Shulou(Shulou.com)06/02 Report--

This article mainly introduces the relevant knowledge of the new features of NET 4.0. the content is detailed and easy to understand, easy to operate, and has a certain reference value. I believe you will gain something after reading this new feature of .NET 4.0. let's take a look at it.

.net Framework is an internal Windows component that supports the generation and running of next-generation applications and XML Web services. The upcoming .NET Framework 4.0 has many new improvements. This article will reveal three new features in .NET Framework 4.0: chart controls, SEO support, and ASP.NET 4 extensible output cache.

Chart control

Microsoft provides developers with a large number of freely downloadable chart controls that can be used in .NET 3.***SP.NET or WinForms projects. To use these controls in Visual Studio 2008 requires the installation of a plug-in that provides VS toolkit and intelligent integration capabilities. Now that these controls are integrated into. NET 4. 0, there is no need to download additional plug-ins. Samples Environment for MS Chart Controls provides examples of the use of these controls. The following is a screenshot of the operation of the example:

ASP.NET 4.0 SEO

Microsoft has released a SEO Toolkit and integrated it into IIS 7, which can also be run in IIS Manager. In addition to creating site maps and map indexes, the toolset can analyze sites from a SEO perspective and generate reports when SEO rule violations occur: create error descriptions and give tips for further improvements. These rules are: duplicate files, duplicate titles, no content, too much content, and so on. The toolkit analyzes the site from a performance perspective and identifies pages that run slowly or visit a lot of resources. We can also extend the toolset by adding custom rules.

Although the SEO Toolkit needs to run on IIS Manager, there is no need to install anything else on the server. In addition, it can analyze all Web servers on all operating systems. Scott Guthrie summarizes the new features in ASP.NET 4.0 that can further enhance SEO, as follows:

◆ Page.MetaKeywords and Page.MetaDescription

URL Routing support for ◆ ASP.NET Web Forms

◆ Response.RedirectPermanent ().

We can programmatically set the keywords and descriptions of the site through the MetaKeywords and MetaDescription properties of the Page class. Guthrie explains the significance of doing so:

Server-side controls in ASP.NET 4.0 use them when outputting portions of the page, which is useful for sites that use master pages-some of them are in .master files, which is separate from .aspx files that contain specific page content, and you can now set new MetaKeywords and MetaDescription properties in .aspx pages and automatically generate their values through controls in the master page. URL Routing converts the external URL to internal. In this way, the site can expose SEO-friendly URL, but can use different links internally. This is very useful for legacy sites.

We should use the Response.RedirectPermanent () method instead of Response.Redirect (), because the latter generates a temporary redirect, which causes the search engine to jump between multiple redirects, downgrading the page. Guthrie explains how RedirectPermanent () works:

ASP.NET 4.0introduces a new Response.RedirectPermanent (string url) helper method that can be redirected through a HTTP 301 (moved permanently) response. In this way, search engines and other user agents that can recognize * redirection will store and use the new URL associated with the content. Doing so will index the content of the page and increase the PR (Page Ranking) value of the search engine to the page.

ASP.NET 4.0output cache

Since 1. 0, ASP.NET has had an output cache to store pages and resources to provide faster response times, but the storage location can only be in memory. ASP.NET 4.0provides an extension point to add multiple caches to local / remote disks, databases, distributed cache engines such as velocity, memcached, and even the cloud.

This is the end of the article on "what are the new features of .NET 4.0?" Thank you for reading! I believe you all have a certain understanding of "what are the new features of .NET 4.0". If you want to learn more, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.