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What is AutoPostBack?To understand AutoPostBack, we need to know what postback is.So, what is AutoPostBack, AutoPostBack is a mechanism (automatically sends a page back to the server based on some of the events of the Web control)

For example, the Add method of a user Class, returns the user object instance in case of success, returns false in case of failure and can get the reason string of failure by the GetError method .... Speaking of which, I seem to understand that the Add method should always return the user object, or throw an exception? But in that case, there's no difference in the amount of code they have. The problem is that even if there

more conducive to scaling on demand, according to your needs for deployment. The transaction layer is responsible for atomicity, consistency, and isolation, but does not care about persistence. This also means that the transaction layer is in memory, it runs fast, anything can fail, and no data or consistency is lost at any time. The transaction layer

elements.As Taylor has already said, Dom appeared before IE4. When you use IE4, any scripting language that runs in IE4 can change any element of the Web page.(Although the DOM usage rights in Netscape are limited to the IE4, you can place the content you want to change in a layes (layer), and change the layers to alter what you want to change.) and Netscape claims that his future browsers will better support the DOM standards of the consortium.There

What is CACHESTORES often seen in SQL Server? When we execute the following SQL statement in SSMS to clear the SQL Server cache, we will see some information in SQLERRORLOG DBCCFREEPROCCACHE. You can see the terms cachestore, objectplans, sqlplan, boundtress, and other terms cachest. I often see cache stores in SQL Server. Why? When we execute the following SQL statement in SSMS to clear the SQL Server cach

1. What is node. jsnode. JS is a back-end JavaScript runtime environment (supported systems include *nux, Windows), which means you can write system-level or server-side JavaScript code.node. js is lightweight and efficient with event-driven, non-blocking I/O models, making

impression. Win 2000 uses a newer version of the NTFS file system?? NTFS 5.0, which enables users to operate and manage computers as quickly and easily as win 9X, while also enjoying the system security that NTFS brings. 　　The features of NTFS 5.0 are mainly embodied in the following aspects: 1. NTFS can support partitions (if a dynamic disk is called a volume) size can reach 2TB. The maximum size of the FAT32 support partition in Win 2000

lack operational tools such as event monitoring and diagnostics, because failure events can be handled proactively and quickly without the support of efficient management tools. There are many operational monitoring tools on the market, such as the commercial version ofCisco Works,Solarwinds,ManageEngineand focus on fault monitoringWhatsUp, in the Open source field hasMRTG,Nagios,Cacti,Zabbix, Zenoss,OpenNMS,Gangliaand so on. Because they are not con

synchronization method than a mutex The acquisition of the lock in the critical section is called entering the critical zone; And the release of the lock is called leaving the critical section. Differences (with semaphores and mutexes) Mutexes and semaphores are visible in any process of the system; In other words, a process creates a mutex or semaphore, and another process attempts to acquire the lock

What is the difference between multi-thread communication and multi-process communication in Android? How to implement them ?, Android Multithreading 　　When a program is started for the first time, Android starts a LINUX Process and a main thread. By default, all components of the program will run in the process and thread. In addition, Android assigns a LINUX Us

When I first started JavaScript, I always heard about the framework. After learning JQ, I will know what the framework is. Here is a reprinted article.ArticleHope it will be helpful to the confused kids shoes. [From] http://www.ibm.com/developerworks/cn/web/wa-jsframeworks/ What

Just beginners, you will always hear about the framework of some things. I don't know what a frame is until I finish JQ. It is a reprint of an article, hope that the children are still confused a little help. What is a JavaScript framework? JavaScript itself

AuthorJonathan AllenTranslatorYao Qilin After the term "View-model" emerged, many developers have many questions. View models need to deal with the intersection of views, models, and external services. This is clear, but accurate practices are often taken over. What should it contain, what should it not contain, and there is