Call .ashx In A .ashmx?
Apr 9, 2010i have a handler(.ashx) that returns an html . i want to call the handler in .ashmx(webservice). how do i call it?
View 1 Repliesi have a handler(.ashx) that returns an html . i want to call the handler in .ashmx(webservice). how do i call it?
View 1 RepliesIs it possible to call a handler using javascript code? e.g. i have a handler deployed at this location http://mysitename.com/getMyData.ashx. Can I call this handler or just request it using javascript?
View 3 RepliesI have a admin page in asp.net that adds data to a database. This database is available as a JSON string to external websites, however, since it's a lot of data, the external websites cache this data locally.I want to be able to ping the external websites to let them know the data has changed so they can referesh their cache. I figure I can setup an ASHX handler that receives a parameter telling them what data has changed, so they can both delete that data and refresh it.The only part I'm not sure about is the best way to call this external page from my admin page. Do I just do a regular WebRequest and discard the result? or is there a simpler way to call a page from code when you don't need the response?
View 2 RepliesI got an ashx file to create an image. I am referencing it via web.config like this:
<add verb="*" path="captcha.ashx" validate="false" type="eVoila.Security.Captcha.CaptchaImageHandler, eVoila" />
My handler looks like that:
[Code]....
Actually the handler never gets called. I already searched the forums and tried some tips and hints. But nothing of that worked. Try to call the url via[URL]
Can u explain me what ASHX HttpHandler uses for?
View 7 RepliesThere is an ashx file containing "ProcessRequest(HttpContext context)" method which gets triggered automatically. When and how does it get fired?Another question, How can I get the current QueryString when I am inside this file? When I type "context.Request.QueryString" it says it's null or empty although the address have arguments.
View 1 RepliesI've got a simple ASHX handler that returns an dynamically generated image; the image is generated from a custom created class, and an object belonging to this class is passed to the handler using Session (I'd rather avoid using QueryString).The handler is used as the URL of an image on a ASP form which is very simple: a drop down list, a button and an image. Basically, depending on what the user selects from the list, the appropriate image will be generated once the button is pressed.
At the start the actual image has it's Visible property set to false; I don't want the handler to display anything before the data is all there.Once the button is pressed, the required Session parameter is added containing the necessary object, and the page is refreshed using Server.Transfer. When the Page_load method detects that the Session parameter has been correctly set, it sets the Visible parameter on the image to true.After that the handler fires up and generates the image.
So far so good... However, if the user now picks something different from the list and presses the button, despite the correct object being passed in the Session, the image won't be updated. In fact, the handler won't even fire up (if I put a breakpoint in there). I need to close the browser window and reopen it for it to work.Any ideas what could be the cause of such behaviour?I suspect the answer is very simple, and I just don't know something fundamental about ASP (or handlers)...
In my web application I use an ashx file to write a file to the browser. I've noticed that there's no compression over the .ashx file, but only over my .aspx files.
Is it possible to compress .ashx? And if it is possible, how?
Currently I use global.asax to handle the compression:
<%@ Application Language="C#" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.IO.Compression" %>
<script runat="server">
void Application_PreRequestHandlerExecute(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;.......
As you can see only files which inherit from 'Page' are compressed, and my ashx file is not of type Page. So I added a condition and now it works just fine:
if (!(app.Context.CurrentHandler is Page ||
app.Context.CurrentHandler.GetType().Name == "SyncSessionlessHandler" ||
app.Context.CurrentHandler is ViewMht // This is the type I had to add
) ||
app.Request["HTTP_X_MICROSOFTAJAX"] != null)
return;
What is the Difference betweeen axd and ashx handlers.
View 3 RepliesMy web site has a handler (FileDownload.ashx) that deals with all file download requests. I've recently migrated my site to ASP.Net 4.0, and it now uses routing extensively. Everything works fine when dealing with page requests (aspx), but it's not working with my handler - I encounter the following error:
Type '<snip>.Handlers.FileDownload' does not inherit from 'System.Web.UI.Page'.
This makes sense, as routing is only implemented in the page. So, my question is, what steps do I need to take to be able to use routing and my ASHX together? I want to be able to extract RouteData.Values from the url.
public class FileDownload : IHttpHandler
{
}
sitemap is at: http://localhost/scirranew/sitemap.ashx
<%@ WebHandler Language="C#" Class="SiteMap" %>
using System;
using System.Web;
[code]...
I would like to use Server.UrlEncode in .ashx.
I try with the following code.
HttpServerUtility ser = new HttpServerUtility();
ser.UrlEncode(pfile.FileName);
That's wrong but however I would like to use Server.UrlEncode so let know the way.
I have created webpage and I am calling it from Jquery function. Technically I am {info} is image button and I am replacing with it with aspx
.replace("${info}","/_layouts/webpage.aspx");
The web page is opening in new browser window. Is there any way that I could make it as pop up whereever I can place in the page. That is get rid off the toolbar address bar. It should look like a pop up.
I am using ashx to serve images from a database, is there anyway to have a user click on a link that allows them to download the file on the computer. (IE it shows the Save Dialog) Like you download a file.
View 2 RepliesI've been trying to use the jQuery plugin Colorbox to display images I have in my DB through an ashx file. Unfortunately it just spits a bunch of gibberish at the top of the page and no image. Can this be done? Here is what I have so far:
$(document).ready
(
function ()
{
$("a[rel='cbImg']").colorbox();
}
);
...
<a rel="cbImg" href="HuntImage.ashx?id=15">Click to see image</a>
UPDATE:
My ashx file is writing the binary out:
context.Response.ContentType = "image/bmp";
context.Response.BinaryWrite(ba);
If I access session variable in ashx handler through it is always null. How can I access the current user here.
public void ProcessRequest (HttpContext context) {
context.Session[UIConstants.SessionItems.ID] = Id;
}
i have a ashx file
this file return string (plain/text)
i want ro read this from another page
Like:
http://www.domain.com/My-ashx.ashx?q=1 (This URL Return One Line Plain/Text)
i have another page: http://www.domain2.com/default.aspx ( I want write string(Return From ashx file))
THere is an external ASHX url that dinamically generates an XML file.
I tried to parse this XML using the doc.Load("http://www.domain.com.br/asp.net/integration.ashx") but it haven't worked.
The same code above work fine if I use a XML file instead of ashx one.
I need to read the XML file generated by the ASHX one in order to integrate the websites.
I have ASP.NET page with an iframe on it for displaying some pdf reports on this page. When user select the report type from dropdown, I add the needed for report data into the ASP.NET Session and change the attribute "src" of the iframe to .ashx module address which generates the .pdf report.But if Adobe glug-in for viewing .pdf files in browser is not installed, browser proposes to save report file and name of the proposed file is "HandlerName.ashx".But I want to make the browser proposed to save the file with the name "Report.pdf".
View 3 RepliesWhat is the purpose of Handler (.ashx files) and what is the use ?
can i get any sample ?
what are the differences between .aspx and .ashx pages. I use ashx now when I need to handle a request that called from code and return with a response.
View 3 RepliesWhat the exact difference and complete between using ASHX and ASMX. What is the difference between them when using them to communicate with your database from Javascript.
View 1 RepliesIn a basic scenario where I have a GridView with files to download and link buttons to download them, is there any benefit at all for creating a custom http handler for streaming those files as opposed to simply streaming from the event handler of the download link button?
Edit: As some suggested code reuse would favor the handler, however it's not an issue in this particular case. The handler is also faster being that it avoids the page life cycle, however this slight performance improvement is probably not worth creating a handler for in my particular situation. The only thing that comes to mind now is (assuming using the same aspx page approach) whether there is any special consideration in a situation where the GridView is inside an UpdatePanel?
Is it possible, and if so how do you access the webpage from the webhandlers?
Basically, when i button is clicked i kick off some JavaScript, which then kicks off a C# webhandler which return data from the server. What i would like to do then is rather than feed it back to the JavaScript, id like to add a GridView directly to the webpage from the webhandler.
Equally, within the handler it would be incredible useful to be able to read values of dropdowns etc from the webpage.
I created an ASHX file and use it to handle async file uploads.Since the site might not be hosted on our servers, I want to check for write permissions and delete permissions and supply the end user (site content editor in this case) with an error they can deal with.
Im using uploadify for the upload, Im not sure, but I`m guessing this complicates the return of a message that can be shown on the page, but maybe not.