Radzen DropDown: User is Able to Select Options without being Presented the DropDown List #291

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opened 2026-01-29 17:34:48 +00:00 by claunia · 1 comment
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Originally created by @monseiurmystere on GitHub (Jan 10, 2022).

Bug

When a user focuses on a RadzenDropDown control, they are able to select options without being presented the options when Multiple="true" on the control itself.

Environment:

  • Operating System: **Windows 10 (Version 1809+) **
  • Browser: Microsoft Edge
    • Version: 97.0.1072.55 (Stable Channel)
  • .NET Runtime Information: v6.0.101

How to Reproduce:

Pre-requisite: The RadzenDropDown control needs to have the argument Multiple="true" & The Action is reproduced on Keyboard Solely.

  • Focus on the RadzenDropDown by navigating to it using the Tab key.
  • Press the ArrowUp or ArrowDown key while the DropDown is focused, and then to press Space which would then implicitly select a value (since the list has not been expanded to the user).
    • If the user repeatedly performs this action, they should be able to see the amount of selected items increase by means of the placeholder text stating how many items have been selected.

Expected Behaviour:

When the user navigates to the control using the Tab key, the DropDown should expand onFocus.

Alternative Solution: Add the Method into the DropDownBase for Developers to manually expand the DropDown so that they can control this event, should they need to bind anything to this event.

Originally created by @monseiurmystere on GitHub (Jan 10, 2022). <!-- IMPORTANT: Read this first!!! 1. If you own a Radzen Professional or Еnterprise subscription you can report your issue or ask us a question via email at info@radzen.com. Radzen staff will reply within 24 hours (Professional) or 16 hours (Enterprise) 2. The Radzen staff guarantees a response to issues in this repo only to paid subscribers. 3. If you have a HOW TO question start a new forum thread in the Radzen Community forum: https://forum.radzen.com. Radzen staff will close issues that are HOWTO questions. 4. Please adhere to the issue template. Specify all the steps required to reproduce the issue or link a project which reproduces it easily (without requiring extra steps such as restoring a database). --> ## Bug When a user focuses on a RadzenDropDown control, they are able to select options without being presented the options when Multiple="true" on the control itself. ### Environment: - Operating System: **Windows 10 \(Version 1809+\) ** - Browser: **Microsoft Edge** - Version: **97.0.1072.55 \(Stable Channel\)** - .NET Runtime Information: **v6.0.101** ### How to Reproduce: > Pre-requisite: The RadzenDropDown control needs to have the argument ```Multiple="true"``` & The Action is reproduced on Keyboard Solely. - Focus on the RadzenDropDown by navigating to it using the ```Tab``` key. - Press the ```ArrowUp``` or ```ArrowDown``` key while the DropDown is focused, and then to press ```Space``` which would then implicitly select a value \(since the list has not been expanded to the user\). - If the user repeatedly performs this action, they should be able to see the amount of selected items increase by means of the placeholder text stating how many items have been selected. ## Expected Behaviour: When the user navigates to the control using the ```Tab``` key, the DropDown should expand _onFocus_. > Alternative Solution: Add the Method into the DropDownBase for Developers to manually expand the DropDown so that they can control this event, should they need to bind anything to this event.
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@enchev commented on GitHub (Jul 24, 2024):

No longer reproducible

@enchev commented on GitHub (Jul 24, 2024): No longer reproducible
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Reference: starred/radzen-blazor#291