Hi,

I want to display related contacts of an Account using Visualforce page for which my Apex Page and Apex Class is listed below.

My Apex page is:

<apex:page controller="DisplayRelatedContactAccount" sidebar="false">
    <apex:form >        
        <apex:pageBlock >
            <apex:pageBlockSection > 
                <apex:outputText value="Enter Account Name">                    
                </apex:outputText>                
                <apex:inputText value="{! acctName}"/> 
                <apex:commandButton value="Show Contacts" action="{! showContacts}" reRender="out" status="mystatus"/>
                <apex:actionStatus id="mystatus" startText="Please wait related account contacts are loading....">
                </apex:actionStatus>
                <apex:pageBlockTable value="{! Contacts}" var="ct" rendered="{! acctName !=Null}">                
                    <apex:column headerValue="Name">
                        {! ct.Name}
                    </apex:column>
                    <apex:column headerValue="Phone">
                        {! ct.Phone}
                    </apex:column>
                    <apex:column headerValue="Email">
                        {! ct.Email}
                    </apex:column>
                </apex:pageBlockTable>
            </apex:pageBlockSection>
        </apex:pageBlock>
    </apex:form>
</apex:page>

For this my Apex class is :

public class DisplayRelatedContactAccount {
    public string acctName {get; set;}
    SET<string> accIds = new SET<string>();
    //public List<Contact> Contacts {get; set;}
    List<Account> lstacc = new List<Account>();
    List<contact> lstcon = new List<contact>();
    public List<Contact> showContacts(){
        lstacc = [SELECT Id, Name
                  FROM Account
                  WHERE name =:acctName];
        for(integer i=0; i<lstacc.size(); i++) {
            accIds.add(lstacc[i].id);
        }
        lstcon = [SELECT Id, Name, Phone, Email, AccountId
                  FROM Contact
                  WHERE AccountId IN :accIds];
        return lstcon;        
    }    
    public Pagereference showContacts() {
        return null;
    }
}

I am getting following error msg :

Return type of an Apex action method must be a PageReference. Found: visualforce.el.VisualforceArrayList

Please advise what needs to be done to remove the above mentioned error msg.

Thanks
Vijay Zutshi