export const cellOptions: CellOptions = { verticalAlign: "center", textAlign: "center" };

then use it like this:

"use client";
import * as React from 'react';
import { 
  Grid, 
  GridColumn as Column, 
  GridToolbar, 
  GridCellProps, 
  GridRowClickEvent, 
  GridItemChangeEvent 
} from '@progress/kendo-react-grid';
import { sampleProducts } from './sample-products';
import { DropDownCell } from './myDropDownCell';

interface Product {
  ProductID: number;
  ProductName?: string;
  FirstOrderedOn?: Date;
  UnitsInStock?: number;
  Discontinued?: boolean;
}

const App: React.FC = () => {
  const [data, setData] = React.useState<Product[]>(sampleProducts);
  const [editID, setEditID] = React.useState<number | null>(null);
  const [newRecordID, setNewRecordID] = React.useState<number | null>(null); // 新增状态变量

  const rowClick = (event: GridRowClickEvent) => {
    setEditID(event.dataItem.ProductID);
  };

  const itemChange = (event: GridItemChangeEvent) => {
    const inEditID = event.dataItem.ProductID;
    const field = event.field || '';
    const newData = data.map((item) =>
      item.ProductID === inEditID ? { ...item, [field]: event.value } : item
    );
    setData(newData);
  };

  const closeEdit = (event: React.MouseEvent<HTMLDivElement>) => {
    if (event.target === event.currentTarget) {
      setEditID(null);
    }
  };

  const addRecord = () => {
    const nextID = data.length + 1;
    const newRecord: Product = {
      ProductID: nextID,
    };
    setData([newRecord, ...data]);
    setEditID(newRecord.ProductID);
    setNewRecordID(newRecord.ProductID); // 设置新增行的 ID
  };

  const cellRender = (td: React.ReactElement, props: GridCellProps) => {
    if (!newRecordID || newRecordID !== props.dataItem.ProductID || props.field !== 'ProductName') {
      return td;
    }
    
    return (
      <td
        {...td.props}
        ref={(tdElement) => {
          const input = tdElement && tdElement.querySelector('input');
          const activeElement = document.activeElement as HTMLElement;
          const isButton = activeElement.className.indexOf('k-button') >= 0;
          if (
            !input ||
            !activeElement ||
            input === activeElement ||
            (!activeElement.contains(input) && !isButton)
          ) {
            return;
          } else {
            setTimeout(() => {
              input.select();
            });
          }
        }}
      ></td>
    );
  };

  return (
    <Grid
      cellRender={cellRender}
      style={{
        height: '420px',
      }}
      data={data.map((item) => ({
        ...item,
        inEdit: item.ProductID === editID,
      }))}
      editField="inEdit"
      onRowClick={rowClick}
      onItemChange={itemChange}
    >
      <GridToolbar>
        <div onClick={closeEdit}>
          <button
            title="Add new"
            className="k-button k-button-md k-rounded-md k-button-solid k-button-solid-primary"
            onClick={addRecord}
          >
            Add new
          </button>
        </div>
      </GridToolbar>
      <Column field="ProductID" title="Id" width="50px" editable={false} />
      <Column field="FirstOrderedOn" title="First Ordered" editor="date" format="{0:d}" />
      <Column field="ProductName" title="Name"  cell={DropDownCell} />
      <Column field="UnitsInStock" title="Units" width="150px" editor="numeric" />
      <Column field="Discontinued" title="Discontinued" editor="boolean"  />
    </Grid>
  );
};

const TestPage6: React.FC = () => {
  return <App />;
};

export default TestPage6;

exportconst sampleProducts = [{
    "ProductID": 1,
    "ProductName": "Chai",
    "SupplierID": 1,
    "CategoryID": 1,
    "QuantityPerUnit": "10 boxes x 20 bags",
    "UnitPrice": 18,
    "UnitsInStock": 39,
    "UnitsOnOrder": 0,
    "ReorderLevel": 10,
    "Discontinued": false,
    "Category": {
      "CategoryID": 1,
      "CategoryName": "Beverages",
      "Description": "Soft drinks, coffees, teas, beers, and ales"
    },
    "FirstOrderedOn": newDate(1996, 8, 20)
  }, {
    "ProductID": 2,
    "ProductName": "Chang",
    "SupplierID": 1,
    "CategoryID": 1,
    "QuantityPerUnit": "24 - 12 oz bottles",
    "UnitPrice": 19,
    "UnitsInStock": 17,
    "UnitsOnOrder": 40,
    "ReorderLevel": 25,
    "Discontinued": false,
    "Category": {
      "CategoryID": 1,
      "CategoryName": "Beverages",
      "Description": "Soft drinks, coffees, teas, beers, and ales"
    },
    "FirstOrderedOn": newDate(1996, 7, 12)
  }, {
    "ProductID": 3,
    "ProductName": "Aniseed Syrup",
    "SupplierID": 1,
    "CategoryID": 2,
    "QuantityPerUnit": "12 - 550 ml bottles",
    "UnitPrice": 10,
    "UnitsInStock": 13,
    "UnitsOnOrder": 70,
    "ReorderLevel": 25,
    "Discontinued": false,
    "Category": {
      "CategoryID": 2,
      "CategoryName": "Condiments",
      "Description": "Sweet and savory sauces, relishes, spreads, and seasonings"
    },
    "FirstOrderedOn": newDate(1996, 8, 26)
  }, {
    "ProductID": 4,
    "ProductName": "Chef Anton's Cajun Seasoning",
    "SupplierID": 2,
    "CategoryID": 2,
    "QuantityPerUnit": "48 - 6 oz jars",
    "UnitPrice": 22,
    "UnitsInStock": 53,
    "UnitsOnOrder": 0,
    "ReorderLevel": 0,
    "Discontinued": false,
    "Category": {
      "CategoryID": 2,
      "CategoryName": "Condiments",
      "Description": "Sweet and savory sauces, relishes, spreads, and seasonings"
    },
    "FirstOrderedOn": newDate(1996, 9, 19)
  }, {
    "ProductID": 5,
    "ProductName": "Chef Anton's Gumbo Mix",
    "SupplierID": 2,
    "CategoryID": 2,
    "QuantityPerUnit": "36 boxes",
    "UnitPrice": 21.35,
    "UnitsInStock": 0,
    "UnitsOnOrder": 0,
    "ReorderLevel": 0,
    "Discontinued": true,
    "Category": {
      "CategoryID": 2,
      "CategoryName": "Condiments",
      "Description": "Sweet and savory sauces, relishes, spreads, and seasonings"
    },
    "FirstOrderedOn": newDate(1996, 7, 17)
  }, {
    "ProductID": 6,
    "ProductName": "Grandma's Boysenberry Spread",
    "SupplierID": 3,
    "CategoryID": 2,
    "QuantityPerUnit": "12 - 8 oz jars",
    "UnitPrice": 25,
    "UnitsInStock": 120,
    "UnitsOnOrder": 0,
    "ReorderLevel": 25,
    "Discontinued": false,
    "Category": {
      "CategoryID": 2,
      "CategoryName": "Condiments",
      "Description": "Sweet and savory sauces, relishes, spreads, and seasonings"
    },
    "FirstOrderedOn": newDate(1996, 9, 19)
  }, {
    "ProductID": 7,
    "ProductName": "Uncle Bob's Organic Dried Pears",
    "SupplierID": 3,
    "CategoryID": 7,
    "QuantityPerUnit": "12 - 1 lb pkgs.",
    "UnitPrice": 30,
    "UnitsInStock": 15,
    "UnitsOnOrder": 0,
    "ReorderLevel": 10,
    "Discontinued": false,
    "Category": {
      "CategoryID": 7,
      "CategoryName": "Produce",
      "Description": "Dried fruit and bean curd"
    },
    "FirstOrderedOn": newDate(1996, 7, 22)
  }, {
    "ProductID": 8,
    "ProductName": "Northwoods Cranberry Sauce",
    "SupplierID": 3,
    "CategoryID": 2,
    "QuantityPerUnit": "12 - 12 oz jars",
    "UnitPrice": 40,
    "UnitsInStock": 6,
    "UnitsOnOrder": 0,
    "ReorderLevel": 0,
    "Discontinued": false,
    "Category": {
      "CategoryID": 2,
      "CategoryName": "Condiments",
      "Description": "Sweet and savory sauces, relishes, spreads, and seasonings"
    },
    "FirstOrderedOn": newDate(1996, 11, 1)
  }, {
    "ProductID": 9,
    "ProductName": "Mishi Kobe Niku",
    "SupplierID": 4,
    "CategoryID": 6,
    "QuantityPerUnit": "18 - 500 g pkgs.",
    "UnitPrice": 97,
    "UnitsInStock": 29,
    "UnitsOnOrder": 0,
    "ReorderLevel": 0,
    "Discontinued": true,
    "Category": {
      "CategoryID": 6,
      "CategoryName": "Meat/Poultry",
      "Description": "Prepared meats"
    },
    "FirstOrderedOn": newDate(1997, 1, 21)
  }, {
    "ProductID": 10,
    "ProductName": "Ikura",
    "SupplierID": 4,
    "CategoryID": 8,
    "QuantityPerUnit": "12 - 200 ml jars",
    "UnitPrice": 31,
    "UnitsInStock": 31,
    "UnitsOnOrder": 0,
    "ReorderLevel": 0,
    "Discontinued": false,
    "Category": {
      "CategoryID": 8,
      "CategoryName": "Seafood",
      "Description": "Seaweed and fish"
    },
    "FirstOrderedOn": newDate(1996, 8, 5)
  }];
MyDropDownCell.tsx：

import * as React from 'react';
import { MultiColumnComboBox } from '@progress/kendo-react-dropdowns';
import { GridCellProps } from '@progress/kendo-react-grid';

// 定义员工数据和列
const employees = [
    {
        id: 1,
        name: "Daryl Sweeney",
        reportsTo: null,
        phone: "(555) 924-9726",
        extension: 8253,
        hireDate: new Date("2012-02-07T20:00:00.000Z"),
        fullTime: true,
        position: "CEO",
        timeInPosition: 2,
    },
    {
        id: 2,
        name: "Guy Wooten",
        reportsTo: 1,
        phone: "(438) 738-4935",
        extension: 1155,
        hireDate: new Date("2010-03-03T20:00:00.000Z"),
        fullTime: true,
        position: "Chief Technical Officer",
        timeInPosition: 1,
    }
];

const columns = [
    { field: 'id', header: 'ID', width: '100px' },
    { field: 'name', header: 'Name', width: '300px' },
    { field: 'position', header: 'Position', width: '300px' }
];

// 创建 DropDownCell 组件
export const DropDownCell = (props: GridCellProps) => {
    const { dataItem, field, onChange } = props;
    const dataValue = dataItem[field];

    const handleChange = (e: any) => {
        if (onChange) {
            onChange({
                dataItem,
                field,
                syntheticEvent: e.syntheticEvent,
                value: e.target.value
            });
        }
    };

    return (
        <td>
            {dataItem.inEdit ? (
                <MultiColumnComboBox
                    data={employees}
                    columns={columns}
                    textField="name"
                    style={{ width: '300px' }}
                    placeholder="Please select ..."
                    value={employees.find(emp => emp.name === dataValue)}
                    onChange={handleChange}
                />
            ) : (
                dataValue
            )}
        </td>
    );
};