Skip to main content

View State


“ViewState is used to retain the state of server-side objects between page post backs.”

  • ViewState is how ASP.NET Web pages persists data across requests.
  •  ViewState can be encrypted to address security concerns.
  •  ViewState values are accessible with the same page
  •  ViewState is a state management technique build in ASP.NET.
  •  ViewState basically maintains the state of the pages between postbacks.
  •  ViewState maintain the session within the same page.
  •  ViewState allows the state of objects to be stored in a hidden field on the page.

Where the viewstate is stored after the page postback?
Ans: ViewState is stored in a hidden field on the page at client side.  ViewState is transported to the client and back to the server, and is not stored on the server or any other external source.

How long the items in ViewState exists?
Ans: They exist for the life of the current page.

What is the lifespan for items stored in  the ViewState?
Ans: The items stored in ViewState live until the lifetime of the current page expires including postbacks to  same page.

View state is client-side or server side state management techenique?
Ans: View state is client-side state management techenique

How do you enable or disable a ViewState at the page level?
Ans: At the page level you can enable or disable ViewState using EnableViewState property of the page.

What is the name of the hidden form field in which ViewState of the page is saved?
Ans: __ViewState

Is ViewState of one page available to another page?
Ans: No, ViewState of a Page is available only in that page. You cannot access ViewState of one page from another page.





Labels:

Comments

Post a Comment

Popular posts from this blog

Connected and disconnected architecture in ADO.Net with Example

Connected Architecture of ADO.NET The architecture of ADO.net, in which connection must be opened to access the data retrieved from database is called as connected architecture. Connected architecture was built on the classes connection, command, datareader and transaction.  Connected architecture is when you constantly make trips to the database for any CRUD (Create, Read, Update and Delete) operation you wish to do. This creates more traffic to the database but is normally much faster as you should be doing smaller transactions. Disconnected Architecture in ADO.NET The architecture of ADO.net in which data retrieved from database can be accessed even when connection to database was closed is called as disconnected architecture. Disconnected architecture of ADO.net was built on classes connection, dataadapter, commandbuilder and dataset and dataview. Disconnected architecture is a method of retrieving a r...
37 comments
Read more

ASP.Net AJAX Interview Questions

What is Ajax? Ajax means " Asynchronous Javascript and XM L". Ajax represents a set of commonly used techniques, like HTML/XHTML, CSS, Document Object Model(DOM), XML/XSLT, Javascript and the XMLHttpRequest object, to create RIA's (Rich Internet Applications). ASP.NET AJAX update only a specified portion of data without refreshing the entire page. The ASP.NET AJAX works with the AJAX Library that uses object-oriented programming (OOP) to develop rich Web applications that communicate with the server using asynchronous postback. What are the different controls of ASP.NET AJAX? ASP.NET AJAX includes the following controls: ScriptManager ScriptManagerProxy UpdatePanel UpdateProgress Timer Describe the technology that makes up AJAX?   AJAX is based on the following web standards: XMLHttpRequest Object JavaScript HTML/DHTML DOM XML CSS What role does the ScriptManager play?   The ScriptManager manages all ASP.Net AJAX resour...
2 comments
Read more

HTTPHandler and HTTPModule in ASP.NET

If you want to implement pre-processing logic before a request hits the IIS resources. For instance you would like to apply security mechanism, URL rewriting, filter something in the request, etc. ASP.NET has provided two types of interception HttpModule and HttpHandler .   The web server examines the file name extension of the requested file, and determines which ISAPI extension should handle the request. Then the request is passed to the appropriate ISAPI extension.  For Example When an .aspx page is requested it is passed to ASP.Net page handler. Then Application domain is created and after that different ASP.Net objects like Httpcontext, HttpRequest, HttpResponse. HTTPModule: -    It's just like a filter. The Modules are called before and after the handler executes . -    HTTP Modules are objects which also participate the pipeline but they work before and after the HTTP Handler does its job, and produce additional serv...
124 comments
Read more