What is AutoPostBack in C#?
Autopostback is the mechanism by which the page will be posted back to the server automatically based on some events in the web controls. In some of the web controls, the property called auto post back, if set to true, will send the request to the server when an event happens in the control.
What is a page postback?
From Wikipedia, the free encyclopedia. In web development, a postback is an HTTP POST to the same page that the form is on. In other words, the contents of the form are POSTed back to the same URL as the form.
What is cross page posting?
Cross page posting means you are posting form data to another page. This is useful when you want to post data to another page and do not want incur the overhead of reloading the current page.
For which web controls the AutoPostBack property is set to true by default?
ASP.NET generates the _doPostBack() function automatically, provided at least one control on the page uses automatic postbacks. Any Control that has its AutoPostBack Property set to true is connected to the _doPostBack() function using the onclick or onchange attributes.
What is page load C#?
The Page object calls the OnLoad method on the Page object, and then recursively does the same for each child control until the page and all controls are loaded. The Load event of individual controls occurs after the Load event of the page. This is the first place in the page lifecycle that all values are restored.
Is not postback in C#?
IsPostBack is a property of the Asp.Net page that tells whether or not the page is on its initial load or if a user has perform a button on your web page that has caused the page to post back to itself.
How is cross page posting done?
Cross page posting is submitting the form to a different page. This is usually required when you are creating a multi page form to collect information from the user on each page. When moving from the source to the target page, the values of controls in the source page can be accessed in the target page.
What is ASP.NET page life cycle?
When an ASP.NET page runs, the page goes through a life cycle in which it performs a series of processing steps. These include initialization, instantiating controls, restoring and maintaining state, running event handler code, and rendering.
When to use page.ispostback and Autopost back?
when Page.IsPostBack = true means that there is some event fire on your page which either button click or anything which post your data to server and comes to the current page. AutoPost back allow you to post the page as soon as any change on that respective control
When to use Auto postback in textbox control?
Use the AutoPostBack property to specify whether an automatic postback to the server will occur when the TextBox control loses focus. Pressing the ENTER or the TAB key while in the TextBox control is the most common way to change focus.
What’s the difference between true and false auto postbacks?
The AutoPostBack property is used to set or return whether or not an automatic postback occurs when the user presses “ENTER” or “TAB” in the TextBox control. If this property is set to TRUE the automatic postback is enabled, otherwise FALSE. The default is FALSE. There is one event which is default associate with any webcontrol.
How does Ajax UpdatePanel help avoid full postback?
Ajax updatepanel will help us to avoid full postback of the page i.e., avoid refresh of the whole page content with postback and stop flickering of the page which is associated with a postback and allows only partial postbacks. By using Ajax updatepanel we can refresh only required part of page instead of refreshing whole page.