How to access a state variable from a client component in a server component in Next.js?

Question

I am trying to use state variable from a client component which accepts certain form values from the user in component A and then I need to use those values in component B which is a server component and is mainly responsible for querying a .XML file with the form values.

However, let's say if I have two files in the app directory called A.tsx and B.tsx. How do I access the 'aValues' in B.tsx?

A.tsx:

'use client'

import { useState } from "react"

const A = () => {
    const [aValues, setAValues] = useState({
        name: '',
        phone: ''
      });

  return (
    <div>A is a Client component</div>
  )
}

export default A

B.tsx:

const B = () => {
  
  return (
    <div>B is a Server component and wants to display the aValues</div>
  )
}

export default B

1. I tried adding a Link tag and importing it in the b using useSearchParams but then I need to change component B to client as well.

A.tsx:

 <Link href={{ pathname: 'b', query: {aValues: JSON.stringify(aValues)}}}> B </Link>

B.tsx:

   'use client'
   import {useSearchParams} from 'next/navigation'
   
   const B = () => {
       const searchParams = useSearchParams()
       const aValues = searchParams.get('aValues')
       const result = JSON.parse(aValues)
      
       <div>{result.name}</div>
   }
   
   export default B

2. I also tried creating a global state with Redux and use it but felt it to be rather too complicated and a bit of an overkill for the task.

3. Additionally, I also tried creating a new C.tsx and importing <A/> and <B/> just to pass the aValues as children in B but still couldn't do it.

C.tsx

import A from 'A'
import B from 'B'

const C = () => {
  return (
    <div>
        <A>
        <B name={aValues.name} phone={aValues.phone}/>
        </A>
    </div>
  )
}

export default C

Answer 1

I am not sure what are you trying to do but if you just want to display the value from clientComponent A to B why don't you just import the client component inside B ?

However if you want to play with useState in B than B component will need to be client anyway

'use client'

import { useState } from "react"

const ComponentA = () => {
    const [aValues, setAValues] = useState({
        name: '',
        phone: ''
      });

  return (
    <div>{aValues.name}</div>  // A client component   
  ) }

export default ComponentA

B server component

import ComponentA from "componentA path" //the right path from your componentA

const ComponentB = () => {
  
  return (
    <ComponentA />
  )
}

export default ComponentB