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padmapadma 

Field dependency in Visual force page


Hi  All,
 How to give a Field dependency in Visual force page. how to write a clss and page. would  you know any body.please help....?
Thanks,
padma
Vijay NagarathinamVijay Nagarathinam
Sample code for dependent picklist  
<apex:page controller="sample">
    
    <apex:form >
    
    <apex:pageBlock>
        <apex:pageBlockSection columns="2">
            <apex:pageblockSectionItem>
                <apex:outputLabel value="State"/>
            </apex:pageblockSectionItem>        
            <apex:pageblockSectionItem>                
                <apex:selectList size="1" value="{!state}">
                    <apex:selectOptions value="{!states}"/>
                    <apex:actionSupport event="onchange" reRender="a"/>
                </apex:selectList>                
            </apex:pageblockSectionItem>
            <apex:pageblockSectionItem>
                <apex:outputLabel value="City"/>
            </apex:pageblockSectionItem>            
            <apex:pageblockSectionItem>
                <apex:selectList size="1" value="{!city}" id="a">
                    <apex:selectOptions value="{!cities}"/>
                </apex:selectList>
            </apex:pageblockSectionItem>            
        </apex:pageBlockSection>        
    </apex:pageBlock>
    </apex:form>
</apex:page>
  
public class sample
{
    public String state {get;set;}
    public String city {get;set;}

    public List<SelectOption> getStates()
    {
        List<SelectOption> options = new List<SelectOption>();
        options.add(new SelectOption('None','--- None ---'));        
        options.add(new SelectOption('TN','Tamil Nadu'));
        options.add(new SelectOption('KL','Kerala'));
        return options;
    } 
    
    public List<SelectOption> getCities()
    {
        List<SelectOption> options = new List<SelectOption>();
        if(state == 'TN')
        {       
            options.add(new SelectOption('CHE','Chennai'));
            options.add(new SelectOption('CBE','Coimbatore'));
        }
        else if(state == 'KL')
        {       
            options.add(new SelectOption('COA','Coachin'));
            options.add(new SelectOption('MVL','Mavelikara'));
        }
        else
        {
            options.add(new SelectOption('None','--- None ---'));
        }      
        return options;
    }       
}
padmapadma
 Hi vijay ,
Thank you for sharing the information.
 
Vijay NagarathinamVijay Nagarathinam
Refer this link also, you get some idea.

http://www.sundoginteractive.com/sunblog/posts/displaying-dependent-picklist-fields-on-a-visualforce-page

I think it will be helpful for you.