What is the view state in Salesforce?
What is the 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.
How do I reduce view state 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 on a page.
- Refine your SOQL to retrieve only the data needed.
How do I enable view state in Salesforce?
How to enable view state in Salesforce
- Go to setup –> Administration Setup –> Manage Users –> Users.
- Select the user.
- Click ‘Edit’ button.
- Check the ‘Show View State in Development Mode’ checkbox.
- Click ‘Save’ button. Cheers!!!
How many records can be displayed on a Visualforce page What is the limit?
Visualforce Limits
| Limit | Value |
|---|---|
| Maximum rows retrieved by queries for a single Visualforce page request in read-only mode | 1,000,000 |
| Maximum collection items that can be iterated in an iteration component such as and | 1,000 |
What is the difference between Actionsupport and Actionfunction?
Action support adds AJAX support to another visualforce component and then call the controller method. Action function cannot add AJAX support to another component. But from a particular component which has AJAX support(onclick, onblur etc) action function can be called to call the controller method.
What is ViewState why ViewState?
What is viewState? 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.
How can you avoid maximum trigger depth exceeded?
To avoid these kind of situation we can use public class static variable. We can solve this issue, you can set a condition on trigger so it will not be called recursively.
What is heap size limit in Salesforce?
6MB
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.
How do I display more than 50000 records in Salesforce?
If you want to get roll up of more than 50,000 records then you can not use aggregate query as it limits to 2000 records only. If you want to use the custom calculation then there is limit that you can only query 50,000 records in one transaction. So the workaround is we can use @ReadOnly Annotation.
How do I display 50000 records in a VF page?
Parul
- You can enable readOnly attribute value true for the page it will increase Number of query rows from 50000 to 1 million rows and Number of records displayed on VF page will be increased from 1000 to 10000.
- You can go for pagination which has to limit.
What is AJAX in Salesforce?
AJAX is the art of exchanging data between server and client without reloading the complete web page. Visualforce and AJAX. Visualforce has inbuilt support for the AJAX. using the attribute “rerender” we can specify that where the response should be rendered.
What is remote action in Salesforce?
Remote action function in salesforce allows user to access any method from any class through javasrcipt methods, and get the result as a javascript object for further manipulation. It will works like whenever your are clicking the command button it will call the Javascriprt funtion.
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 do I maintain state in a Visualforce page?
To maintain state in a Visualforce page, the Lightning Platform platform includes the state of components, field values, and controller state in a hidden form element. This encrypted string is the view state and has a limit of 170KB.
What is an encrypted VIEWSTATE in Visualforce?
Viewstate data in encrypted and cannot be viewed tools like firebug. To maintain state in a Visualforce page, the Force.com platform includes the state of components, field values, and controller state in a hidden form element. This encrypted string is referred to as the view state and has a limit of 135KB.
What is the use of the viewviewstate?
ViewState holds state of the visualforce page that holds state that includes the fields, components and controller state.
