How would you troubleshoot a page that is rendering slowly in ASP.NET?
This issue is happening on only specific pages with a few user controls. Other pages work fine. Tracing has clarified that the issue is happening between "Begin Render" and "End Render".
Page B - loads slowly and needs to do some CPU-intensive operations on the web server.
I noticed that when someone is loading Page B, then Page A also loads slowly. This is even worse if multiple users are loading Page B at the same time. Page A won't finish loading until Page B is done.
Is there a best practice for making sure that Page A can still load quickly? Maybe a config setting or IIS setting that I need to change from its default? With 2 users loading Page B at the same time, the web server CPU usage only gets to 30% so I suspect it might be something I can tweak with the settings.
I have a Webforms, AJAX-enabled web page which, when rendering large amounts of data, is extremely slow to load in IE (we're married to IE - no other browser options). In an attempt to determine the source of the slowness, I viewed the HTML source (about 2.5 MB) and copied all of it (except for the Ajax JavaScript calls) to a blank .html file. IE renders this file MUCH faster than when the rendering happens through .Net. This seems to indicate that the AJAX JavaScript is slowing down the display of the page. Does this sound plausible? Any recommendations on improving performance here?
I've already eliminated as many UpdatePanel controls as I can from the page, but it doesn't seem to help with render time.Update... In the HTML source, I noticed that at the bottom of the screen, a call to WebForm_InitCallback() appears. When I executed this call directly through javascript:alert(WebForm_InitCallback());, the CPU spikes for 12 seconds before it completes! This call is here because I implemented ICallbackEventHandler to try to accomplish some traditional-style AJAX handling. Looking at WebResource.axd, that WebForm_InitCallback() method iterates through the entire form and attaches some kind of events to EVERY SINGLE textbox, checkbox, radiobutton, etc. So I guess I really need to abandon ScriptManager and UpdatePanel altogether here.
I have used CKEditor in my ASP.NET pages. But after than, that pages are very slow. Is it possible that it is caused by CKEditor?
View 1 RepliesDo you know of a library/httpmodule for logging slow loading pages (perhaps for a specific treshold) in an ASP.NET environment?
Google did not yield any results.
It would not be too hard to implement on my own, but why re-invent the weel.
So i'm new to AJAX and just installed the AJAX toolkit.
When i have tried to used any of the object there my page are really slow, it like the server is forever to compile the site and when that is done the browser shows it in a flash.
You can see here :
[URL]
This is not a problem when using only ASP.NET.
When i debug in VS2008 i can see that is looking for some random files when compiling like C:AjaxBuildAjaxServerAjaxControlToolkitToolkitScriptManagerToolkitScriptManager.cs and alot of other stuff, it goes through alot of setting there and i think that is the hold up, why it's so slow.
I have Sp1 installed, running Windows 7 64bit.
These pages are very small and standard. I basicly drag a toolkitscriptmanager, htmleditor, textbox and two buttons to the form. There isnt more.
This is the code for the first page :
[Code]....
The host has AJAX support and has installed SP1 for .NET.
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.
View 4 RepliesMy 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.
I have an ASP.NET (framework 2.0) web app running under IIS7.hen I run the app on the server, using IE8, localhost the app runs the way it is supposed to.When I run the app in Visual Studio 2008 (framework 2.0) it runs the way it is supposed to.But when I try to run the app from another computer it renders incorrectly.Same versions of IE8.What would cause the serving of an ASP.NET application to render correctly on the server, but incorrectly when serving to another computer, when the Internet Explorer versions are the same?
View 1 Repliesmy VS is rendering my ASP.NET pages twice in the default IE browser when I press "View in browser" or "Start without debugging" button.
View 1 RepliesMy environment is Windows 7 (64bit), with IIS7. I have a web application that I have hosted remotely, as well as running it locally. The problem is that, when running it locally, I would like to go to the app's address at [URL], but when I do this, the page seems to "Half" render, meaning only some images are shown, styles are not being applied, etc. It is very strange.
However, when running the exact same app in debug mode from Visual Studio (which provides a port, like so [URL]), then the App runs fine. I've looked through all IIS settings, and I am not spotting anything obvious that might be causing this. The default port should be 80 for the app. As far as I know I have left all IIS settings default for the most part, and I've installed every single Windows Feature related to IIS, from the control panel.
I often Observed that pages developed in simple asp is being load most speedy then pages developed in asp.net ,
View 5 RepliesWe recently migrated to v4 of .net. We are running iis 7 in integrated mode. When the site first starts its slow. I get that - it compiles for the first time. The odd thing is then we will go to certain pages and it seems to compile again. The next time i go that page its very fast. Nothing exceptional with the second page - but once that is hit the rest of the site is fast.
View 1 RepliesI am using two user controls in my page. The controls are loaded dynamically one at a time. I'm just referencing the user controls in the page and loading them dynamically using 'LoadControl()'. Everything is working fine till now and the user can switch the controls one another.
Here the issue I found is eventhough the controls are working as expected and the data is visible, the rendered HTML contains only the first loaded user control's markup.
Even if the current control displayed is 'usercontrol2', the source shows 'usercontrol1' markup. How can I force the page to render 'usercontrol2' markup and remove 'usercontrol1' markup while loading'usercontrol2'?
I have a user control with a datagrid and few other information on title and summary. I would like to render this control to an Excel file !
The problem is , as soon as i try to open the rendered xls file, Excel reports an error, that the file extension is not valid, and that it is not from a trusted resource.
Page A loads very fast; Page B loads very slowly and does some CPU-intensive things on the web server. I noticed that if someone is loading Page B, then Page A also loads slowly - for ALL users. What is the standard practice for making sure this doesn't happen? If multiple users are loading Page B at the same time then Page A is ridiculously slow. Is there an IIS setting, web.config setting, or hardware configuration I could use to make sure that the fast-loading pages aren't bogged down by other pages that need more time to load?
View 1 RepliesI have 2 master pages Default.aspx is from Site.Master and some more pages that are from Admin.Master, I have used the code that to prevent the user from going back to previous pages after logout.
Here is my code
function preventBack()
{
window.history.forward();
}
setTimeout("preventBack()", 0);
window.onunload = function () { null };
The problem I am facing Admin.
Master page i.e I have Home.aspx, AboutUs.aspx,Admin.aspx,AddItem.aspx I was unable to navigate between those pages also. how to solve this. I have tried other methods also, but still facing same problem.
Two separate questions, but sufficiently intertwined that I'm going to try the two together....
Firstly - User Controls and Behaviours
I have a User Control which contains a few visual controls. I am attaching some behaviours by using GetScriptDescriptors and am passing some JavaScript to the browser using GetScriptReferences. That is all rock solid and working well. However, when developing, I did discover that I couldn't attach the ehaviours to the User Control itself - not surprising as rendering a User Control does not create a DOM element which represents the actual control. So, I have attached my behaviours to a "random" TextBox within the User Control.
So - first question, is there a better way to do that? For example, should I always be rendering a SPAN as an element to surround the control? Not sure what that would do to the robustness of the rendering. What is the right way to attach a behaviour to a User Control.
Secondly - Accessing those same Behaviours later
Assume I have placed a User Control on the page. That User Control exposes a Property (actually a Javascript Function of course) which does "something" to the control - for the sake of example we'll say that the function is set_Border(colour). I then have a behaviour on the same page (actually an Extender on a different control) which needs to call the function. I have a reference to the User Control in my script, so I have tried TheControlReference.set_Border('red') and find that my control doesn't support the set_Border method.
I guess this is probably because the behaviours are not attached to the User Control itself, but to a GUI element within it. Hence, I suspect that the answer to the second question lies within the answer to the first.
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
View 11 RepliesIssue:
As my pages are taking time to load first time.
So user has to wait till full page gets loaded and thats irritating . Was this the reason MVC was evolved?
Solution :Should i use partial rendering on all pages including home page, and all forms getting called from home page.
So even if half page is loaded thats less frustrating
For Partial rendering what i plan is : i will put Scriptmanager with Enable partial renderingand update panel for half part of page.
So that user dont have to wait for full page to load.
Is my plan correct? Problem is i cannot regenerate page load issue every time.
In application all sql connection close properly, Also when user log out its connection close still sql process memory increase in RAM and after some time Application slow down.
View 3 RepliesDoes 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)
[Code]....
where context.User is source.Context.User where source is the HttpApplication.
I render some markup dynamically in a Web User Control, can I get that out in design mode, and not only runtime?
public override void RenderControl(HtmlTextWriter writer)
{
if (this.DesignMode)
writer.Write("<p>In design mode</p>");
else
base.RenderControl(writer);
}
... nothing happens when I check the design view of the control. Not if I remove the if (this.DesignMode)-condition either.
I have a web page using MasterPages built in Visual Studio 2010 Pro. Currently, in the Head of my MasterPage file, I have my reference to my jQuery 1.4.2 file. When I go to a content page referencing the MasterPage I don't get any jQuery intellisense support. (Looks like I just get JS support?) What is more frustrating is the lack of Intellisense in my User Controls (.ascx) - It makes sense though since VS has no idea knowing if my UC will be loaded into a MasterPage referencing the jQuery.
My Scripts folder has one file - jquery-1.4.2.min.js
[Code]....
I have taken over an application where the original developer has used an inordinate amount of user controls and master pages. There are multiple master pages all over the site, with user controls on top of user controls through out the site as well. Some of the user controls are reused, many are not. Would you deem this an efficient or worthy use of user controls and master pages? From my point of view it clutters the project and makes debugging a real chore.
View 2 Replies
