Modify Row Selection State Outside of Table

Notes

Each row has internal state under a property called row.tableData.

You can handle a row's checked state via row.tableData.checked = bool

See the live demo below for more.

Live Demo

Live Editor

function SelectOutsideOfTable() {
  const [data, setData] = useState([
    {
      fruit: "Apple",
      id: 0,
    },
    {
      fruit: "Orange",
      id: 1,
    },
  ]);

  const toggleRowChecked = (row) => {
    return (row.tableData && row.tableData.checked ? !row.tableData.checked : true);
  }

  const toggleSelectAll = () => {
    const newData = data.map((row) => ({
      ...row,
      tableData: {
        checked: toggleRowChecked(row),
      },
    }));
    setData(newData);
  };

  const columns = [
    {
      title: "Fruit",
      field: "fruit",
    },
    {
      title: "ID",
      field: "id",
    },
  ];

  return (
    <div>
      <button onClick={toggleSelectAll}>Toggle Selection</button>
      <MaterialTable
        title="Select All External"
        columns={columns}
        data={data}
        options={{
          selection: true,
        }}
      />
    </div>
  );
}

Result

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