DevExpress-Examples · pollyndos · Jun 5, 2025 · Jun 4, 2025 · Jun 4, 2025 · Jun 4, 2025
@@ -51,8 +51,8 @@
     <PackageReference Include="Azure.AI.OpenAI.Assistants" Version="1.0.0-beta.4" />
     <PackageReference Include="DevExpress.AIIntegration.OpenAI" Version="25.1.*-*" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="8.0.11" />
-    <PackageReference Include="Microsoft.Extensions.AI" Version="9.4.3-preview.1.25230.7" />
-    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.4.3-preview.1.25230.7" />
+    <PackageReference Include="Microsoft.Extensions.AI" Version="9.5.0" />
+    <PackageReference Include="Microsoft.Extensions.AI.OpenAI" Version="9.5.0-preview.1.25265.7" />
     <PackageReference Include="System.Data.SQLite" Version="1.0.117" />
     <PackageReference Include="DevExpress.AspNetCore.Reporting" Version="25.1.*-*" />
 	<PackageReference Include="DevExpress.AIIntegration.Web" Version="25.1.*-*" />

@@ -20,29 +20,26 @@ public AIAssistantCreator(OpenAIClient client, string deployment) {
             this.deployment = deployment;
         }
 
-        public async Task<(string assistantId, string threadId)> CreateAssistantAsync(Stream data, string fileName, string instructions, bool useFileSearchTool = true, CancellationToken ct = default) {
+        public async Task<(string assistantId, string threadId)> CreateAssistantAndThreadAsync(Stream data, string fileName, string instructions, CancellationToken ct = default) {
             data.Position = 0;
 
             ClientResult<OpenAIFile> fileResponse = await fileClient.UploadFileAsync(data, fileName, FileUploadPurpose.Assistants, ct);
             OpenAIFile file = fileResponse.Value;
 
             var resources = new ToolResources() {
                 CodeInterpreter = new CodeInterpreterToolResources(),
-                FileSearch = useFileSearchTool ? new FileSearchToolResources() : null
+                FileSearch =  new FileSearchToolResources()
             };
             resources.FileSearch?.NewVectorStores.Add(new VectorStoreCreationHelper([file.Id]));
             resources.CodeInterpreter.FileIds.Add(file.Id);
 
             AssistantCreationOptions assistantCreationOptions = new AssistantCreationOptions() {
                 Name = Guid.NewGuid().ToString(),
                 Instructions = instructions,
-                ToolResources = resources
+                ToolResources = resources,
+                Tools = { new CodeInterpreterToolDefinition(),
+                          new FileSearchToolDefinition() }
             };
-            assistantCreationOptions.Tools.Add(new CodeInterpreterToolDefinition());
-            if (useFileSearchTool) {
-                assistantCreationOptions.Tools.Add(new FileSearchToolDefinition());
-            }
-
             ClientResult<Assistant> assistantResponse = await assistantClient.CreateAssistantAsync(deployment, assistantCreationOptions, ct);
             ClientResult<AssistantThread> threadResponse = await assistantClient.CreateThreadAsync(cancellationToken: ct);
 

@@ -1,9 +1,9 @@
-using System;
+using DevExpress.AIIntegration.Services.Assistant;
+using Microsoft.AspNetCore.Hosting;
+using System;
 using System.Collections.Concurrent;
 using System.IO;
 using System.Threading.Tasks;
-using Microsoft.AspNetCore.Hosting;
-using DevExpress.AIIntegration.Services.Assistant;
 
 namespace ReportingApp.Services {
     public class AIAssistantProvider : IAIAssistantProvider {
@@ -19,7 +19,7 @@ public class AIAssistantProvider : IAIAssistantProvider {
         private ConcurrentDictionary<string, IAIAssistant> Assistants { get; set; } = new ();
 
         private async Task<string> CreateAssistant(Stream data, string fileName, string prompt) {
-            (string assistantId, string threadId) = await assistantCreator.CreateAssistantAsync(data, fileName, prompt);
+            (string assistantId, string threadId) = await assistantCreator.CreateAssistantAndThreadAsync(data, fileName, prompt);
 
             IAIAssistant assistant = await assistantFactory.GetAssistant(assistantId, threadId);
             await assistant.InitializeAsync();
@@ -35,9 +35,15 @@ public AIAssistantProvider(IAIAssistantFactory assistantFactory, IWebHostEnviron
             this.environment = environment;
             this.assistantCreator = assistantCreator;
         }
+
+        // Creates a Data Analysis Assistant for Web Document Viewer. 
+        // This assistant analyzes report content and answers questions related to information within the report.
         public async Task<string> CreateDocumentAssistant(Stream data) {
             return await CreateAssistant(data, Guid.NewGuid().ToString() + ".pdf", DOCUMENT_ASSISTANT_PROMPT);
         }
+
+        // Creates a UI Asisstant for Web Report Designer.
+        // This assistant explains how to use the Designer UI to accomplish various tasks. 
         public async Task<string> CreateUserAssistant() {
             string dirPath = Path.Combine(environment.ContentRootPath, "Data");
             string filePath = Path.Combine(dirPath, DOCUMENTATION_FILE_NAME);

@@ -1,4 +1,4 @@
-const createAssistantTab = (function() {
+const createAssistantTab = (function() {
 
     let lastUserQuery;
     let errorList = [];
@@ -34,11 +34,16 @@ const createAssistantTab = (function() {
     }
 
     function normalizeAIResponse(text) {
-        text = text.replace(/【\d+:\d+†[^\】]+】/g, "");
-        let html = marked.parse(text);
-        if(/<p>\.\s*<\/p>\s*$/.test(html))
-            html = html.replace(/<p>\.\s*<\/p>\s*$/, "")
-        return html;
+        if (text) {
+            text = text.replace(/【\d+:\d+†[^\】]+】/g, "");
+            let html = marked.parse(text);
+            if (/<p>\.\s*<\/p>\s*$/.test(html))
+                html = html.replace(/<p>\.\s*<\/p>\s*$/, "")
+            return html;
+        }
+        else {
+            return "Please try again later."
+        }
     }
 
     function copyText(text) {

@@ -1,5 +1,4 @@
 <!-- default badges list -->
-![](https://img.shields.io/endpoint?url=https://codecentral.devexpress.com/api/v1/VersionRange/853003889/25.1.3%2B)
 [![](https://img.shields.io/badge/Open_in_DevExpress_Support_Center-FF7200?style=flat-square&logo=DevExpress&logoColor=white)](https://supportcenter.devexpress.com/ticket/details/T1252182)
 [![](https://img.shields.io/badge/📖_How_to_use_DevExpress_Examples-e9f6fc?style=flat-square)](https://docs.devexpress.com/GeneralInformation/403183)
 [![](https://img.shields.io/badge/💬_Leave_Feedback-feecdd?style=flat-square)](#does-this-example-address-your-development-requirementsobjectives)
@@ -18,7 +17,9 @@ The AI assistant's role depends on the associated DevExpress Reports component:
 > [!Note]
 > We use the following versions of the `Microsoft.Extensions.AI.*` libraries in our source code:
 >
-> v25.1.2+ | **9.4.3-preview.1.25230.7**
+> - Microsoft.Extensions.AI.Abstractions: **9.5.0**
+> - Microsoft.Extensions.AI: **9.5.0**
+> - Microsoft.Extensions.AI.OpenAI: **9.5.0-preview.1.25265.7**
 >
 > We do not guarantee compatibility or correct operation with higher versions.
 
@@ -76,20 +77,28 @@ Files to Review:
 
 #### AI Assistant Provider
 
-On the server side, the `AIAssistantProvider` service manages assistants. An `IAIAssistantFactory` instance creates assistants with keys specified in previous steps.
+On the server side, the `AIAssistantProvider` service manages assistants. 
 
 ```cs
 public interface IAIAssistantProvider {
     IAIAssistant GetAssistant(string assistantName);
-    Task<string> CreateAssistant(AssistantType assistantType, Stream data);
-    Task<string> CreateAssistant(AssistantType assistantType);
+    Task<string> CreateDocumentAssistant(Stream data);
+    Task<string> CreateUserAssistant();
     void DisposeAssistant(string assistantName);
 }
 ```
 
+The `AIAssistantCreator.CreateAssistantAsync` method uploads a file to OpenAI, configures tool resources, creates an assistant with specified instructions and tools, initializes a new thread, and returns the assistant and thread IDs. The generated assistant and thread IDs are then passed to the `IAIAssistantFactory.GetAssistant` method, which returns an `IAIAssistant` instance. The created instance is added to the application's assistant collection and is referenced by its unique name.
+
+For information on OpenAI Assistants, refer to the following documents: 
+- [OpenAI Assistants API overview](https://platform.openai.com/docs/assistants/overview)
+- [Azure OpenAI: OpenAI Assistants client library for .NET](https://learn.microsoft.com/en-us/dotnet/api/overview/azure/ai.openai.assistants-readme?view=azure-dotnet-preview)
+- [OpenAI .NET API library](https://github.com/openai/openai-dotnet)
+
 Files to Review: 
 - [AIAssistantProvider.cs](./CS/ReportingApp/Services/AIAssistantProvider.cs)
 - [IAIAssistantProvider.cs](./CS/ReportingApp/Services/IAIAssistantProvider.cs)
+- [AIAssistantCreator.cs](./CS/ReportingApp/Services/AIAssistantCreator.cs)
 
 
 ### Web Document Viewer (Data Analysis Assistant)
@@ -132,7 +141,7 @@ On the `BeforeRender` event, add a new tab (a container for the assistant interf
 
 #### Access the Assistant
 
-Once the document is ready, the `DocumentReady` event handler sends a request to the server and obtains the assistant's ID:
+Once the document is ready, the `DocumentReady` event handler sends a request to the server and obtains the assistant name:
 
 ```js
 async function DocumentReady(sender, args) {
@@ -144,7 +153,27 @@ async function DocumentReady(sender, args) {
 }
 ```
 
-The [`PerformCustomDocumentOperation`](https://docs.devexpress.com/XtraReports/js-ASPxClientWebDocumentViewer?p=netframework#js_aspxclientwebdocumentviewer_performcustomdocumentoperation) method exports the report to PDF and creates an assistant based on the exported document. See [AIDocumentOperationService.cs](./CS/ReportingApp/Services/AIDocumentOperationService.cs) for implementation details.
+The [`PerformCustomDocumentOperation`](https://docs.devexpress.com/XtraReports/js-ASPxClientWebDocumentViewer?p=netframework#js_aspxclientwebdocumentviewer_performcustomdocumentoperation) method exports the report to PDF and creates an assistant based on the exported document: 
+
+```cs
+// ...
+public override async Task<DocumentOperationResponse> PerformOperationAsync(DocumentOperationRequest request, PrintingSystemBase printingSystem, PrintingSystemBase printingSystemWithEditingFields) {
+    using(var stream = new MemoryStream()) {
+        printingSystem.ExportToPdf(stream, printingSystem.ExportOptions.Pdf);
+        var assistantName = await AIAssistantProvider.CreateDocumentAssistant(stream);
+        return new DocumentOperationResponse {
+            DocumentId = request.DocumentId,
+            CustomData = assistantName,
+            Succeeded = true
+        };
+    }
+}
+```
+
+See the following files for implementation details:
+
+- [AIDocumentOperationService.cs](./CS/ReportingApp/Services/AIDocumentOperationService.cs)
+- [AIAssistantProvider.cs](./CS/ReportingApp/Services/AIAssistantProvider.cs)
 
 #### Communicate with the Assistant
 
@@ -239,21 +268,9 @@ async function BeforeRender(sender, args) {
 }
 ```
 
-The `AIAssistantProvider` service creates an assistant using the provided PDF documentation (the *documentation.pdf* file):
+The `AIAssistantProvider.CreateUserAssistant` method creates an assistant using the *documentation.pdf* file ([end-user documentation for Web Reporting Controls](https://github.com/DevExpress/dotnet-eud) in the PDF format) and the specified prompt. See the [AIAssistantProvider.cs](./CS/ReportingApp/Services/AIAssistantProvider.cs) file for implementation details.
+
 
-```cs
-// ...
-public async Task<string> CreateAssistant(AssistantType assistantType, Stream data) {
-    var assistantName = Guid.NewGuid().ToString();
-    var assistant = await assistantFactory.CreateAssistant(assistantName);
-    Assistants.TryAdd(assistantName, assistant);
-    var prompt = GetPrompt(assistantType);
-    if(assistantType == AssistantType.UserAssistant) {
-        await LoadDocumentation(assistant, prompt);
-    } 
-    return assistantName;
-}
-```
 #### Communicate with the Assistant
 
 Each time a user sends a message, the [`onMessageEntered`](https://js.devexpress.com/jQuery/Documentation/24_2/ApiReference/UI_Components/dxChat/Configuration/#onMessageEntered) event handler passes the request to the assistant: