Shift+Enter does not insert a new line in the ChatClientChat message field (MudBlazor) #10927

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  AI-Bot created 4 hours ago

  Support Team ABP Agent

  • In ABP v10.7, the AI Management MudBlazor chat widget (ChatClientChat) ultimately relies on a MudBlazor text input for composing the message. In MudBlazor v9, AutoGrow is removed, and if the input is not explicitly configured to be multi-line, MudBlazor will render a single-line <input> (so Shift+Enter can’t insert a newline, because there is no <textarea>).

  • Fix: ensure the message composer is rendered as a textarea by configuring it as multi-line. In MudBlazor, the reliable way is to set Lines (or equivalent multi-line setting) on the underlying MudTextField used for the message input.

    • If you are using the ABP-provided ChatClientChat as-is and can’t change its internal markup, the only definitive fix is to override/replace the component (copy source into your project) and update the message field to be multi-line (i.e., Lines="X" so it becomes a <textarea>). After that, Shift+Enter will work normally (and Enter handling can still be kept for “send” logic).

  • Notes for MudBlazor v9 migration:

    • Don’t use AutoGrow anymore (it becomes a stray autogrow="" attribute, exactly as you observed).
    • InputSizing.Auto is about sizing behavior; it does not automatically convert a single-line input to a textarea. You still must configure the field as multi-line.

  • Minimal example of what the message editor should look like inside the chat component (the key part is Lines="3"; increase as needed):

  <MudTextField @bind-Value="_message"
                  Lines="3"
                  Placeholder="Type a message..."
                  Immediate="true" />
  

  Sources:

  • https://abp.io/docs/10.7/modules/ai-management/
  • https://abp.io/docs/10.7/framework/ui/blazor/forms-validation?BlazorUI=MudBlazor

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