Vb net combo box validating
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. 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. 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.That includes all COM objects written with Visual Basic 6.0.Asp Compat should also be set to true (regardless of threading model) if the page creates COM objects that access intrinsic ASP objects such as Request and Response.
Do they, for example, include the client's IP address or anything else that would distinguish the real client from an attacker? If an authentication cookie is stolen then it can be used by an attacker. NET just before it shipped, you need to set Smtp Mail's Smtp Server property to "localhost" even though "localhost" is the default. 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. Caching is a technique widely used in computing to increase performance by keeping frequently accessed or expensive data in memory. What does Asp Compat="true" mean and when should I use it?
In this example, it prevents caching of a Web page that shows the current time. 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.