> ## Documentation Index
> Fetch the complete documentation index at: https://help.dingtalk.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Class

> The class picker component is designed for K-12 campus scenarios where users need to select a class. It supports multiselect mode and data population. Basic attributes include campus, school stage, and more.

## 1. Use Cases

The class picker component suits K-12 campus scenarios that require class selection, such as class moral education evaluations.

## 2. Basic Features

### 2.1 Multiselect Mode

Select multiple classes. To allow only a single class, turn off this toggle.

| **Form design view** | **Form runtime view** |
| -------------------- | --------------------- |
|                      |                       |

### 2.2 Data Population

Data population fills a class's basic attributes into components in the YiDA app to automatically generate form data. The class attributes include:

* Campus

* School stage

* Grade

* Homeroom teacher

* Number of students in the class

* Year of enrollment

| **Form design view** | **Form runtime view** |
| -------------------- | --------------------- |
|                      |                       |

## 3. Data Source

Uses the class master data from the school Contacts.