DxAIChat.ResponseReceived Event

Fires after the AI provider returns a response, before the message is displayed in the chat.

Namespace: DevExpress.AIIntegration.Blazor.Chat

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

Declaration

[Parameter]
public EventCallback<ResponseReceivedEventArgs> ResponseReceived { get; set; }

Parameters

Type	Description
ResponseReceivedEventArgs	An object that contains event data.

Remarks

Handle the ResponseReceived event to process the AI provider’s response, save an audit trail, or trigger business logic.

The event timing depends on the UseStreaming property:

• When UseStreaming is false, the event fires before the response appears in the chat.
• When UseStreaming is true, the event fires after the full response appears in the chat.

The following code snippet handles the ResponseReceived event to remove specific tool call details from the response:

Razor

@using DevExpress.AIIntegration.Blazor.Chat
@using DevExpress.AIIntegration.Tools
@inject AIToolsContextContainer aiToolsContextContainer

<DxAIChat IncludeFunctionCallInfo="true"
          ResponseReceived="OnResponseReceived">
</DxAIChat>

@code {
    private void OnResponseReceived(ResponseReceivedEventArgs args) {
        args.Message.FunctionCalls.RemoveAll(
            fc => fc?.Request?.Name != null &&
            fc.Request.Name == "Generic_Greeting");
    }

    protected override void OnAfterRender(bool firstRender) {
        if(firstRender) {
            var context = new AIToolsContextBuilder()
                .WithToolMethods(MyAITools.Greet, MyAITools.AddNumbers)
                .Build();
            aiToolsContextContainer.Add(context);
        }
    }
}

AI Tools

using DevExpress.AIIntegration;
using System.ComponentModel;

public class MyAITools
{
    [AIIntegrationTool("Generic_Greeting")]
    [Description("Greets a user with their name.")]
    public static string Greet(
        [Description("The name of the user.")] string name) {
        var now = DateTime.Now;
        if(now.Hour < 7)
            return $"Good night, {name}!";
        else if(now.Hour < 12)
            return $"Good morning, {name}!";
        else if(now.Hour < 18)
            return $"Good afternoon, {name}!";
        else
            return $"Good evening, {name}!";
    }

    [AIIntegrationTool("Generic_Calculator")]
    [Description("Adds two numbers.")]
    public static int AddNumbers(
        [Description("First number")] int a,
        [Description("Second number")] int b) {
        return a + b;
    }
}

Program.cs

using Azure.AI.OpenAI;
using DevExpress.AIIntegration;
using Microsoft.Extensions.AI;
using System.ClientModel;

/* ... */

AzureOpenAIClient azureOpenAIClient = new(
      new Uri(azureOpenAiEndpoint),
      new ApiKeyCredential(azureOpenAiKey)
);
IChatClient azureOpenAIChatClient = azureOpenAIClient.GetChatClient(azureOpenAiModel).AsIChatClient();
builder.Services.AddScoped((sp) => {
    return azureOpenAIChatClient.AsBuilder()
                                .UseDXTools()
                                .UseFunctionInvocation()
                                .Build(sp);
});
builder.Services.AddDevExpressAI();
builder.Services.AddDevExpressBlazor();