Subscribe To Rss And Then Save The Content Into A Db?
Aug 5, 2010
I want to write a page that shows the content of an rss feed. But I dont want to show only the current rss info but also previous. In other words I want to store every rss feed from the second I will finish building this page. The old and bad method is to refresh every 1 min or so, and compare the rss list to the db list. The rsses that doesnt showen on the db will be inserted.This method looks bad to me and I want some automatic method. What I mean is that when a new feed is posted it will send it to me (as a subscriber) and then it will inserted into the db.
How do I do it? And how do I do it behined the seance (in the global.asax or something?)?
i can use javascript setInterval() (in combination with jquery ajax) to 'poll' the controller action in order to determine if something 'new' should be renedered onto the page. However, I'm not a huge fan of polling, especially when client browsers can be left unattended and are uneccessarily polling for changes.
Multiply that by the number of potential client machines that could be browsing the app and you get a feel for the scale of the issue with this approach. Now, in truth, this is EXACTLY the approach that I use to refresh certain page fragments on some ('read' - MANY!!) of my existing sites.
However, I'd like to know what the options are for subscribing in 'reverse' to events and having the controller 'know' about the client browser and any events that it is subscribed to and the controller then 'push' out the update to the client on a 'needs must' basis. Is this something that happens outside of the normal desktop events scenario?
how to go about retrieving data from another control by subscribing to an even and receiving back results at a later time. I'm trying to see if there is a way to have one web control (Main control), subscribe to an event in another web control (Search control), by maybe only sending in a method within the main web controls class. Once a query event occurs (via Button click) in the search web control, it sends back results to that original function in the Main Web Control (returning a datatable)
I think the goal is to have the search control be unaware of the main control and any specific methods or classes. Only have classes subscribe it it. Kind of like a top down process only. Is there any method that can work to accomplish this? I've looked into delegate methods and EventHandler (EventArgs) methods, but can't clearly see how this could apply.
I'm trying to use WCF Callback to implement publish/subscribe pattern. I would like to send the message from UserA to UserB or UserA to every clients at the moment. I got an example from here
In my app, I use asp.net as a client to connect wcf service instead and I found a problem when I subscrib to wcf service.
The wcf service does not hold any other clients object. So when I call GetAllClients(_guid), It will return only 1 client which is itself.
Here is the code in asp.net page (i put every control inside updatePanel)
[code]...
Is it possible to implement this publish/subscribe with asp.net and wcf callback? (I already tried on window app and it worked fine)If it is possible, how can I keep all clients that is connecting to WCF Service so I can use those GuId to call callback method.
IMPORTANT Can any body solve this one ?How to create page's Init, Load, PreRender etc. event handlers in VS 2008? When we double click on the page, it will create Page_Load event. How to create othere events of page? I am using c# in ASP.NET application. There is no Event tab in image.
I want to save the content in the HtmlEditor into database, I think I can't put "Editor1" as the parameter name of the UpdateParameters, so maybe I can use OnContentChanged for the HtmlEditor to save the content into Label "Settings2" and put "Settings2" as the Parameter Name. Something like:
How I can get the content of the web page using asp.net ? I want to store html code of one web site into the string variable how I can do this ? I mean there is web site I need to write a program to get the page and store it into string variable.
I am sending search request to server using html form element and in return i am getting xml file displayed in html page i want to save xml file [returned from server] in to variable.
this web application must scan any webpage and save result if some data has been changed.
it should to search for key words and seek if their values has been modifyed/changed.
i will create this application with asp.net mvc.
what should i use to scan some webpage? if i will insert in my page any url of page which i will to scan, what should happens? are they some robots which looking for it if some content changes?
How to save Ajax Editor content as an HTML file to a disk?
Let's say I have an Ajax Editor which allows user to type or paste in long message or writting. Once he clicks on "submit" button, an HTML file will be created and save to a disk. I am working on asp.net 3.5, ajax version 3.5 (from codeplex, work well).
I have html editor on page, ajax 3.5. I can save Editor.Content to xml file without problem, after I publish to server machine, It refused to work for me.
my page directive set to ValidateRequest = false and EnableEvenValidate = false and AutoEventWireUp = false, no UpdatePanel used around Editor and update button. on code behind which is button click event.
Dim docInfo.Load(Server.MapPath(xmlInfoFilePath)) docInfo As New System.Xml.XmlDocument() Dim ndInfo As System.Xml.XmlNode ndInfo = docInfo.SelectSingleNode("/info/business[@user='" & User.Identity.Name & "']") If ndInfo IsNot Nothing Then ndInfo.Attributes("description").Value = Editor.Content docInfo.Save(Server.MapPath(xmlInfoFilePath)) End If docInfo = Nothing
This button click generate an error on server side. I guess the problem Editor.Content have hidden tags, the server refuse to accept, but what is real problem.
I was going through an article on event bubbling in asp.net and came to know that although it is possible to subscribe to the click event of a user control's button from the containing page, "doing so would break some of the object oriented rules of encapsulation". A better idea is to publish an event in the user control to allow any interested parties to handle the event.
My question is that exactly how does a direct subscription to the button's click event from a containing page would break the object oriented rules of encapsulation?
My page (which basically contains a pair of Repeaters) renders and is displayed to the user.I'd like to have a "Download" button on the page which, when clicked, will propmt the user to save the page locally as an html file without losing any of the CSS formatting.
My CSS files are linked to via a Master Page.Currently, I have the button linked to some javascript that open will the Save As dialog, but all of the CSS formatting is lost, and it saves the page .I'm assuming that the button will need to open a new page which will re-create the data for the Repeaters and then save using StreamWriter, but I'm not exactly sure if that's right or how best to do it.
one button i use to save form entity.and other is to navigate to next pagwhen i click on save button i use jquery to save form entity in database. and form remains as it is
i have place some .txt files in my web application root directory. now i want to open a popup on button click with save button so that client can save this file on his/her PC. also can we auto set the path??? mean client jst press save button and file automatically stored his "D:\Foldersample.txt".
I have one AsyncFileUpload control ,one Attach button,one Listbox and Save button.
When Users browse the file and click the attach button, filename must be added to listbox. So in this way the user has the option to add upto multiple filenames to listbox. For this i have written the following code
[Code]....
this is source code
[Code]....
In Attach button click event i added the filename to listbox and saved the Asyncfileupload controls in different session variable.
When user clicks on save button all files has to be saved in application folder and for this i wrote the following code.
[Code]....
But iam unable to save all the files . Suppose i added two AsyncFileupload controls to session variables, only last file i,e. 2nd file can only be saved and couldn't get first file.
