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---
category: Components
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type: Data Entry
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cols: 1
title: Transfer
---
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Double column transfer choice box.
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## When To Use
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- It is a select control essentially which can be use for selecting multiple items.
- Transfer can display more information for items and take up more space.
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Transfer the elements between two columns in an intuitive and efficient way.
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One or more elements can be selected from either column, one click on the proper `direction` button, and the transfer is done. The left column is considered the `source` and the right column is considered the `target` . As you can see in the API description, these names are reflected in.
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## API
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| Property | Description | Type | Default | Version |
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| --- | --- | --- | --- | --- |
| className | A custom CSS class. | string | \['', ''] | |
| dataSource | Used for setting the source data. The elements that are part of this array will be present the left column. Except the elements whose keys are included in `targetKeys` prop. | [TransferItem ](https://git.io/vMM64 )\[] | \[] | |
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| disabled | Whether disabled transfer | boolean | false | |
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| filterOption | A function to determine whether an item should show in search result list | (inputValue, option): boolean | | |
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| footer | A function used for rendering the footer. | (props) => ReactNode | | |
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| listStyle | A custom CSS style used for rendering the transfer columns. | object\|({direction: 'left'\|'right'}) => object | | |
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| locale | i18n text including filter, empty text, item unit, etc | { itemUnit: string; itemsUnit: string; searchPlaceholder: string; notFoundContent: ReactNode; } | `{ itemUnit: 'item', itemsUnit: 'items', notFoundContent: 'The list is empty', searchPlaceholder: 'Search here' }` | |
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| operations | A set of operations that are sorted from top to bottom. | string\[] | \['>', '< '] | |
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| operationStyle | A custom CSS style used for rendering the operations column. | object | | |
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| render | The function to generate the item shown on a column. Based on an record (element of the dataSource array), this function should return a React element which is generated from that record. Also, it can return a plain object with `value` and `label` , `label` is a React element and `value` is for title | (record) => ReactNode | | |
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| selectedKeys | A set of keys of selected items. | string\[] | \[] | |
| showSearch | If included, a search box is shown on each column. | boolean | false | |
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| showSelectAll | Show select all checkbox on the header | boolean | true | |
| style | A custom CSS style used for rendering wrapper element. | object | | |
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| targetKeys | A set of keys of elements that are listed on the right column. | string\[] | \[] | |
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| titles | A set of titles that are sorted from left to right. | ReactNode\[] | - | |
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| selectAllLabels | A set of customized labels for select all checkboxs on the header | (ReactNode \| (info: { selectedCount: number, totalCount: number }) => ReactNode)[] | | |
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| onChange | A callback function that is executed when the transfer between columns is complete. | (targetKeys, direction, moveKeys): void | | |
| onScroll | A callback function which is executed when scroll options list | (direction, event): void | | |
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| onSearch | A callback function which is executed when search field are changed | (direction: 'left'\|'right', value: string): void | - | |
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| onSelectChange | A callback function which is executed when selected items are changed. | (sourceSelectedKeys, targetSelectedKeys): void | | |
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### Render Props
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Transfer accept `children` to customize render list, using follow props:
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| Property | Description | Type | Version |
| --------------- | ----------------------- | ----------------------------------- | ------- |
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| direction | List render direction | `left` \| `right` | |
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| disabled | Disable list or not | boolean | |
| filteredItems | Filtered items | TransferItem[] | |
| onItemSelect | Select item | (key: string, selected: boolean) | |
| onItemSelectAll | Select a group of items | (keys: string[], selected: boolean) | |
| selectedKeys | Selected items | string[] | |
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#### example
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```jsx
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< Transfer { . . . props } > {listProps => < YourComponent { . . . listProps } / > }< / Transfer >
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```
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## Warning
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According the [standard ](http://facebook.github.io/react/docs/lists-and-keys.html#keys ) of React, the key should always be supplied directly to the elements in the array. In Transfer, the keys should be set on the elements included in `dataSource` array. By default, `key` property is used as an unique identifier.
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If there's no `key` in your data, you should use `rowKey` to specify the key that will be used for uniquely identify each element.
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```jsx
// eg. your primary key is `uid`
return < Transfer rowKey = {record = > record.uid} />;
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```
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## FAQ
### How to support fetch and present data from a remote server in Transfer column.
In order to keep the page number synchronized, you can disable columns you checked without removing the option: < https: / / codesandbox . io / s / 93xeb >