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    Extracting links using Regular Expressions and VB.NET

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    This article explains another technique in Web Scraping, which has been an important function of search engine crawling - extraction of all links for any given URL. This is quite a simple procedure, especially when done using Regular Expressions. The HTML content from any given url is downloaded as a string, and all occurences of hyperlinks are extracted from it.
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    A sitemap is a list of pages available on a website. This was used to help visitors to provide an overall navigation of the website, but now sitemaps are mainly used for listing pages and their updates to search engines. Sitemaps are no more in HTML format, but in plain text format or commonly HTML.
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    The most common way to insert the image into the HTML Body of the email using IMG elements with SRC attribute set to an image uploaded on your website or any internet source. This works fine with all online webmails like yahoo, or gmail, or even on your Outlook when you are connected to internet. Due to security issues, such images will get blocked on the webmails or Outlook unless you authori...
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    Here is a very useful C# code snippet for generating random strong passwords. There are two code snippets provided here, one for generating a simple random password, and other for generating a strong password. The password is generated using upper case and lower case alphabets, numerals and special characters.
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    The Haversine formula is used for calculating the distance between two points on the globe. This function gives a nearly accurate distance value, and is used widely in GPS related calculations and for vehicle tracking. This article provides a code snippet for calculating distance between two points taking latitude and longitude values as example.
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    In the current web designing trend, the tableless web layouts are very popular and widely used. This article explains how to create tableless layouts using DIV elements. The technique very well substitutes the still commonly used layouts using tables and nested tables.
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    A shopping cart application would require to display the products in a multicolumn grid, rather than a straight down list or a table. The each item in a product grid would have a product photo thumbnail, name of the product, price (optional), as well as additional metadata like reviews, ratings, etc. This articles explains how to set up a product grid using ASP.NET ListView control and floating...
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    This article gives you a simple code snippet for validating an email textbox field using Regular Expressions. The javascript function is called on onblur event of the textbox, and it will not allow the user to leave the textbox without entering a valid email address. This may look like a disturbing feature, but I have added a simple check at beginning to skip this checkup if th...
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    my Question is how to tracking the vehicle in India map using C# programming Hint: I having Raw GPS Data
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    sir may name is nilesh gupta and i have developing a web site but the problem is hindi text font that is the hindi font not support the web page plz help me thanks
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    Uploading of images and resizing (scaling) of them is a very common utility application. Various applications for this function are - Photo thumbnails, profile photos, stock photograph images like Flickr, etc. The System.Drawing namespace provides a built-in thumbnail creation function, but here is a code snippet to resize images preserving its original aspect ratio, maintaining high qua...
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    When you want to save logs on your website for any events like visits, errors, etc., it would be good if you add the browser name also. In case of errors, this information will do great for you, because client-side script errors and malfunctions might be browser dependant, and you would have to really debug them on those browsers in some cases.
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    This article explains how to add a graphic visitor counter to your website by adding a simple ASPX webpage with few lines of programming. You'll no more be required to add a third party free graphic counter utilities for your ASP.NET web site.
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    Sending out emails is a common requirement in every web application. This could range from a simple Contact Us form, to daily digest email to all subscribers. In ASP.NET, System.Net.Mail namespace provides all necessary functions of sending emails. In earlier versions of .NET, System.Web.Mail, but the new namespace provides extensive and powerful interfaces for sending out emai...
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    This articles explains how to use the ASP.NET Membership and Roles features to control various parts of the page according the logged in user. By using these features, we can create templates for anonymous users, logged-in users, role-based templates, and also login and online status. Most simple case would be to display Login link when no user is logged in, and the same would turn as Logout li...
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    Web Scraping or Web Data extraction is a software technique for extracting information from web pages. There are different types of web scraping, and a most common one is the web crawling done by search engines. The text content of the website will be extracted from web pages, and will be indexed for searching. This article explains a simple method of extracting text content using C# and Regul...
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    As you parse the UserAgent string in the server-side VB.NET or C#.NET code, it is possible to parse it using T-SQL programming. This would be extremely useful when your web application is more SQL Server dependant - having most of the business logic as stored procedures and functions. The only difference here is, as in ASP.NET, the UserAgent string is not accessible directly inside T...
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    Google App Engine provides a Blobstore API that allows our app to serve 'Blobs' that are much larger in size say between 1 mb and 2 gb.Blobs are created by uploading a file through an HTTP request using a html form .When the form is submitted, the Google App Engine Blobstore creates a blob from the uploaded file returning the blob key that can be used to process the blob
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    With App Engine, we can build web applications using the Python/Java programming language, and  our application runs on Google's scalable infrastructure, and uses large-scale persistent storage and services. The Python Runtime Environment App Engine includes a simple web application framework, called webapp, to make it easy to get started.App Engine supports Python 2.5. Our app take adva...
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    The TechWorld is now traversing from HTML 4 to HTML 5 using great features and advantages of the later, but still a major share of web still relies on the former version to keep compatibility and to meet with greater number of incompatible of browsers still in use. HTML5/CSS3 is greatly picked by web enthusiasts and web designing companies, but yet not reached the commercial production in larg...
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    You don't always need to depend on online favicon designers to create a good favicon for your website. If website is an identity for you or your business, favicon or favorites icon or shortcut icon is an identity for your website. A favicon represents your website in almost all web 2.0 integrations and posts. 
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    More evidence of the "consumerization" of enterprise IT: On Monday, security firm RSA announced that it will release software designed to make an Android device provide two-factor authentication by serving as an RSA SecurID authenticator.
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     ESA has developed a new software that makes the entire library of images from the SOHO solar and heliospheric observatory available online to everyone, everywhere at anytime.
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    While debate rages on over the value of nonrelational, or NoSQL, databases, two case studies presented at a New York conference this week point to the benefits of using the MongoDB non-SQL data store instead of a standard relational database.
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    Firefox users have targeted by new scam that tries to load a user’s PC with fake antivirus software using a passably convincing version of the Windows Update page.
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    Fans of Linux, Microsoft and Macs used to be able to search for information about those topics on Google using specialized search tools that narrowed the results to a focused set of highly relevant Web sites.
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    Yahoo wants to help people find mobile applications and information about them. On Thursday, the company is unveiling a feature in its search engine called App Search, as well as application search tools for Android and iPhone devices called AppSpot.
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      The Co-CEOs of Research In Motion (RIM)don't seem to have any regrets about how the launch of its PlayBook was handled.
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    Mozilla is working on a project that will add PDF rendering to Firefox using HTML5 and JavaScript, eliminating the need for users to run Adobe's own plug-in.
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    Japanese video game developer Sega Corp said on Sunday that information belonging to 1.3 million customers has been stolen from its database, the latest in a rash of global cyber attacks against video game companies.
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    Adobe today is releasing its Flash Builder 4.5.1 development tool and Flex 4.5.1 framework, boosting mobile application development support.
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    Hi sarath,

    Greetings,

    I am trying to delete a file with 'E4' Command,But I am not able to delete it,I am getting 6985 Error(condition of use not satisfied),The command I am using is 00 E4 00 00 02 60 00,Could u plz help me in this regards.

    Thanks in Advance
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