MessageSendingEventArgs Class

Contains data for the MessageSending event and allows you to intercept message delivery.

Namespace: DevExpress.AIIntegration.Blazor.Chat

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

Declaration

public class MessageSendingEventArgs :
    CancelEventArgs

Related API Members

MessageSendingEventArgs is the data class for the following events:

• DxAIChat.MessageSending

Remarks

Use the MessageSendingEventArgs argument in a MessageSending event handler to access user input, attached files, and reference the AI Chat component.

Set the MessageSendingEventArgs.Cancel property to true to block automatic message delivery and send the message to the AI service manually.

The following code snippet logs the original message and sends a modified prompt to the AI service:

<DxAIChat MessageSending="OnMessageSending" />

@code {
    private async Task OnMessageSending(MessageSendingEventArgs args) {
        args.Cancel = true;
        Console.WriteLine($"Original message text: {args.Text}");
        StringBuilder sb = new StringBuilder();
        sb.AppendLine("Hello!");
        sb.AppendLine(args.Text);
        await args.Chat.AppendMessageAsync(sb.ToString(), ChatRole.User);
    }
}

Inheritance

Object

EventArgs

CancelEventArgs

MessageSendingEventArgs