The view state is an encrypted field that contains the following data:
- All of the non-transient data that is in the associated controller and any associated controller extensions
- State related to all of the form elements and components that are used on the page.
- Finally there’s some sort of internal state that Salesforce doesn’t provide much information about.
Table of Contents
What is a view state in Salesforce?
View state holds the state/size of the visual force page that includes the components, field values, and controller state. This is important in the light that salesforce provides only a standard size of 135kb for any individual page. If the size of a particular page exceeds 135kb, the page will throw a view state error.
How many view states are created per page in Salesforce?
However from Summer 12 release only one View State will be created per page. View State is encrypted and transferred to client with each response. View State cannot be viewed with tools like firebug however salesforce has “View State Inspector” to check the View State Data.
How to view view state in Salesforce with Firebug?
View State cannot be viewed with tools like firebug however salesforce has “View State Inspector” to check the View State Data. All public and private data members present in Standard, Custom and Controller extensions.
How to optimize the size of a view state in Visualforce?
A small amount of data for Visualforce to do housekeeping. Developer environments have a view state inspector, which lets you view the contents of the view state. This information can help you in optimizing the view state size. Once enabled, it shows up as a tab in Development Mode, as follows. you can enable that from
How do I fix viewstate error in Salesforce?
In order to reduce the view state, make use of the following:”Transient” keyword – to declare instance variables that can’t be saved, and shouldn’t be transmitted as part of the view state for a VF page. … Minimize the number of forms i.e
How do I view viewstate in Salesforce?
View State TabFrom your personal settings, enter Advanced User Details in the Quick Find box, then select Advanced User Details. No results? … Click Edit.Select the Development Mode checkbox if it isn’t selected.Select the Show View State in Development Mode checkbox.Click Save.
What is view state apex?
The view state of a web page is composed of all the data that’s necessary to maintain the state of the controller during server requests (like sending or receiving data).
What is view state size in Salesforce?
Salesforce allows Visualforce pages to have a maximum view state size of 170KB. The View State tab shows you which elements on your page are taking up that space. A smaller view state size generally means quicker load times. In order to avoid this error, minimize your pages’ view state.
What is viewstate VF page?
View state holds the state/size of the visual force page that includes the components, field values, and controller state. This is important in the light that salesforce provides only a standard size of 135kb for any individual page.
What is a future method?
A future method runs in the background, asynchronously. You can call a future method for executing long-running operations, such as callouts to external Web services or any operation you’d like to run in its own thread, on its own time.
What is heap size limit in Salesforce?
Salesforce enforces an Apex Heap Size Limit of 6MB for synchronous transactions and 12MB for asynchronous transactions. The “Apex heap size too large” error occurs when too much data is being stored in memory during processing.
What is the difference between Actionsupport and Actionfunction?
Action function can call the controller method from java script. 2. Action support adds AJAX support to another visualforce component and then call the controller method. Here action support adds AJAX to output panel, so once you click on output panel controller method will be called.
What is transient keyword in Salesforce?
A common use case for the transient keyword is a field on a Visualforce page that is needed only for the duration of a page request, but should not be part of the page’s view state and would use too many system resources to be recomputed many times during a request.
What is difference between transient and static?
The main difference between the two ( static versus transient ) is that static variables exist only once per transaction, but transient variables can exist many times. In other words, static variables have a global scope, while transient variables have a local scope.
What is limit in SOQL?
LIMIT is an optional clause that can be added to a SELECT statement of a SOQL query to specify the maximum number of rows to return. The syntax for LIMIT is: SELECT fieldList FROM objectType [WHERE conditionExpression] [LIMIT numberOfRows]
What is actionSupport in Salesforce?
actionSupport component adds AJAX support to other components in visualforce. It allows components to be refreshed asynchronously by calling the controller’s method when any event occurs (like click on button). It allows us to do partial page refresh asynchronously without refreshing full page.
What does “recreate state” mean in Salesforce?
Recreate state instead of saving in Viewstate. Means if you can use SOQL instead of saving in some object or List, use it. You can also use Web service call, Ajax Remoting to recreate state instead of saving in Object. You can also read this article on Salesforce blog which explains ViewState Mechanism.
Is HTTP stateless?
As we know that http protocol is stateless protocol. Unlike Other programming languages like Java and C# the variables, objects are persisted between different method and network calls. However in case of server client model, the server only stores the session related information of client, however it does not stores the temporary data being used by the clients. Sometime hidden field values, IDs and other information are needed by server for processing.
Is the variable B visible in Visualforce?
Variable “b” is private, that means it is not accessible in Visualforce page however it will be available in View State. variable “d” is not initialized in constructor and hence it is not visible in view state. The Opportunity object have only those fields which was initialized in code.
Transient Keyword – View State – Visualforce – Salesforce
ViewState holds state of the visualforce page that holds state that includes the fields, components and controller state. Viewstate data in encrypted and cannot be viewed tools like firebug. There is a limit of 135KB of view state.
View State in salesforce
ViewState holds state of the visualforce page that holds state that includes the fields, components and controller state. Viewstate data in encrypted and cannot be viewed tools like firebug. There is a limit of 135KB of view state.
