Web Forms :: User Controls In Place Holders Very Slow?
Jan 29, 2011
My web app has one main page, which is like a work bench. Within this work bench I have 3 placeholders that I load 3 different user controls into (only displaying one at a time). It works, and loads ok although it is very slow.
For instance; Each user control has a 'New' button. when I click this it takes anywhere from 3-10 seconds just to refresh the page, and display all the original default values.
I gues there is a lot of info being sent/returend to/from the server (The main workbench page, and the usercontol), but it still seems to be taking way too long. I have a customer using my application, and they have raised the issue, and have even experienced delays of around 30 seconds for simple tasks.
I have walked through my code with the debugger in vs2010 and nothing seems to take a long time. I have also used Firbug to try and find out what is going on, along with setting Trace="true" on the page to try and resolve the issue. Its all just numbers to me, I have no idea what is going on.
This is my scenario. I have a couple of content place holders on a Master page which by default are empty.Two of the content place holders are laid out side by side. I'll call one MainContent and the other SidebarContent. What I'd like to see happen is if a child page has content in the SidebarContent, the width of the MainContent should be adjusted accordingly.Is there a way to determine at runtime from the Master page if the calling child page has populated the SidebarContent?How do I go about this, if possible?
I am a newbie to ASP.NET using C#, .Net 3.5, VS2008, MySQL, ODBC connector. I am creating a login page and passing username to get the password from MySQL database. However the lines of code highlighted does not work correctly and does not fetch result.
I want to have only 1 placeholder on the page and depending on which buttons are pressed, different user controls are dynamically added. To add to the fun of everything, I need to pass in different values for each user control.
I know that in order to have the values passed into the different user controls and bind to a certain list it needs to happen in the Page_Init inside of the .ascx.cs file - aside from that, I am lost.
I have an .aspx page with multiple .ascx (User Controls on it). One of the User controls is very slow in loading (calls a very slow webservice for the data.). Now, my question is how to render all the controls on the page (so the User can view those) and have a rotating icon for this control (slow one) (till it loads). I know, I need to bring AJAX into picture, but any clarification on that would help as I will be new to AJAX programming.
Can some assist me with a great sight really explaining multiple contentplaceholders in the masterpage. I having issues, only one of my content holders display when runing the master page. below you will see the content 4 "Example", its not displaying can someone assist me.
I have developed a gridview which has 7,000 records with some filtering. However, theuser is compaining that it is too slow. It seems to me that if the records were stored in memory it would be much faster. This is caching, I think. Is that the case? Can you updaterecords this way? Can you cache with an Access database or do you have to use SQL Server? Can you think of any other ways to improve
I veguely remember that there was a login/logout control in my ASP.net class, but I don't know what options there are for managing user logins, the only one I'm aware of is the Windows Authentication mechanism.
I'm trying to include a user control in an aspx page, it works fine, but my control does position itself where I want it and always appears at the very top of the page. Could it have something to do with the masterpage? I've tried registering the user control in the master page, but I don't know how to reference it in the content page.
In my Default.aspx page I register my usercontrol at the top:
I created a simple web application project in VS 2008. I added a master page to it. I then added two panels to it. In each panel I added a ContentPlaceHolder. To each ContentPlaceHolder I added a ContentPage.
When I run it using the Vs 2008 internal web server none of the Content holder pages are displayed.
Here is the code:
<%@ Master Language="C#" AutoEventWireup="true" CodeBehind="Site1.master.cs" Inherits="WebApplication5.Site1" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Does anyone have a clue why setting the Principal for the context would be so slow that a request times out? I have a custom HttpModule that subscribes to the "AuthenticateRequest" event. I have this call which works fine to create the Principal (which makes all the DB queries)
where context.User is source.Context.User where source is the HttpApplication.
In my asp.net application, user can send/upload aspx files & those files can be accessed by the users later(there need to implement code level security as it would be better to run the application with minimal permission). So now I need to store these files & where is the better place to store in it. Shall I create a folder giving low permission inside the current project? or shall I create separate virtual directory like "www.mydomain.com/files" & place in it. I want to prevent the restarting of application domain also.
I have read the post at http://forums.asp.net/t/1403132.aspx regarding login control. Is there a place to store the User logged-in ID (info) for later checking and use? I don't need to use the session object. I don't need the page to expire. I don't need the user to use a page saved in the favoites.
I have a really weird problem that I've been investigating for at least one week now. I deliver a website hosting both ASP classic and .NET 3.5 content in IIS6 on a Windows 2003 server environment with MySQL db backend. The solution has been installed on several servers (some hosted in WMWare) with no problems. On one specific server, also hosted in WMWare, the user experience great performance issues on the website. The problems are most seen when using database resources and is not limited to either .net or asp classic, but I am still not sure that the problem is only related to database calls.
Following components are involved:
IIS6 .NET FW 3.5 MyODBC 3.51 / 5.1 MySQL 4.x
Code executed on the server using all resources above runs smoothly when the IIS is not involved. The website shows times up to 2 minutes to execute code that takes 2 seconds outside the IIS. The exact same code is executed. Using profiling tools, I've seen that the great loss comes within calls to unmanaged code, for example when System.Data.ODBC namespace to calls into myodbc.dll.
The tricky part is: If at least one console user is logged in to the server, the performace problems are not seen anymore. When the user logs out, the problem appears again.I have tried to reinstall all components above, tried different versions of MyODBC, tried different website authentication methods, tried to run website under administrator privilegies, installed various MS KB's with no success.
what is the best way to show/hide controls in .net?
I have a page with many show/hide depending on the control value.
eg. radio button list rbl (dynamically generated from the database values)
based on the radio button list value,will need to show/hide the other controls.
if the value is 1, will need to show or hide dropdownlist1.
if the value is 2, will need to show or hide dropdownlist2.
However when I toggle the dropdown for the second time, it became very slow. The first time is okay.
I have also tried using ScriptManager and UpdatePanel (putting the controls inside the UpdatePanel), but it is also very slow when toggling dropdown for the second time onwards, causing the page to hang.
Using basic web controls to design an interface is a headache and impossible task for me. I am trying to place controls on a tabcontainer for web application and trying to align the controls exactly where I want them is impossible. Trying to drag a button the center is just one of the many tasks I am trying. Visual studio 2010 ,with silverlight is so much easier but I need a licence.
I have two webforms for different performance.If the slow web form with several dropdownlist with 10000 items from database, it will be delay when typing some letters in the textbox.But when typing letters in the fast webform with dropdownlist with 5 items from database, it will be no delay when typing some letters in the textbox