How can we pass Parameter from one Vf page to Another Visualforce page in Salesforce?

Hi suraj,

Step 1: Create a Visualforce page called SamplePage1....

<apex:page >
<apex:outputlink value="/apex/SamplePage2"> Click Here <apex:param name="msg" value="success"/> </apex:outputlink>
</apex:page>

Step2: Create a Visualforce page called SamplePage2

<apex:page controller="Sampleclass"> </apex:page>

Step 3: On SamplePage1 Click on the " Click Here" link. You will see that when you click on the link you will navigate to the SamplePage2. Check the URL now..
https://na5.salesforce.com/apex/SamplePage2?msg=success

You can see that the parameter " msg" with value "success" has been passed to the new page.
Pagereference().getParameters().put()

PageReference is a type in Apex. Read the documentation here.
When you click a command button or a command link in a visualforce page, you call a method. The return type
of this method would be a PageReference meaning that, after clicking the button the user will be redirected to a
new Page. Below is a sample code, which shows how to pass parameters from a PageReference

public Pagereference gotonewpage()
{
PageReference pageRef = Page.existingPageName;
pageRef.getParameters().put('msg','success');
return PageRef
}
existingPageName - actual name of a visualforce page
Retrieve Parameter Values in Apex Class:
The Apex Class code would be

public class Sampleclass
{
Public String message = System.currentPagereference().getParameters().get('msg');
}

So now, the variable "message" would store the value of your parameter "msg"....

Thanks.