When to pass data from Visualforce to apex controller?
Some situations occur when we become unable to pass the data from visualforce page to apex controller directly. For example: Suppose you have three divs (todoDiv, doingDiv, doneDiv) that are showing some tasks through the List from apex controller.
How to pass data from JavaScript to apex controller?
Means we need to pass the array from javascript to apex controller in order to save it. 1.Create the element to get value from javascript and set value to controller : 2.Create a javascript function to retrieve the data from the visualforce page and to set it in .
How to pass variable from VF page to apex class?
First exception on row 0; first error: INVALID_EMAIL_ADDRESS, Email address is invalid: null: [toAddresses, null] This is not how you pass the value from VF page to a controller. You have just specified the Id of the component.
How to pass a value from Visualforce page to controller?
That value will be hard-coded in the VF page. The easiest way I’ve found to do this is using window.setTimeout () with an abitrary low delay value which calls an apex:actionFunction that rerenders a dummy apex:outputPanel within an apex:actionRegion.
How to update an attachment using APEX controller?
Can anyone tell me how to retrieve an attachment to a visualforce page and update it . Thanks in advance. Tryout the sample code given below : List lstDoc = Database.query (‘SELECT d.Id, d.Name, d.Body, d.ParentId FROM Attachement d WHERE d.Name Like \\” + Userinfo.getUserName () + ‘%\\”);
How to update particular record in Visualforce page?
For a single update button, you can use apex:commandButton action=”{!updateRecord}” value=”Update” location=”top”. The location attribute value can either be top or bottom. If you need to update only one record, enter the new value for the record leaving the others untouched and click the Update button.