Validating length of textbox in datagrid
First, it makes intrinsic ASP objects available to the COM components by placing unmanaged wrappers around the equivalent ASP. Second, it improves the performance of calls that the page places to apartment-threaded COM objects by ensuring that the page (actually, the thread that processes the request for the page) and the COM objects it creates share an apartment. NET request threads into single-threaded apartments (STAs).If those threads create COM objects marked Threading Model=Apartment then the objects are created in the same STAs as the threads that created them. The latter one allows you to write formatted output. Init () When the page is instantiated, Load() when the page is loaded into server memory; Pre Render() for the brief moment before the page is displayed to the user as HTML and Unload() when the page finishes loading. Are concurrent accesses by multiple requests executing on multiple threads a concern with session state? If I update session state then should I lock it, too? Validation controls perform input checking in server code. One, it's unlikely that two requests from the same user will overlap. NET locks down session state during request processing so that two threads can't touch it at once. NET that tests user input in HTML and Web server controls for programmer-defined requirements. Concurrent accesses aren't an issue with session state, for two reasons. 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.
That includes all COM objects written with Visual Basic 6.0.
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.
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.
After Authentication a user will be verified for performing the various tasks, It access is limited it is known as authorization. NET, contains entries that map ASAX files, CONFIG files, and selected other file types to an HTTP handler named Http Forbidden Handler, which fails attempts to retrieve the associated file. Register Startup Script is for returning blocks of client scripts, not packaged in functions.
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.