.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Register
 
Win Surprise Gifts!!!
Congratulations!!!


Top 5 Contributors of the Month
david stephan
Post New Web Links

RegEx Request : Get all the tag in a webpage.

Posted By:      Posted Date: October 07, 2010    Points: 0   Category :.NET Framework
 
Hello,

How do I get all the <img src=" "> tags on a web page. Includes the value of the src. I need to in my C# application. I want to grab a webpage and parse the page to get only all the <img src=""> tags and put it in an array or in a database. I want to check the <img src='"> tag of two pages and check if they are similar or not. If not, error or prompt will occur.  

Please help.

Thanks and more power.





View Complete Post


More Related Resource Links

RegEx Request : Get all the tag in a webpage.

  
Hi! I have used Regular Expression(?<=img\s+src\=[\x27\x22])(?<Url>[^\x27\x22]*)(?=[\x27\x22]) to get about content of src tag.  For this case:    - Example: <img src="/vasep/Data/Sites/1/picture002.jpg" alt="hhhh" title="hhhhh" width="550" height="412" />        Regular Expression is true. I get content of src tag. But!! For this case:  -  Exmple: <img title="hhhhh" src="/vasep/Data/Sites/1/picture002.jpg" alt="hhhh"  width="550" height="412" />      Regular Expression is false. I do not get content of src tag.Please help me!

RegEx Request - Extract an tag from string...

  
Hello, Can anyone give me a regular expression that will extract the <img> tag from a string.  I am receiving descriptions from an rss feed and the description contains an <img> tag in the text.  I want to extract the <img> so that I can display it in a different location on my page. I have fooled with some regular expressions, but my knowledge of them is not very good. Thanks in advance for any help!!

How to identify user request particular webpage

  

HI Friends,

 

i have a scenior,

 

when First user request the webpage called for ex(http://xxxx.aspx) page,at the same time

 

when the second user request the same page (http://xxxx.aspx).

 

i have to get the message "Already User is using this page try after some time ".

 

could any one help me .

 

 

 

 


FORMAL REQUEST TO THE MICROSOFT DYNAMIC DATA TEAM

  

Dear gentlemen and ladies of the Microsoft Dynamic Data Team,

Mr. Steve Naughton says (and I hope so) that there might be chances that you read the posts published in this forum: I really hope so.

If that were the case then I am formally requesting to you in providing a "real answer" to my question:

I want to customize a dynamic data page (the details one) so I can have access to the data it has been already gathered from the end user UI (details.aspx) and use it to pass this same data to the following controls/pages that I am going to display next time to the end user.

For instance:

I have a screen with different types of data in it: texts, numbers, dates, check boxes, radio buttons and dropdownlists that has been filled with data by the end user. I want now to reset all fields exept the dropdownlist of which I'd like to keep the previously chosen values(the very same thing you do between dropdownlist of List.aspx ad Details.aspx). Even with FoxPro I could do that because data and controls were available there. It was as simple as setting carrying on to true.

HOW DO YOU DO THAT? HOW CAN I IMPLEMENT THE SAME LOGIC AMONG THE CONTROLS OF MY DETAILS PAGE? BUT I DO WANT TO HAVE ACCESS AND PASS DATA FOR SPECIFIC CONTROLS:DROPDOWNLISTS (mostly).

I have found my

view state vs request parameters

  

If  the view state is the data entered into the form fields then they are supposed to be available in the request parameters or request body. Then why would we need view state for?


Thanks.



Unique ID throughout entire request

  

Greetings,

I am hoping somene here could advise me on a better solution to my present problem.  First a little background information on the application. 

I have a web application using the 3.5 framework.  The structure of this application is as follows: UI -> WebService   -> Business Layer -> DataAccess Layer.   What I want to accomplish is for every request (click on a link or button) have a unique identifer that follows this request through its entire lifecycle.  This unique identifer can be accessible anywhere within this request.  We use Response.Redirects which could easily be changed to Server.Transfers (although I do not want to do that) but  the problem lies with the web service calls.  Currently, a GUID is set in the ApplicationRequest.  This GUID checks for a guid value in the RawURL and if so, assigns this value to a HttpContext Item.  If not, HttpContext.Items gets a new one created.  However, this idea is wrong and will need to be revisisted.  The bigger problem is with the web service calls.  Without changing every web service method signature, and every call for that matter, is there a way of getting this GUID there.  I created a web method in every web service so that each time I instantiate a web service object in the UI, before calling any

Custom views on .aspx webpage

  

Hi again, i have a client that needs me to create a custom view on thier webpage similar to Microsoft Word.

It goes about that, when I click on an image it redirects me to another page and must create a custom view for a certain paragraph on that page. I am not sure how to do this and wonder if anyone knows how.

I am using C# programming language if that helps at all. I Heard that using javascript would work but i dont know javascript yet so is there any alternative?


System.Security.SecurityException: Request for the permission of type 'System.Web.AspNetHostingPerm

  

Good Day all,

Having an issue with an outside user accessing my IIS7 box. I do not have this problem when running the website from my host machine. I found this post: Http://forums.asp.net/t/1371394.aspx. I assure you that this is not a solution because I am not storing any of my files on a network share. 

What do you think my approach should be. 


I already have read rights to IIS user to my BIN folder. 


Thanks for the help. 


IIS request filtering module

  

Hi folks,

I have migrated my web application to iis 7.5 Now I am using windows 7 as dev machine.

the problem is it takes several seconds to download a single page into web browser now. It contains only 300 records.

Everything is ok on prod website though. Prod version contains up to 200000 records .I can't also use code profile tool of red gate to analyze possible bottlenecks since the software in question can't restart IIS. No errors in IIS logs. I am using ISAPI Rewrite 3 filter by Helicon to apply some URL rewriting rules. I am thinking about conflict between ISAPI rewriting rules and default IIS 7.5 request filtering rules, since the IIS request filtering module gets a higher priority than even the built-in IIS 7.5 rewriter module. Is it possible to tweak the module through web.config so that priority is given to ISAPI rewriting rules or something like that?

Frankly, I spent several days to figure out solution. No success...

I've also deployed the application on IIS 5.1. Everything works fine. Any ideas about possible solution for IIS 7.5?


How to implement custom HttpContext for each request under class that implements IHTTPHandler

  

Hello All,

I created an application and implemented IHTTPHandler for all incoming request ending with ".aspx" extension.

Under "ProcessRequest" module, I am creating an instance of HttpContext (with URL attributes different from my application's URL i.e. if I am working on localhost then speciying Yahoo.com as its URL) and assigning it to "context" which comes as method argument.

After redirection, an error is generated. Also, the custom HTTPContext is not passed to the requested page (default.aspx, in my case.)

Code is as follows.

    Public Sub ProcessRequest(ByVal context As System.Web.HttpContext) Implements System.Web.IHttpHandler.ProcessRequest
        Try
            Dim requestedUrl As String
            Dim targetUrl As String
            Dim urlLength As Integer
            'Save settings which will be used while redirecting to appropriate page
            requestedUrl = context.Request.RawUrl
            If requestedUrl.IndexOf("?") >= 0 Then
                targetUrl = requestedUrl.Substring(0, requestedUrl.IndexOf("?"))
            Else
                targetUrl = requestedUrl
            End If
            If targetUrl = Nothing Or targetUrl.Length = 0 Then
                targetUrl = requestedUrl
            End If
            urlLengt

Regex pattern for validating IPv6

  

Can anyone can make a regular expression pattern for validating IPv6 (not IPv4)?

Ipv6 has many formats and aliases. I tried making the pattern but written in a lot of codes (i'm not sure my code below will be 100% accepting valid formats and 100% declines invalid formats).

(([0-9a-fA-F]{1,4}:){1,1}(:[0-9a-fA-F]{1,4}){1,6})
|
(([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5})
|
(([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4})
|
(([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3})
|
(([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2})
|
(([0-9a-fA-F]{1,4}:){1,6}(:[0-9a-fA-F]{1,4}){1,1})
|
((([0-9a-fA-F]{1,4}:){1,7}|:):)
|
(:(:[0-9a-fA-F]{1,4}){1,7})
|
(((([0-9a-fA-F]{1,4}:){6})(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}))
|
((([0-9a-fA-F]{1,4}:){5}[0-9a-fA-F]{1,4}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}))
|
(([0-9a-fA-F]{1,4}:){5}:[0-9a-fA-F]{1,4}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})
|
(([0-9a-fA-F]{1,4}:){1,1}(:[0-9a-fA-F]{1,4}){1,4}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})
|
(([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,3}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})
|
(([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,2}:(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3})
|
(([0-9

Test Run: Web Application HTTP Request-Response Test Automation with JavaScript

  

Write a simple browser-based request-response test automation using JavaScript that's platform independent and useful when you are working in a highly dynamic environment.

James McCaffrey

MSDN Magazine January 2010


Test Run: Request-Response Testing With F#

  

This month we show you how to use F# to perform HTTP request-response testing for ASP.NET Web applications.

James McCaffrey

MSDN Magazine July 2009


Test Run: Request/Response Testing with Windows PowerShell

  

Did you know you can use Windows PowerShell to perform lightweight request/response testing for an ASP.NET Web app? Here's how.

Dr. James McCaffrey

MSDN Magazine May 2008


HTTP Pipelines: Securely Implement Request Processing, Filtering, and Content Redirection with HTTP

  

ASP.NET is a flexible and extensible framework for server-side HTTP programming. While most people think of ASP.NET in terms of pages served, there is a lower-level infrastructure sitting beneath this page model. The underlying plumbing is based on a pipeline of app, module, and handler objects. Understanding how this pipeline works is key if you want to get the most out of ASP.NET as an HTTP server platform, while making your process more efficient, and keeping your server secure. This article introduces the architecture of the pipeline and shows how you can use it to add sophisticated functionality to an ASP.NET-based app.

Tim Ewald and Keith Brown

MSDN Magazine September 2002


Categories: 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend