# Samples

- [APIs](/v4-beta/samples/apis.md): Samples for APIs.
- [Custom Status Codes](/v4-beta/samples/apis/custom-status-codes.md): This sample shows how to define custom status codes for an API endpoint.
- [Apps](/v4-beta/samples/apps.md): Samples for apps.
- [Active Directory Tree View](/v4-beta/samples/apps/active-directory-tree-view.md): This sample creates a tree view of the OUs within Active Directory.
- [Export-CSV Download](/v4-beta/samples/apps/export-csv-download.md): This sample shows how to generate data with Export-CSV and send it to the user via a download.
- [Dynamic Select Dropdown](/v4-beta/samples/apps/dynamic-select-dropdown.md): Create a dynamic select dropdown.
- [Textbox Length Validation](/v4-beta/samples/apps/textbox-length-validation.md)
- [Tree View Font Size](/v4-beta/samples/apps/tree-view-font-size.md): This sample uses UDStyle to change the font size of the tree view control.
- [SQL Data Grid](/v4-beta/samples/apps/sql-data-grid.md): An example of a data grid that queries and updates data in SQL.