Force.com Apex Code Developer's Guide

Getting Started
Writing Apex
Ways to Invoke Apex
Finishing Touches
Reference
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
ConnectApi Namespace
Database Namespace
Datacloud Namespace
DataSource Namespace
Dom Namespace
Flow Namespace
KbManagement Namespace
Messaging Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
Schema Namespace
Search Namespace
Site Namespace
Support Namespace
System Namespace
Address Class
Answers Class
ApexPages Class
Approval Class
Blob Class
Boolean Class
BusinessHours Class
Cases Class
Comparable Interface
Continuation Class
Cookie Class
Crypto Class
Custom Settings Methods
Database Class
Date Class
Datetime Class
Decimal Class
Double Class
EncodingUtil Class
Enum Methods
Exception Class and Built-In Exceptions
FlexQueue Class
Http Class
HttpCalloutMock Interface
HttpRequest Class
HttpResponse Class
Id Class
Ideas Class
InstallHandler Interface
Integer Class
JSON Class
JSONGenerator Class
JSONParser Class
JSONToken Enum
Limits Class
List Class
Location Class
Long Class
Map Class
Matcher Class
Math Class
Messaging Class
MultiStaticResourceCalloutMock Class
Network Class
PageReference Class
PageReference Constructors
PageReference Methods
getAnchor()
getContent()
getContentAsPDF()
getCookies()
getHeaders()
getParameters()
getRedirect()
getUrl()
setAnchor(anchor)
setCookies(cookies)
setRedirect(redirect)
Pattern Class
Queueable Interface
QueueableContext Interface
QuickAction Class
RemoteObjectController
ResetPasswordResult Class
RestContext Class
RestRequest Class
RestResponse Class
Schedulable Interface
SchedulableContext Interface
Schema Class
Search Class
SelectOption Class
Set Class
Site Class
sObject Class
StaticResourceCalloutMock Class
String Class
System Class
Test Class
Time Class
TimeZone Class
Trigger Class
Type Class
UninstallHandler Interface
URL Class
UserInfo Class
Version Class
WebServiceCallout Class
WebServiceMock Interface
XmlStreamReader Class
XmlStreamWriter Class
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
Appendices
Glossary
PDF

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getParameters()

Returns a map of the query string parameters that are included in the page URL. The key string contains the name of the parameter, while the value string contains the value of the parameter.

Signature

public Map<String, String> getParameters()

Return Value

Type: Map<String, String>

Usage

This map can be modified and remains in scope for the PageReference object. For instance, you could do:

1PageReference.getParameters().put('id', myID);

Parameter keys are case-insensitive. For example:

1System.assert(
2    ApexPages.currentPage().getParameters().get('myParamName') ==
3    ApexPages.currentPage().getParameters().get('myparamname'));