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By locking application state before updating it and unlocking it afterwards, you ensure that another request being processed on another thread doesn't read application state at exactly the wrong time and see an inconsistent view of it. The latter positions script blocks near the end of the document so elements on the page that the script interacts with are loaded before the script runs. Persistent authentication cookies do not time-out and therefore are a more serious security threat if stolen. Note that VSDISCO files are disabled in the release version of ASP. You can reenable them by uncommenting the line in the section of Machine.config that maps *.vsdisco to System. Is it possible to prevent a browser from caching an ASPX page? NET can detect when a form is requested for the first time versus when the form is posted (sent to the server), that allows you to program accordingly. Custom controls A control authored by a user or a third-party software vendor that does not belong to the . This is a generic term that includes user controls. So a stolen session cookie can only be used in replay attacks as long as the ticket inside the cookie is valid. You can change that by modifying the timeout attribute accompanying the element in the Machine.config or a local Web.config file. Mail Message and Smtp Mail are classes defined in the . A client who requests a VSDISCO file gets back what appears to be a static DISCO document. However, Microsoft is actively discouraging the use of VSDISCO files because they could represent a threat to Web server security. For caching the entire page the page should have Output Cache directive. Authentication is the process of validating a user on the credentials (username and word) and authorization performs after authentication. Note: A few of the references are were taken from other sites/sources. NET application that wasn't written with Visual Studio. Be sure to enable debugging in the ASPX file before debugging it with Dbg Clr. NET to build debug executables by placing a: section of Machine.config, which holds the master configuration settings for ASP. Register Client Script Block is for returning blocks of client-side script containing functions. Culture What's the difference between Codebehind="My cs" and src="My cs"? Some times it is useful to cache the output of a website even for a minute, which will result in a better performance. Net provides a cache object for eg: cache["States"] = ds States; What do you mean by authentication and authorization? NET Framework SDK, open the file containing the code you want to debug, and set your breakpoints. (If "aspnet_wp.exe" doesn't appear in the list then check the "Show system processes" box.) Click the "Attach" button to attach to "aspnet_wp.exe" and begin debugging. Page Where do you store the information about the user's locale? You can modify it by editing Machine.config or including a section in a local Web.config file. In other words, code that's to execute when the page is loaded.
If I update session state then should I lock it, too? The controls can bubble up their event handlers, allowing the main Data Grid event handler to take care of its constituents. NET function executed on Mouse Over over a certain button. It's the Attributes property, the Add function of that property. Caching Output Caching: Caches the dynamic output generated by a request. Go back to Dbg Clr, choose "Debug Processes" from the Tools menu, and select "aspnet_wp.exe" from the list of processes. When you have a complex control, like Data Grid, writing an event processing routine for each object (cell, button, row and so on) is quite tedious. Add("on Mouse Over","some Client Code();") What data type does the Range Validator control support? In the context of a web application, caching retains the pages or data across HTTP requests and reuses them without the expense of recreating them. NET has 3 kinds of caching, strategies Output, Caching Fragment and Caching Data.The purpose of this article is to consolidate most of the study material related to . It defaults to false but should be set to true in any ASPX file that creates apartment-threaded COM objects; that is, COM objects registered with Threading Model=Apartment. What does Asp Compat="true" mean and when should I use it?