Reg Search with External controller

<apex:page controller="Registrations">
<apex:form >
<apex:pageBlock >
<apex:pageBlockSection >

<apex:inputText value="{!Searched}"/>
<apex:commandButton value="Submit" Action="{!Submit}"/>
<apex:pageBlockTable value="{!Regs}" var="a">
<apex:column Value="{!a.Name__c}"></apex:column>
<apex:column Value="{!a.Email__c}"></apex:column>
<apex:column Value="{!a.Pancard__c}"></apex:column>
<apex:column Value="{!a.Phone__c}"></apex:column>

</apex:pageBlockTable>

</apex:pageBlockSection>
</apex:pageBlock>
</apex:form>
</apex:page>
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public class Registrations{

    public List<Registrations_c> Regs{set;get;}

    Public String Searched{set;get;}

    public Void Submit(){

        Regs=[select id,Name__c,Email__c,Pancard__c,Phone__c from Registrations__c where name=:Searched];

    }

}

http://developerforce.github.io/lightning-connect-tutorial/configure-data-source-objects.html

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