Empty, or to some other actual value, before it will compile in C#, or run without exception in VB. Net, set [a = “something”] before you attempt to do anything with it. Strings and some other CTS types have a misconception of being value types, like Integers, and they are not.A more complex example would be that you disposed of a class that maybe you use to access the database. But then, somewhere else, you tried to call a method of that class that used those objects that no longer exists.
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.Introduction Most of the questions and answers you likely have already read. Asp Compat is an aid in migrating ASP pages to ASPX pages.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.Every once in awhile, you come across this exception: System.