studio-web
latest
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- Getting started
- For administrators
- RPA workflow projects
- Creating an RPA workflow from an idea
- Creating a project
- How to start an RPA workflow
- Managing project files and folders
- Connecting RPA workflows to your accounts
- Configuring activities
- Managing the activities in a project
- Passing values between activities
- Iterating through items
- Managing the data in a project
- Configuring a project to use your data
- Using file and folder resources
- App projects
- Apps in Studio Web
- Set an external context using query parameters
- Set an external context using external events
- Use arrays to populate Dropdown, Multiselect dropdown, and Radio Button controls
- Use tabular controls with Data Service entities in app projects
- Embed conversational agents
- App activities
- Agentic processes
- Agents
- Solutions
- API workflows
- Tests

Studio Web user guide
Last updated Feb 19, 2026
Use arrays to populate Dropdown, Multiselect dropdown, and Radio Button controls
You can use arrays to populate the options of Dropdown, Multiselect dropdown, and Radio Button controls, by referencing them in the List source field of the control:
- Select the control and go to General properties tab.
- Open the expression editor for the List source field.
- Write one of the following expressions:
New List(Of String) From {"Value1", "Value2", "Value3"}.ToListSource()New List(Of String) From {"Value1", "Value2", "Value3"}.ToListSource(){"v1", "v2", "v3"}.ToListSource(){"v1", "v2", "v3"}.ToListSource()