.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
Gaurav Pal
Post New Web Links

Stop panel from repainting

Posted By:      Posted Date: October 22, 2010    Points: 0   Category :Windows Application
Hi, i am learning Visual C# with Visual C# Express and i have a little problem.... i have a panel with accordion control in it that i made it, the panel AutoScroll property is set to true,

the problem is that in the moment of showing and hiding elements in the accordion (which is done in one method so no latency can happen between showing and hiding) the panel repaints itself and i have a little bit of flickering in the panel and the panels scroll bar so i was wondering, is there anything i can do to stop the panel from repaining untill i show/hide elements in the accordion and then enable repaining again?  Or is there any other solution?

Thanks in advance.

View Complete Post

More Related Resource Links

How to stop Horizontal Scroll bar on Panel?


I have a panel on a pretty basic C# page.  I've set the height, and width, and set thescrollbars = "Vertical".  However, on some pages, the panel adds a horizonal scroll bar.  It seems very random, and I can't figure out why or how to prevent the panel from adding horizontal scroll bars.   The content in the panel is dynamic from a sql database, and I use a Repeater to display the returned sql. 

 Here is my code from my page for the panel.  Did I forget something????


Stop Sorting Cross Tab Report Header


Dear, I want to stop sorting in cross tab report header. And also want to sort in specific order. How can i do that? Please help me. Its urgent


Data Security: Stop SQL Injection Attacks Before They Stop You


To execute a SQL injection attack, a hacker writes a Web page that captures text in a textbox to be used to execute a query against a database. The hacker enters a malformed SQL statement into the textbox that causes the back-end database to perform operations the owners did not intend it to perform, like making unauthorized updates. This article explains how you can protect against the all too common SQL injection attack in your own database. The steps covered include data validation, proper exception handing, and much more.

Paul Litwin

MSDN Magazine September 2004

UserControl like asp:Panel


Is it possible to write own User Control with functionality like asp:Panel?

Dynamic Checkboxlist exception when adding to Panel when using Master Page


In essence, I am creating Dynamic Checkboxlist controls and adding them to a Panel.  It works well when I do not have a Master Page configure to this webpage. Once I have a masterpage congifured.. I get a "Object Reference not set to instance of object" error on the Panel_Control.Controls.Add(Checkboxlistnew) line:

protected void Page_PreInit(object sender, EventArgs e)
        XML OXML = new XML();
        alistChkBoxLabels = OXML.XMLTransform("C:\\Documents and Settings\..\\Config_new.xml", "config_options/check_box/applications/app/@name");
        int count = 1;
        alistCheckisFacility = new ArrayList();
        alIDTracker = new ArrayList();
        while (count <= alistChkBoxLabels.Count)

            Checkboxlistnew = new CheckBoxList();
            Checkboxlistnew.ID = count.ToString();
            Checkboxlistnew.Items.Add(new ListItem(alistChkBoxLabels[count - 1].ToString(), alistChkBoxLabels[count - 1].ToString()));

            String sAppName = alistChkBoxLabels[count - 1].ToString().Trim();

            alistCheckisFacility = OXML.XMLTransform("C:\\Documents and Settings\\Administrator\\My Documents\\Visual Studio 2005\\WebSites\\User_Trial\\Config_new

Treeview problems in Update panel



I tried using this code, on a Treeview inside an update panel, which is populated dynamically in code behind. 

However, it doesnt give me the required functionality.

Following is my aspx code for the TreeView and the TreeView populating logic:


<div id="treelist">
<asp:UpdatePanel ID="UpdatePanel1&quo

Accordion Control with Panel...Add an Update Panel?


I have an accordion control in my web site.  And in one of the panels, I have a drop down list box where, when the user selects an item, it updates the labels right below the ddlistbox.  I have it so that it maintains the scroll position when the ddlistbox has an autopostback, but it's very obvious that the whole page posts back.

My question is, can I/should I just enclose the ddlistbox and the labels (and a couple of text boxes) in an AJAX update panel?  I already have a ToolScriptManager (because of the accordion control), so I don't need to have another script manager, right?  I can just put the update panel (with the other controls inside of it) right in the accordion panel, right?  Then when the ddlistbox posts back it won't have the delay of the whole page posting back?  And it'll still execute the event handler for the listbox selection change?

Does this sound right?  I'm just looking to make the post back "invisible", and I would like to do a partial postback of just these few controls.

Thanks in advance! :)

update panel in content page



iam using master page  and i am using update panel in content pages (child pages)

my questions is that can use updatepanel in every child page or  master page only.

give ur suggestions, i have senario , in a page i have file upload concept ,updatepanel

is not support that fileupload.

Allign a Panel to Bottom of a DIV


Hi All

Is it possible set the alignment of a Panel to the Bottom of a DIV?

Any examples would be appreciated




Checkbox will show panel based on selection without postback.. how to do



I have Two Checkbox in my asp.net textbox..

First what i want is

based on two checkbox user has to be select any one only..

if checkbox1 is selected then Panel1 visible true without postback

if checkbox2 is selected then Panel2 visible true without postback

How to stop the repeated database queries for roles


Hello, friends,

We have a web application using VS 2008, c#. We try to filter siteMap nodes based on security roles. We have our customized the mether GetRolesForUser() in RoleProvider class to determine a user's role. In this method, roles will be returned by querying an SQL Server database.

However, we found that each time a page was loaded/refershed, this  GetRolesForUser() was called, and the database would be queried. This is too MUCH and expensive.

We thought the roles should be queried only once when a user logs in. After that, role info should be stored somewhere for this user, rather than query DB all the time.

Any ideas, reference paper, snipet,...,?

Thanks a lot!

how to start and stop thread with button


hi all,

i am new to threading.

im trying to write a simple application which will update a textbox (on other thread) when button clicked.

and stops when clicking on "stop".


when i click on the "start" it  starts but for some reason the app freezes, when i debug the prog i can see it  is running  but the main window stays frozen.


please help.

Wizard in an Update Panel


Hi everybody. Heres the deal. I have a three step Wizard with various textboxes in it. I out the Wizard inside an Update Panel and Content Template. I launch the site and the first step of the wizard is executed nicely but when I click next to get to the second step, nothing happen. If I take the wizard out of the update panel then it works fine.

Any help would be very much appreciated cause I am a bit new in ASP.NET.

Thanx a lot.

Trying to set update panel trigger programmatically


 I have a recursive sub that finds a dropdown list and sets up an AsyncPostbackTrigger for an update panel. I have tried calling this sub both from page_init and page_load 

If the dropdownlist is within the update panel, eveything works fine. If the dropdown list is not in the updatepanel I get error

A control with ID 'ddlPersonFilter' could not be found for the trigger in UpdatePanel 'up1'. In both cases the sub does find the dropdown list and executes the code to set up the trigger. Thanks for your help.

    Private Sub SetUpdatePanelTrigger(ByVal oControl As Control)
        For Each ctrl As Control In oControl.Controls
            If TypeOf ctrl Is DropDownList Then
                If CType(ctrl, DropDownList).ID = "ddlPersonFilter" Then
                    Dim thisddl As New DropDownList
                    Dim thistrigger As New AsyncPostBackTrigger
                    thisddl = ctrl
                    thistrigger.EventName = "SelectedIndexChanged"
                    thistrigger.ControlID = thisddl.ID
                    Exit Sub
                End If
                If ctrl.HasControls Then
                End If
            End If

Ajax Asyncfileupload doesn't work as soon as I put it in a control


Hi guys,

I can't get my <ajax:asyncfileupload> working and I don't see why...

When outside any panel or table it is working well, but as soon as I put it in a <asp:panel> or table I get a strange error which seems to be on client-side but I don't understand what's happen here. Here is the code and code-behind and Javascript.

Here's the error: 


Here's my front-code:

<%@ Page Language="VB" MasterPageFile="~/masterpages/mpSqueletton.master" AutoEventWireup="false" CodeFile="frmAdmGestSocietes.aspx.vb" Inherits="adm_frmAdmGestSocietes" title="Untitled Page" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajax" %>

<asp:Content ID="Content1" ContentPlaceHolderID="cphHead" Runat="Server">
<script type="text/javascript" language="javascript">    
        function uploadError(sender,args)
          document.getElementById("<%= lblStatus.ClientID %>").innerText = args.get_fileName(), "<span style='color:red;'>" + args.get_errorMes

How to stop unauthorized users from sending documents to a Records Center site?


I can't find a way to stop unauthorized users from sending documents to a Records Center site. Can someone please help me? Do i need to configure anything to restrict it to the members of the web submitters group?

I'm still using MOSS2007


The impossibility of doing things depends on your will to do it.

BDC + Document Information Panel Javascript Error


I hope someone here can shed some light on this one...


We have a document library configured with a few content types and document information panels for those items. Also on this list we have a BDC column setup to pull client names from MS CRM. This works fine on the list itself, however, in Word 2007 - the picker does not show up in the DIP, so we cannot easily select clients without knowing the name (first issue).

Secondly, if we enter in a client name, or partial, we recieve the following error:

"There was an error in the validation code" - with the following details:
Document Information Panel cannot complete this action, because of an error
in the form's code.
The following error occurred:

Object required
FileTongue Tiedcript.js

Any help is appreciated!

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend