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.
A custom client control is used in Windows Forms applications. NET: A user-authored server control that enables an ASP. Authentication cookies issued as session cookies, do, however, include a time-out valid that limits their lifetime. If you place the following VSDISCO file in a directory on your Web server, for example then it returns references to all ASMX and DISCO files in the host directory and any subdirectories not noted in How does dynamic discovery work? NET maps the file name extension VSDISCO to an HTTP handler that scans the host directory and subdirectories for ASMX and DISCO files and returns a dynamically generated DISCO document. Discovery Request Handler and granting the ASPNET user account permission to read the IIS metabase.
If the user is working with a browser that supports DHTML then the validation controls can also perform validation using a client script. Session state is locked down when the Http Application instance that's processing the request fires an Acquire Request State event and unlocked when it fires a Release Request State event. NET forms authentication cookies provide any protection against replay attacks?
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.
The following directive sets Asp Compat to true: Setting Asp Compat to true does two things.
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).
In this example, it prevents caching of a Web page that shows the current time.For these you need to make custom components usually in VB or VC .Client-side scripting means that the script will be executed immediately in the browser such as form field validation, clock, email validation, and so on.Also possible security hazards for the client computer. How is this technology different than what is available though ASP? Web Forms are similar to Windows Forms in that they provide properties, methods, and events for the controls that are placed onto them. Besides making it difficult to maintain your transactional integrity, Response. Sure, there are workarounds, but they're difficult. Redirect necessitates a round trip to the client, which, on high-volume sites, causes scalability problems. How can you provide an alternating color scheme in a Repeater control?What type of code (server or client) is found in a Code-Behind class? Should validation (such as did the user enter a real date) occur server-side or client-side? Client-side validation because there is no need to request a server-side date when you could obtain a date from the client machine. However, these UI elements render themselves in the appropriate markup language required by the request, for example HTML. NET then you will also get the familiar drag-and-drop interface used to create your UI for your Web application. Alternating Item Template Like the Item Template element, but rendered for every other row (alternating items) in the Repeater control.