Material-Ui - Apply Max-Height to Select Children

Material-UI - Apply max-height to Select children

The height that you want to control is the Paper element rendered by the Popover element within Menu.

The default styles are maxHeight: 'calc(100% - 96px)'.

Below is one example of how to override this in v4 of Material-UI (v5 example further down):

import React from "react";
import { makeStyles } from "@material-ui/core/styles";
import InputLabel from "@material-ui/core/InputLabel";
import MenuItem from "@material-ui/core/MenuItem";
import FormControl from "@material-ui/core/FormControl";
import Select from "@material-ui/core/Select";

const useStyles = makeStyles(theme => ({
  formControl: {
    margin: theme.spacing(1),
    minWidth: 120
  },
  selectEmpty: {
    marginTop: theme.spacing(2)
  },
  menuPaper: {
    maxHeight: 100
  }
}));

const VALID_NOTES = [
  "C",
  "C#",
  "D",
  "D#",
  "E",
  "F",
  "F#",
  "G",
  "G#",
  "A",
  "A#",
  "B"
];
export default function SimpleSelect() {
  const classes = useStyles();
  const [note, setNote] = React.useState("");

  const handleChange = event => {
    setNote(event.target.value);
  };

  return (
    <div>
      <FormControl className={classes.formControl}>
        <InputLabel id="demo-simple-select-label">Note</InputLabel>
        <Select
          labelId="demo-simple-select-label"
          id="demo-simple-select"
          value={note}
          onChange={handleChange}
          MenuProps={{ classes: { paper: classes.menuPaper } }}
        >
          {VALID_NOTES.map(validNote => (
            <MenuItem value={validNote}>{validNote}</MenuItem>
          ))}
        </Select>
      </FormControl>
    </div>
  );
}

The key aspect being MenuProps={{ classes: { paper: classes.menuPaper } }} and the definition of the menuPaper styles.

---

Below is a similar example, but for v5 of Material-UI. This example leverages the new sx prop for the styling.

import React from "react";
import InputLabel from "@mui/material/InputLabel";
import MenuItem from "@mui/material/MenuItem";
import FormControl from "@mui/material/FormControl";
import Select from "@mui/material/Select";

const VALID_NOTES = [
  "C",
  "C#",
  "D",
  "D#",
  "E",
  "F",
  "F#",
  "G",
  "G#",
  "A",
  "A#",
  "B"
];
export default function SimpleSelect() {
  const [note, setNote] = React.useState("");

  const handleChange = (event) => {
    setNote(event.target.value);
  };

  return (
    <div>
      <FormControl sx={{ m: 1, minWidth: 120 }} variant="standard">
        <InputLabel id="demo-simple-select-label">Note</InputLabel>
        <Select
          labelId="demo-simple-select-label"
          id="demo-simple-select"
          value={note}
          onChange={handleChange}
          MenuProps={{ PaperProps: { sx: { maxHeight: 100 } } }}
        >
          {VALID_NOTES.map((validNote) => (
            <MenuItem value={validNote}>{validNote}</MenuItem>
          ))}
        </Select>
      </FormControl>
    </div>
  );
}

How to style react material ui select component height

Use the SelectDisplayProps prop. You can also pass down className or classes to make this work.

const { Select, MenuItem } = MaterialUI

function App() {
  return (
    <div>
      <Select
        SelectDisplayProps={{ style: { paddingTop: 8, paddingBottom: 8 } }}
        variant="outlined"
        style={{ width: 300 }}
        multiple
        value={[]}
        renderValue={(selected) => selected.join(", ")}
      >
        <MenuItem value="">
          <em>Select</em>
        </MenuItem>
      </Select>
    </div>
  );
}

ReactDOM.render(<App />, document.getElementById('root'))

<script src="https://unpkg.com/react@latest/umd/react.development.js" crossorigin="anonymous"></script>
<script src="https://unpkg.com/react-dom@latest/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/@material-ui/core@latest/umd/material-ui.development.js" crossorigin="anonymous"></script>
<script src="https://unpkg.com/babel-standalone@latest/babel.min.js" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap" />
<div id="root"></div>

How do I make Material UI's TextField dropdown selector open with a limited size of items?

You can try adding a maxHeight property to the SelectProps of the textfield component. Also, I believe you should rather use an MUI autocomplete if you want autocompletion and dropdown both.

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