BlazorChatMessage.Visible Property

Specifies whether the message is visible in the DxAIChat message area.

Namespace: DevExpress.AIIntegration.Blazor.Chat

Assembly: DevExpress.AIIntegration.Blazor.Chat.v26.1.dll

Declaration

public bool? Visible { get; set; }

Property Value

Type	Description
Nullable<Boolean>	true to display the message; false to hide it; null to apply default visibility rules.

Remarks

Use the Visible property to override the default visibility of a BlazorChatMessage in the DxAIChat message area.

When the Visible property is not set, the component determines message visibility automatically based on the following rules:

• System messages (Role equals to ChatMessageRole.System) are hidden.
• Messages being generated (where Typing equals true) are visible.
• Messages that contain at least one text content item are visible.
• Messages that contain only non-text content items (images, documents, or other binary data) are hidden.

Enable the Visible property to display a message regardless of its content type. Disable the property to hide a message that would otherwise be visible.

The following code snippet loads conversation history that includes a message with binary content and forces it to be displayed:

<DxAIChat @ref="chat" />

@code {
    DxAIChat chat = default!;

    protected override async Task OnAfterRenderAsync(bool firstRender) {
        if(firstRender) {
            chat.LoadMessages([
                new BlazorChatMessage(ChatRole.User, [
                    new DataContent(imageBytes, "image/png")
                ]) { Visible = true },
                new BlazorChatMessage(ChatRole.Assistant, "I can see the image you shared.")
            ]);
        }
    }

    byte[] imageBytes = [];
}