Accessibility in ASP.NET Core Chart component
17 Jan 20245 minutes to read
The Chart component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.
The accessibility compliance for the Chart component is outlined below.
| Accessibility Criteria | Compatibility |
|---|---|
| WCAG 2.2 Support |  |
| Section 508 Support | |
| Screen Reader Support | |
| Right-To-Left Support | |
| Color Contrast | |
| Mobile Device Support | |
| Keyboard Navigation Support | |
| Accessibility Checker Validation | |
| Axe-core Accessibility Validation | |
- All features of the component meet the requirement.
- Some features of the component do not meet the requirement.
- The component does not meet the requirement.WAI-ARIA attributes
The Chart component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Chart component:
- img (role)
- button (role)
- region (role)
- aria-label (attribute)
- aria-hidden (attribute)
- aria-pressed (attribute)
Keyboard interaction
The Chart component followed the keyboard interaction guideline, making it easy for people who use assistive technologies (AT) and those who completely rely on keyboard navigation. The following keyboard shortcuts are supported by the Chart component.
| Press | To do this |
|---|---|
| Alt + J | Moves the focus to the chart element. |
| Tab | Moves the focus to the next element in the chart. |
| Shift + Tab | Moves the focus to the previous element in the chart. |
| Down Arrow | Moves the focus to the data point left side from the selected point. |
| Up Arrow | Moves the focus to the data point right side from the selected point. |
| Left Arrow | Moves the focus to the next series in the chart. |
| Right Arrow | Moves the focus to the previous series in the chart. |
| ESC | Cancel the tooltip for the data point. |
| Enter/Space | Selects the data point in the series. |
| Down/Left Arrow | Moves the focus to the legend left side from the selected legend. |
| Up/Right Arrow | Moves the focus to the legend right side from the selected legend. |
| Enter/Space | Toggles the visibility of the corresponding series. |
| Ctrl + + | Zoom in the chart. |
| Ctrl + - | Zoom out the chart. |
| Down/Up Arrow | Pan the chart vertically. |
| Left/Right Arrow | Pan the chart horizontally. |
| R | Reset the zoomed chart. |
| Ctrl + P | Prints the Chart. |
Ensuring accessibility
The Chart component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.
The accessibility compliance of the Chart component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Chart component with accessibility tools.