Updating is not supported by data source unless updatecommand

Rated 3.89/5 based on 796 customer reviews

If I update session state then should I lock it, too? 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. 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.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.Do not set Asp Compat to true if your page uses no COM objects or if it uses COM objects that don't access ASP intrinsic objects and that are registered Threading Model=Free or Threading Model=Both.Explain the differences between Server-side and Client-side code?

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.

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.

The controls can bubble up their event handlers, allowing the main Data Grid event handler to take care of its constituents. NET function executed on Mouse Over over a certain button. It's the Attributes property, the Add function of that property. Caching Output Caching: Caches the dynamic output generated by a request. Go back to Dbg Clr, choose "Debug Processes" from the Tools menu, and select "aspnet_wp.exe" from the list of processes.

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.

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?

Leave a Reply