Xceed DataGrid for WPF supports Microsoft's newest accessibility framework, Microsoft UI Automation. It is available on all operating systems that support Windows Presentation Foundation (WPF). It provides programmatic access to most UI elements, which enables assistive technology products such as screen readers to provide information about the UI to end users and to manipulate the UI using other than standard input. It also allows automated test scripts to interact with the UI.

Exposed Elements

Xceed DataGrid for WPF exposes its content and elements using Microsoft UI Automation. The following is a description of the elements that would be exposed in a typical grid.

The root object is the datagrid itself, which is exposed as a "DataGrid" UI automation control type that supports the Table, Grid, Selection, and Scroll Control Patterns.

At a minimum, if they are currently displayed, the datagrid will expose headers (fixed or not), groups, data items, and footers.

Depending on how the datagrid has been used in the application, several headers may be exposed. A header of control type "Custom" will be exposed that represents the datagrid's GroupByControl. Next, an object exposed as a "Header" control type will be encountered, which in turn exposes "HeaderItems" that support the Invoke and Transform Control Patterns. The "Header" and "HeaderItems" control types represent the ColumnManagerRow. Both the GroupByControl and the ColumnManagerRow headers are optional.

As for footers, there may be several, their control type depending on what the programmer has chosen to define. Because what they hold depends entirely on what has been implemented in the datagrid, it is not possible to define what elements they will expose.

Groups, if they are present, will be exposed as "Group" control type controls that support the ExpandCollapse Control Pattern. Normally, a group will expose its headers as "Custom" or "Panes", depending on the element, followed by its children items, then other groups, if several groups have been defined in the datagrid, or the "DataItem" control types, which will be only be exposed by the group. Any footers will be added last and are usually defined as "Custom"; however, other types may also be present.

Data items support the SelectionItem Control Pattern. Children exposed by a data item are of type "Custom" and represent each of the cells. In the case of a master/detail grid, the data items will expose DataGrids in their children. These child datagrids are almost identical to the main datagrid, except for the fact that they lack a GroupByControl.

Properties

Certain properties of each element can be modified. To do this for the main grid, the property must be attached to the DataGridControl. The following properties are supported: 

To change the properties on a group, whatever its level, an event must be attached to the DataGridControl. The passed argument will allow the property's value to be changed and will expose the instance of the class Group corresponding to the group for which a value is requested. The following events are supported:

To change the properties on a detail, whatever its level, an event must be attached to the DataGridControl. The passed argument will allow the property's value to be changed and will expose the instance of the class DataGridContext corresponding to the detail for which a value is requested. The following events are supported: