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Hey peeps,
I have a problem i would like help with.
I have created a webhandler i use for displaying images, its ProcessRequest looks like this.
public void ProcessRequest(HttpContext context)
{
HttpResponse response = context.Response;
HttpRequest request = context.Request;
response.ContentType = "image/jpeg";
response.Cache.SetExpires(DateTime.Now.AddDays(7));
response.Cache.SetCacheability(HttpCacheability.Public);
response.BufferOutput = false;
writeSingleImage(Convert.ToInt32(request.QueryString["ImageID"]), Convert.ToInt32(request.QueryString["Size"]), response.OutputStream);
response.End();
}
The writeSingleImage function just retrieves the image frmo the database and writes it out to the response.
No i have made users able to rotate images, but since the webhandler caches images they wont be able to see changes until their cache expires.
So i want to remove a single cached image when users rotate that image. Hov do i do this. All i done to cache the image is what you see in the ProcessRequest above.
Hope somebody have an idea, because i really dont know too much about caching.
-Anders, DK
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The image is being cached in either the browser's cache or their proxy server's cache (HttpCacheability.Public). So the cache must be cleared by the client. You *might* be able to get around this by adding a random value to the parameter string of the url they use to request the new image. So when they submit the GET request it looks something like this:
?ImageID=34&Size=500&noCache=342
You never have to check the "noCache" parameter, but the browser probably will make the request instead of pulling it from cache because the url has changed.
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Hello,
I understand that this's a strange question and I hope that's the place where I'll find a solution.
I've got a dynamic site (I can't tell the name due to privacy), which is an ASP.NET 1.1 / MSCMS 2002 application.
I need to download each page related to dropdownmenu, for example if a dropdown has got 3 values, I'll have to write down 3 pages, this works....
I've simulated the passage of all parameters by code taking them with an HTTP Traffic Analyzer, but when I open the downloaded page, I receive two times the grid contained in it. This doesn't happen when I open the page from ie. I think that for some items there's a copy of data in CMS but I've never developed with it and I don't know how to solve it, if someone has any idea, suggestion, or had got a problem similar to mine, please write me here or at mail.
I can't publish the url, that I know would help a lot, since the company for which I work doesn't want it.
Thanks
Paolo
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hi friends
i want to know Why multiple Inheritance is not possible in C#?
thanks
pathan
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You can get the reason here[^]
Best Regards,
Apurva Kaushal
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Mainly a protection thing. It saves real programmers from beginners that misuse it.
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Hi there,..
I'm using ASP.NET2.0 and in my application in one textbox if i typed "><M" and press enter means, it shows error as "Unknown Application"..
Can any one plz give idea,..
Thks n Advance
Sam.M<u></u>
Regards n Thks
Sam.M
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Hi all,
I am using Gridview to display data.I have to add 5 checkbox columns and I have to save the checked and unchecked values of checkbox in DB.
I want to use Stored Procedure for the same.
Please help me...
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Hi..
U better go to this link "http://msdn.microsoft.com/msdnmag/issues/06/05/cuttingedge/default.aspx" and u can easily identify that..
Regards n Thks
Sam.M
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I'm creating an ASP.NET custom control that will display several LinkButton derived objects with a separator graphic between them. My problem is that I keep getting the following error message if I attempt to put in any LinkButton derived objects: Type 'Lux.Presentation.LuxControls.LuxLinkItem' in Assembly 'Lux.Presentation.LuxControls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' is not marked as serializable."
I'm not sure why it needs to be serializable. I can't find out any reason for this. So, I added the Serializable attribute and I get almost the same error again, but for the LinkButton class. Since the Microsoft control doesn't need to be serializable, I can't see why mine should need to be. I'm obviously missing some piece of the puzzle.
Here is what the code on the ASPX page looks like:
<Lux:LuxLinks ID="LuxLinks1" runat="server" SeparatorImageUrl="~/bullet.gif" Width="100%" >
<Items>
<Lux:LuxLinkItem runat="server" ID="lli1">First Link Button</Lux:LuxLinkItem>
</Items>
</Lux:LuxLinks>
Does anyone have any ideas? Is there anything I could try out?
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Do you add the controls to the viewstate? An object must be serializable to be saved in viewstate.
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Paddy Boyd wrote: Do you add the controls to the viewstate? An object must be serializable to be saved in viewstate.
 That makes sense. I've altered my Load and Save Viewstate methods and it works now. I was just dumping the items directly into the viewstate. I though it would automatically call Load/SaveViewstate as needed.
Thanks. I've got this working now.
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I have a grid view with some links to take you
to details of the item in the grid. On the details page is
a link to go back to the page containing the grid.
I want this link to return people to the same position
on the page like the back button does.
I can't use "javascript:history.back()" because if they sort items
on the details page it will no longer take them back to the grid but just 'unsort'
the current page.
I have anchors on the page which kind of work.
But they will always put the grid item at the top of the page,
And if they clciked it at the bottom it will be quite a different position.
Any ideas anyone?
Sorry this is a bit long.
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What you can do is pass the id of a control to your page in the querystring, or store as a session item or cookie or however you chose. Then in the codebehind on page load set focus to that control.
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Hello All,
I am using .NET v1.1 with SQL Server 2005. I have cofigured the application for SQL Server Session state management. However i am not able to pass the session variable between 2 domains.
I went through 'ASPStateTempSessions' table from tempdb and found the 'SessionItemLong' column to be NULL. I am storing int type data in session so all my values go into 'SessionItemShort' column. I found the 'TempGetStateItem' procedure gets the session value from 'SessionItemLong' column.
Can anybody suggest me a resolution to this issue?
Thank you,
Abhijit
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Yeah, store the session information in the database with your own code. You can create a table with fields and store each item seperately or you can store all the information as xml in one field. That should be easy enough.
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i need to know about how to use cssclass of web controls
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in html head part
use this line of code
<link rel="stylesheet" href="../App_Themes/Theme1/Format.css"(css path and name) type="text/css" />
anujsharma
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Hi,
Consider you have a style defined in CSS file.. something like:
.Style1
{
font: 12pt verdana;
font-weight:700;
color:orange;
}
you can then use the cssClass like:
TextBox id="TextBox1" ForeColor="Red" CssClass="Style1"
You can even make use of codebehind file if you want to change it during runtime..but it will be available only for server controls.
Hope this helps.
Thanks
Sameer
Sameer
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where i have to declare that.style1
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You can declare it either in .aspx or create a CSS file.
Thanks
Sameer
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ya i have done in the same way just i have right clicked the added one style sheet and i have changed the back color and some properties and changed in that cssclass property to that style sheet name it will not be changed
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Hi,
You probably might have missed the Style attribute, check the below code:
/*
.Style1 { FONT: 700 12pt verdana; COLOR: orange }
<asp:label id="Label1" style="Z-INDEX: 102; LEFT: 336px; POSITION: absolute; TOP: 160px" runat="server"
="" cssclass="Style1">Label
*/
P.s. this is just a fragment of code and you need to write this in .aspx page.
Hope this help.
Thanks
Sameer
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