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What is IsPostback property in asp.net and how does it work?

Posted By :Virendra Dugar     Posted Date :November 26, 2009    Points :10   Category :ASP.Net 
IsPostBack property indicates that whether this is the first time user has requested fort the page or it is reloaded based on any response on postback.

This property checks for __VIEWSTATE or __EVENTTARGET parameter in Request object. if these parameters are absent that means it is requested for the first time and if these parameters are present then this request is not first request.

You can also find related Interview Question to What is IsPostback property in asp.net and how does it work?  below: 

What is isPostback property?

  
This property is used to check whether the page is being loaded and accessed for the first time or whether the page is loaded in response to the client postback.
Example:-
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How does CAS work?

  
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Explain about the readystate Property.

  
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Which property on a Combo Box do you set with a column name, prior to setting the Data Source, to display data in the combo box?

  
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What suites of the 2007 Microsoft Office system work with Office SharePoint Server 2007?

  
Office Outlook 2007 provides bidirectional offline Synchronization with SharePoint document libraries, discussion groups, contacts, calendars, and tasks.vabnix.page.tlMicrosoft Office Groove 2007, included as part of Microsoft Office Enterprise 2007, will enable bidirectional offline synchronization with SharePoint document libraries.Features such as the document panel and the ability to publish to Excel Services will only beenabled when using Microsoft Office Professional Plus 2007or Office Enterprise 2007.Excel Services will only work with documents saved in the new Office Excel 2007 file format(XLSX). (More...)

How do the sub sites work in SharePoint?

  
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