Hi pintoo rajput,

The easiest approach to get the value from inputText using custom controller and save it, is by getting and setting the variable in custom controller.
And no need of Component in this case.

Refer to the following code to get input field value from page using Custom Controller.

APEX PAGE--
<apex:page controller="myComponentCon">
    <apex:form >
        <apex:pageBlock>
               <apex:outputLabel value="Enter your Name " for="firstname"></apex:outputLabel>
               <apex:inputText id="firstname" value="{!firstname}"/>
               <apex:commandButton action="{!submit}" value="Submit"/>
        </apex:pageBlock>
    </apex:form>
</apex:page>

CUSTOM CONTROLLER--
public class myComponentCon
{
    public String firstname {get;set;}
   
    public myComponentCon ()
    {
        firstname = '';
    }
    
    /*public void addmore()
    {
        Registration__c obj =new Registration__c();
        reg.add(obj);
        system.debug(reg);
    }*/
  
    public PageReference submit()
    {
        Registration__c r = new Registration__c();
        if (firstname == '')
        {
            ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO, 'Please enter name'));
             return null;
        }
        try
        {
            r.firstname__c = firstname;
            insert r;
           
        }
        catch(Exception ex)
        {
            system.debug('exception');
            ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR, ex.getMessage() ));
            return null;
        }
        PageReference pageref = Page.RegisterPage;
        pageref.getParameters().put('thankYou', 'thanks');
        pageref.setRedirect(true);
        return pageref;  
    }
}


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--
Regards,
Grazitti Team
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