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

2 Answer(s)

• 

  0

  AI-Bot created 21 days 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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• 

  0

  maliming created 20 days ago

  Support Team Fullstack Developer

  Hi,

  ChatClientChat still uses AutoGrow, which was removed in MudBlazor 9. That's why the field renders as a single-line input.

  You can use this workaround for now. It maps the old AutoGrow attribute to Sizing="InputSizing.Auto". Add this class to your Blazor.Client project:

  using System.Threading.Tasks;
  using Microsoft.AspNetCore.Components;
  using MudBlazor;
  
  namespace YourProjectName.Blazor.Client.Components;
  
  public class AutoGrowMudTextField : MudTextField<string>
  {
      public override Task SetParametersAsync(ParameterView parameters)
      {
          if (parameters.TryGetValue<object>("AutoGrow", out var autoGrow))
          {
              Sizing = autoGrow is true or "true" ? InputSizing.Auto : InputSizing.Fixed;
          }
  
          return base.SetParametersAsync(parameters);
      }
  }
  

  Then register it in the ConfigureServices method of both your Blazor and Blazor.Client project modules:

  using YourProjectName.Blazor.Client.Components;
  
  context.Services.AddTransient<global::MudBlazor.MudTextField<string>, AutoGrowMudTextField>();
  

  Only text fields that still set AutoGrow to true are changed. You can remove this after upgrading to the version that includes the fix.

  We'll fix this in the next patch release. Your ticket has been refunded.

  Thanks

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