[javascript] How get data from material-ui TextField, DropDownMenu components?

Here all solutions are based on Class Component, but i guess most of the people who learned React recently (like me), at this time using functional Component. So here is the solution based on functional component.

Using useRef hooks of ReactJs and inputRef property of TextField.

    import React, { useRef, Component } from 'react'
    import { TextField, Button } from '@material-ui/core'
    import SendIcon from '@material-ui/icons/Send'

    export default function MultilineTextFields() {
    const valueRef = useRef('') //creating a refernce for TextField Component

    const sendValue = () => {
        return console.log(valueRef.current.value) //on clicking button accesing current value of TextField and outputing it to console 
    }

    return (
        <form noValidate autoComplete='off'>
        <div>
            <TextField
            id='outlined-textarea'
            label='Content'
            placeholder='Write your thoughts'
            multiline
            variant='outlined'
            rows={20}
            inputRef={valueRef}   //connecting inputRef property of TextField to the valueRef
            />
            <Button
            variant='contained'
            color='primary'
            size='small'
            endIcon={<SendIcon />}
            onClick={sendValue}
            >
            Send
            </Button>
        </div>
        </form>
    )
    }

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