Web Forms :: Clearing Browser Caching Xml Files?

Nov 30, 2010

i want ot clear the browser caching xml files as i am not abel to load the newly edited xml file

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Similar Messages:

Caching User Control And Clearing That Cache Programmatically?

Jul 13, 2010

I'm trying to cache user controls and on some pages i want to cache single objects. There are multiple ways of implementing caching, and my head is breaking over it.

The way I see the caching options now:

You have the PartialCaching option which is set to cache the control for 30 minutes, and after that it clears itself... You have the varyByParam to identity the page by its querystring paramaters... or other vary options

But i just cant find an appropriate way to add caching to a control, and be able to clear the caching programmatically when i update one of the objects used in the control from the backend.

You can do HttpContext.Current.Cache.Insert(), which accepts a key on which you can destroy the caching item later by using remove... This can save objects in cache but can you use options like varyByParam?

My questions are burnt down to two:

Is there a way to clear the caching on specific user controls from the code? If yes, can this be done according to the varyby options? How would the object caching respond to logged in users or anonymous users using Insert()?

EDIT: I'm caching multiple things.... And I'm really flabbergasted in which choice to make referring to caching. Can the Cache.Insert be varied by Parameters?

The main problem is peopling editing things from the backend, which needs to trigger an event that reinstantiates or clears all caching items referring that object.

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How To Ignore A Http Request Without Clearing The Browser

Mar 24, 2010

To prevent duplicate requests (i.e. pressing F5 right after clicking a command button), I've setup my page base class to ignore the request if it's detected as a duplicate.

When I say 'ignore' I mean Response.End()

Now I thought I've seen this work before, where there's an issue, I just Response.End() and the users page just does nothing. I don't know the exact circumstance in which this worked, but I'm unable to repeat it now.

Now when I call Response.End(), I just get an empty browser. More specifically, I get this html.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<META http-equiv=Content-Type content="text/html; charset=utf-8"></HEAD>

I setup the following test app to confirm the problem is not elsewhere in my app. Here it is:

Add the following to an aspx form

<asp:Label ID="lbl" Text="0" runat="server" /><br />
<asp:Button ID="btnAdd1" Text="Add 1" runat="server" /><br />
<asp:Button ID="btnAdd2" Text="Add 2" runat="server" /><br />
<asp:Button ID="btnAdd3" Text="Add 3" runat="server" /><br />

And here's the code behind file

using System;

namespace TestDupRequestCancellation
public partial class _Default : System.Web.UI.Page
protected void Page_Init(object sender, EventArgs e)
btnAdd1.Click += btnAdd1_Click;
btnAdd2.Click += btnAdd2_Click;
btnAdd3.Click += btnAdd3_Click;
protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
CurrentValue = 0;
else if (Int32.Parse(lbl.Text) != CurrentValue)
protected void Page_PreRender(object sender, EventArgs e)
lbl.Text = CurrentValue.ToString();
protected int CurrentValue
return Int32.Parse(Session["CurrentValue"].ToString());
Session["CurrentValue"] = value.ToString();
void btnAdd3_Click(object sender, EventArgs e)
CurrentValue += 3;
void btnAdd2_Click(object sender, EventArgs e)
CurrentValue += 2;
void btnAdd1_Click(object sender, EventArgs e)
CurrentValue += 1;

When you load the page, clicking any button does what is expected, but if you press F5 at any time after pressing one of the buttons, it will detect it as a duplicate request and call Response.End() which promptly ends the task. Which leaves the user with an empty browser.

Is there anyway to leave the user with the page as it was, so they can just click a button?

Also; please note that this code is the simplest code I could come up with to demonstrate my problem. It's not meant to demonstrate how to check for dup requests.

EDIT: Another change that will allow me to achieve the same results would be to disable all my event handlers.

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Clearing The Value Of File Upload Control Using Javascript That Works On All Browser?

Sep 24, 2010

We are running following javascript function:

function btn_AddToList_Click() {
var filePath = document.getElementById("FileUpload").value;
if(filePath.length > 0)
var opt = new Option(filePath,filePath);
var listBox = document.getElementById("ListBox");
listBox.options[listBox.options.length] = opt;

Function binding:

protected void Page_Load(object sender, EventArgs e)
if (!IsPostBack)
btn_AddToList.Attributes.Add("onclick", "btn_AddToList_Click(); return false;");


asp:FileUpload ID="FileUpload" runat="server" Width="394px"
asp:ListBox ID="ListBox" runat="server" Width="394px"
asp:Button ID="btn_AddToList" runat="server" Enabled="true" Text="Add"

Issue is that value of "FileUpload" is not get cleared after we click "Add" button.

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State Management :: Clearing Session Variables On Browser Close?

Nov 10, 2010

Session variables are on server side. I need to clear out the server side session variables on browser close on client side. I have used a WebService and ajax call but still i am not getting the session cleared.

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Web Forms :: Caching Images / Files Without Using Iis?

Feb 1, 2011

i recently made a website and have uploaded it to a hosting server. After i had completed the website i noticed that i never added in any expiration onto the files/images plus that i dont know how to do this outside of IIS. As i dont have access to the IIS on the server i need a way of embeding code to set a short exportaion on the images and xml files cached. whats the best way of doing this?

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Web Forms :: Caching Of Files - Noticeable Delay As Asp Recompiles

Mar 15, 2011

I have gotten confused about how page caching works in ASP.NET. Suppose a user has navigated to "home.aspx" on my website and say I release a new version of that page to the server and the user subsequently navigates to that page, he will get the updated version, is that correct? Is there ever a case where I need to be concerned that the user is NOT getting the latest version of a page(or code-behind) file? The reason I am confused is that quite sometime ago, I found the following code to put in my Page_load event to prevent page caching:


But the more I think about it, I cannot remember the rationale behind this. Whenever I do a release and subsequently visit my site, there is a noticable delay as ASP recompiles. So now I am wondering why the above "no caching" code would be needed or when it is appropriate to use.

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Web Forms :: Prevent Browser From Caching Image - Trsponse.Cache.NoStore Didn't Work

Feb 22, 2011


How to prevent browser from caching image, Trsponse.Cache.NoStore didn't work

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UpdatePanel With Browser Caching?

Jan 13, 2011

I recently learned that UpdatePanels use HTTP requests with the "no-cache" header added. This causes images inside it to be downloaded on every UpdatePanel update. Do not want.So how do I prevent this?I've thought about extending the UpdatePanel control and try scraping out the "no-cache"-part of the requests, but surely there must be a more elegant solution.

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Caching Css And .js Files?

Dec 5, 2010

I want to use caching technique for .js,.css and images( to avoid round trips and to improve performance of page load) .So, on IIS 7 using Http Response Header, i set Content Expriation to 7 days.Now, on browser its caching which is avoiding round trips for static content ...which is good sign.Now, i modified one of the .js file and i deployed that .js file on server and due to caching my new code is not reflecting on client machines .So i tried lot of ways and here is what i tried after deployment of new .js file After deployment of new .js file

1) I manually delete all the browser cache(cookies,urls,forms,page content etc) on internet explorer

2) used ctrl + f5 to get refresh

3) again on IIS i went back Http Response Header section and set Content Expriation to never

4) stopped the website and restarted

5) on web.config file tried this only

<clientCache cacheControlMode="DisableCache" />

6) Also tried to set this on .aspx page

<META HTTP-EQUIV="Pragma" CONTENT="no-cache">

7) tried to set this on .aspx.cs file

<% Response.CacheControl = "no-cache" %>>
<% Response.AddHeader "Pragma", "no-cache" %>
<% Response.Expires = -1 %>

My target browser is IE.None of them worked,Finally i renamed my .js file to different file name and changed code to make use of that new .js file ..but no luck on this too .Because what i set intially for 7 days still my client machine remembers that.

How do i tell IIS server to refresh cached content code , when some thing got changde on .js or .cssfiles?

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VS 2010 / Leverage Browser Caching And Enable Compression?

Jan 10, 2013

On PageSpeed Insights they recommend highly doing two things:

1) Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

2) Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

We are with Network solutions and believe they are using IIS 6 with regular asp.net code. Some of the images are using Amazon S3/Cloudfront.

How do we implement the above items? I see a lot for IIS 7.

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C# - How To Implement Caching Of Static Files

Mar 15, 2011

I use a Masterpage (asp.net webforms) on my site and I woluld like to implement caching of some static files, like javascript, css etc.

I've tried adding the following to my page_load (in the masterpage) but when I use Fiddler the static files are still under "no-cache".

protected void Page_Load(object sender, EventArgs e)
// Set cache for 1 hour on all computers and servers.
// ... Proxies, browsers, and your server will cache it.
Response.Cache.SetMaxAge(new TimeSpan(1, 0, 0));

What am i doing wrong here?

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Configuration :: Caching And GZIPing Javascript Files?

Apr 26, 2010

i have some javascripts file which i need those to be chached for my website. also can i GZIP javascript files?

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Refresh # Include Files - Caching On IIS7 / ASP?

Jul 28, 2010

I have an ASP.NET master page which references a #include file as follows:

<!--#include virtual="/includes/scripts.inc"-->

I have modified the file /includes/scripts.inc but the changes do not show up in pages. What needs to be done so modifications will be reflected? I need to avoid the following: restarting the server restarting IIS modifying web.config (doesn't appear to have any effect)
pretty much anything that causes the app domain to restart Any other options? Is there a setting which affects how long IIS caches #include files?

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Mvc Site Is Not Caching Content Or Script Files?

Mar 18, 2010

My asp mvc site is not caching content or script files. How do I get it to cache such?

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Caching - ASPX And ASCX Files Not Updating When Saved?

Mar 4, 2011

At some point in the last month, two web application projects that I've been working on have stopped showing updates to aspx and ascx files until IIS is restarted, or the website they belong to is reset. This seems to be very random and I can't find any reason in the web.config sections that would cause this change. What are some good places to look for a source to this issue?Current caching parts of web.config: Removing the outputCacheProfile and restarting IIS made no difference.

<add name="ClientResourceCache" location="None" enabled="true" duration="3600" varyByParam="*" varyByContentEncoding="gzip;deflate"/>

Commening out the staticConent and restarting also made no difference

<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="1.00:00:00">
<add extension=".gif" policy="DontCache" kernelCachePolicy="CacheUntilChange" duration="0.00:01:00" location="Any" />
<add extension=".png" policy="DontCache" kernelCachePolicy="CacheUntilChange" duration="0.00:01:00" location="Any" />
<add extension=".js" policy="DontCache" kernelCachePolicy="DontCache" duration="00:01:00" location="Any" />
<add extension=".css" policy="DontCache" kernelCachePolicy="DontCache" duration="00:01:00" location="Any" />
<add extension=".jpg" policy="DontCache" kernelCachePolicy="CacheUntilChange" duration="0.00:01:00" location="Any" />
<add extension=".jpeg" policy="DontCache" kernelCachePolicy="CacheUntilChange" duration="0.00:01:00" location="Any" />

We've also tried adding .ascx and .aspx extensions with CacheUntilChange which made no difference. Other sites with these same settings aren't having the issue. Edit: Originally this state that there also was no update when the project was built, I haven't personally been able to confirm that issue but was told by another developer that was occurring.

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Web Forms :: Download PDF And Doc Files In Browser

Mar 16, 2010

I am developing a application similar to a forum. I want to attach documents in .doc and .PDF formats. I want to know how could i download these attachments and open directly in a browser without saving the downloaded document.

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Web Forms :: Upload Large Files From Browser To Server Using Ftp?

Feb 9, 2010

I have a requirement to upload large files using dotnet using ftp. Any opensource programs available?

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Forms Data Controls :: Open Different Files In Browser

Nov 11, 2010

i have a gridview and in that there is a dropdown and hyperlink hyper link href changes accordingly by dropdown thats working fine... i need to open the file of any type in browser/Application e.g .doc should open in ms word/browser, .xls should open in ms excell and .pdf should open in acrobat reader, if application is not installed on the machine it should ask to save it.

i have a folder in d:program filesCRM...Library and i want to access these files from it after searching on Google i come to know its impossible to access files from different drives and folders other than virtual directory?? so i made virtual directory of library(it has a small white icon on the folder in iis) under my localhost [URL] website when i access any file e.g. [URL] it just throws error resource could not be found???

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Web Forms :: Access Files On Client Machine Using Browser?

Apr 29, 2013

Is there a way we can access image files from client machine in asp.net?

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Web Forms :: Open Word Excel PDF PowerPoint (PPT) Files In New Browser Window?

Mar 26, 2016

Below is the page and file is in local drive.

<asp:GridView runat="server" ID="gvDetails" AutoGenerateColumns="false">
<asp:BoundField DataField="Id" HeaderText="Id" />


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State Management :: Partial Page Caching (user Control Caching) And Button Events?

Jun 14, 2010

I have a page with a number of user controls, In one of my user controls I have a button event. I turn on output cache for the user control that has the button and vary by control using the ID property of a hidden field control in the user control. whenever I turn on the output cache my button event doesn't fire.

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Update Browser Detection Files For ASP?

May 26, 2010

I have an ASP.Net site on which we're using control adapters. We have the adapters mapped to a "refID" of "Default." These adapters are working fine on all browsers except Chrome and Safari. For those browsers, they do not execute. I've given up trying to figure out why -- I have a question here on SO that no one has been able to answer, and I've been researching it for days now. It's just inexplicable.

I have tested the same code in my local environment, and it works just fine. Additionally, no one else can replicate my problem on other servers. It seems to be somehow confined to the machines at my client's site. Could they be somehow out-of-date? If this is the case, is there some way to "update" the .browser files? I'm half-tempted to just copy the .browser files out of the Framework directory from my machine over to theirs, but I'm curious is there's something more formal than this? Is there some other source of data that ASP.Net uses for browser detection other than these files?

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Opening Files In Another Browser Page / Tab

Mar 22, 2010

i have an action that return a file content. i added:

Response.AddHeader("Content-Disposition", "attactment; filename:"" + survey.File + """);

so that the image would be opened in another tab/page, gets opened in the current tab/page. whats wrong with the header?

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WCF / ASMX :: Implement Caching Using System.Web.Caching?

May 15, 2010

how to implement caching in wcf service using System.Web.Caching

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