[Note] Tips/tricks: rewrite URLs in ASP. NET

Original article address:
Tip: override URL http://blog.joycode.com/scottgu/archive/2007/03/01/94004.aspx in ASP. NET

Method 1: Use the Request. PathInfo parameter instead of the query string
Method 2: Use HttpModule to implement URL rewriting
Method 3: Use HttpModule in IIS7 to rewrite a URL without an extension
Method 4: Use ISAPIRewrite in IIS5 and IIS6 to rewrite URLs without extensions
Process ASP. NET PostBack in URL rewriting
Correctly process CSS and image references

Routine URL rewriting scenario
Http://www.store.com/products.aspx? Category = books

Http://www.store.com/products.aspx? Category = DVDs

Http://www.store.com/products.aspx? Category = CDs

Method 1: Use the Request. PathInfo parameter instead of the query string

Http://www.store.com/products.aspx/Books

Http://www.store.com/products.aspx/DVDs

Http://www.store.com/products.aspx/CDs

Method 2: Use HttpModule to implement URL rewriting

Http://www.store.com/products/Books.aspx

Http://www.store.com/products/DVDs.aspx

Http://www.store.com/products/CDs.aspx

Method 3: Use HttpModule in IIS7 to rewrite a URL without an extension

Http://www.store.com/products/Books

Http://www.store.com/products/DVDs

Http://www.store.com/products/CDs

IIS 7.0 makes it easy to handle such situations. You can now execute an HttpModule anywhere in the IIS request pipeline, which means you can use the URLRewriter module above to process and override URLs without extensions (or even URLs. asp ,. php, or. jsp extension URL ). The following shows how to configure IIS7:

<? Xml version = "1.0" encoding = "UTF-8"?>

<Configuration>

<ConfigSections>
<Section name = "rewriter"
RequirePermission = "false"
Type = "Intelligencia. UrlRewriter. Configuration. RewriterConfigurationSectionHandler, Intelligencia. UrlRewriter"/>
</ConfigSections>

<System. web>
<HttpModules>
<Add name = "UrlRewriter" type = "Intelligencia. UrlRewriter. RewriterHttpModule, Intelligencia. UrlRewriter"/>
</HttpModules>
</System. web>

<System. webServer>
<Modules runAllManagedModulesForAllRequests = "true">
<Add name = "UrlRewriter" type = "Intelligencia. UrlRewriter. RewriterHttpModule"/>
</Modules>
<Validation validateIntegratedModeConfiguration = "false"/>
</System. webServer>

<Rewriter>
<Rewrite url = "~ /Products/(. +) "to = "~ /Products. aspx? Category = $1 "/>
</Rewriter>

</Configuration>

Method 4: Use ISAPIRewrite in IIS5 and IIS6 to rewrite URLs without extensions

Process ASP. NET PostBack in URL rewriting

This problem occurs when URL rewriting is used. The <form> Control shows that the URL is not the original requested URL (for example,/products/books ), instead, the URL (for example,/products. aspx? Category = books ). This means that when you make a postback to the server, the URL is no longer the one you used to clean up. In ASP. NET 2.0, you can use it to override the action attribute of the <form> control. Specifically, you can use the new ASP. NET 2.0 control adapter extension architecture to customize the control output and overwrite the value of the action property with the value you provide. This is not required in your. make any encoding changes on the aspx page, and add one in your/app_browsers folder. browser file, register and use a control adaptation class to output new action attributes.

Correctly process CSS and image references

When using URL rewriting for the first time, many people sometimes encounter a difficult problem, that is, they find that their images and CSS style sheet references sometimes stop working. This is because they have relative references to these files on HTML pages. When you start to rewrite the URL in the application, you need to realize that browsers often request files at different logical hierarchy levels layers, rather than what is actually stored on the server.

For example, if the/products. aspx webpage. the logo.jpg file in the aspx webpage has a relative reference, but it is referenced by/products/books. when the browser displays a webpage, it will send a request to/products/logo.jpg instead of/logo.jpg. To reference this file correctly, make sure that you use the root directory to restrict (root qualify) CSS and image reference ("/style.css" instead of “style.css "). For ASP. NET controls, you can also use "~" Syntax reference a file from the root directory of your application (for example, <asp: image imageurl = "~ /Images/logo.jpg "runat =" server "/> ).

Attachment:/Files/kiant/2010.05/UrlRewrite_HttpModule1.FormRewriter.cs.zip file for the attached CS version