and the MSDN article said

You must apply styles by using a reference to a Cascading Style Sheet (CSS) class. For example, instead of setting the NodeStyle property by using a property-subproperty attribute, set the style by using the property-CssClass attribute. Similarly, when you use the NodeStyle template to set the style, use the CssClass attribute of the template.

So, I dont see why it will change anything (voodoo programming, great!), but since Microsoft tell it, what append if you remove the Style property? (and also the ShowLines="True" while we are there)

by: andre72Posted on 2009-08-19 at 07:34:31ID: 25133126

What is a little bit funny: When I set PopulateOnDemand="false" EnableClientScript="true" like is described in the article, I get also a full postback ...

davrob60 I'm sorry, I'm not sure it I understand right what to do with the CSS.
Is the meaning like that:
<asp:TreeView ID="tvwFramework1" runat="server" ShowLines="True" Style="width: 100%;
height: 100%; padding: 0px; margin: 0px;" PopulateOnDemand="false" EnableClientScript="true">

This is also already used in the source.
But I can't really understand that are so many hints don't work in my case ...

by: davrob60Posted on 2009-08-19 at 07:38:27ID: 25133188

i was telling about this:

<asp:TreeView ID="tvwFramework1" runat="server" ShowLines="True" Style="width: 100%; height: 100%; padding: 0px; margin: 0px;" >

so let just try this:

<asp:TreeView ID="tvwFramework1" runat="server" >

by: paololabePosted on 2009-08-19 at 07:41:44ID: 25133226

I've just paste your code and it works for me, i've just added the code attached
no need to use a second update panel

protected void Page_Load(object
sender, EventArgs e) {
    
        tvwFramework1.SelectedNodeChanged+=new EventHandler(tvwFramework1_SelectedNodeChanged);
    
    }

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Select all Open in new window

by: andre72Posted on 2009-08-19 at 07:51:08ID: 25133338

I agree that is the solution for SelectedNodeChanged.
And you get the Page_Load only once?
I get it with every hit at a node.

by: davrob60Posted on 2009-08-19 at 07:51:26ID: 25133344

nice catch paololabe!

I think you could do the same as paololabe from load by setting the onselectednodechanged property.

<asp:TreeView ID="tvwFramework1" runat="server"             onselectednodechanged="tvwFramework1_SelectedNodeChanged">

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Select all Open in new window

by: paololabePosted on 2009-08-19 at 08:13:08ID: 25133639

>And you get the Page_Load only once?
Page_load will be called for every postback also during a partial rendering, this is by design.
try for example
if(!IsPostBack) tvwFramework1.SelectedNodeChanged+=new EventHandler(tvwFramework1_SelectedNodeChanged);
the event handler will not be callet at all.

by: andre72Posted on 2009-08-19 at 08:39:25ID: 25133989

Sorry, I was a little bit confused for sure you ask with Page.IsPostBack because of a PostBack occurs.
I hope you agree with 50% for the hint with the trigger and 50% for the missing SelectedNodeChanged.

Thanks a lot!

by: andre72Posted on 2009-08-19 at 08:40:41ID: 31617023

Thanks

20120131-EE-VQP-002

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