DevExpress 示例：在 Console、WinForms 和 WPF 应用中集成 AI 文本扩展

Integrate DevExpress AI-Powered Text Extensions into Console, WinForms, and WPF Apps

This example registers an Azure OpenAI service and uses AI APIs within a .NET console application and adds AI-powered text processing features to the following DevExpress UI components:

• WinForms MemoEdit
• WinForms RichEdit
• WPF TextEdit
• WPF RichEditControl

Note

DevExpress does not provide a REST API or include built-in LLMs/SLMs. To use AI services, you need an active Azure/OpenAI subscription to obtain the necessary REST API endpoint, key, and model deployment name. This information must be added at application startup to register AI clients and enable DevExpress AI-powered features in your application.

If these environment variables are not set, the sample falls back to the DevExpress demo proxy (https://api.devexpress.com/demo-openai) so you can try it out of the box. The demo proxy is rate-limited and intended for evaluation only — use your own Azure/OpenAI credentials for development.

Implementation Details

Install the following NuGet packages:

1. Azure.AI.OpenAI (minimal version - 2.3.0-beta.2)

2. DevExpress.AIIntegration

3. Microsoft.Extensions.AI.OpenAI

Note

We use the following versions of the Microsoft.Extensions.AI.* libraries in our source code:

• Microsoft.Extensions.AI | 9.7.1
• Microsoft.Extensions.AI.OpenAI | 9.7.1-preview.1.25365.4

We do not guarantee compatibility or correct operation with higher versions. Refer to the following announcement for additional information: DevExpress.AIIntegration moves to a stables version.

Register AI Services

The following code in the Program.cs file registers an Azure AI service in the application:

AIExtensionsContainerDefault defaultAIContainer;
public SampleAITextModifier()
{
    // Modify the following lines to obtain and pass your personal Azure OpenAI credentials to the `Register~` method.
    string azureOpenAIEndpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT");
    if (string.IsNullOrEmpty(azureOpenAIEndpoint))
        azureOpenAIEndpoint = "https://api.devexpress.com/demo-openai";//DevExpress demo proxy-server
    string azureOpenAIKey = Environment.GetEnvironmentVariable("AZURE_OPENAI_APIKEY");
    if (string.IsNullOrEmpty(azureOpenAIKey))
        azureOpenAIKey = "DEMO";//Demo key
    string deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENTNAME");
    if (string.IsNullOrEmpty(deploymentName))
        deploymentName = "demo";//DevExpress demo deployment

    IChatClient azureOpenAIClient = new AzureOpenAIClient(new Uri(azureOpenAIEndpoint),
            new System.ClientModel.ApiKeyCredential(azureOpenAIKey)).GetChatClient(deploymentName).AsIChatClient();
    AIExtensionsContainerDesktop.Default.RegisterChatClient(azureOpenAIClient);
}

Tip

Refer to the following help topic for instructions on registering OpenAI, Azure OpenAI, Ollama, and Semantic Kernel: Register AI Clients.

WinForms

Use the BehaviorManager component to activate AI-powered text transform extensions for DevExpress WinForms UI controls.

Drop the BehaviorManager component from the Toolbox onto a Form. Open the behavior manager's smart tag menu and click "Edit Behaviors" to edit behaviors. In the Behavior Collection Editor, create desired AI-powered text processing behaviors, attach them to corresponding UI controls, and configure behavior settings (for example, the Temperature):

Run the application. Select text in the MemoEdit or RichTextEdit control and invoke the context menu. The context menu will display an "AI Text Transform" submenu with AI-driven commands.

Click the desired command. AI will process the command and generate an answer. The AI-generated answer is displayed within a dialog. You can insert the answer directly into a document or text field with a single click. You can insert AI answers above/below the cursor, replace all content or selected text, or copy the answer to the clipboard.

WPF

To introduce AI-powered capabilities in DevExpress WPF UI controls, add the following namespaces to a Window:

xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
xmlns:dxai="http://schemas.devexpress.com/winfx/2008/xaml/ai"

The following code snippet attaches AI-powered text processing behaviors to a DevExpress Text Editor:

<dxe:TextEdit TextWrapping="Wrap">
        <dxmvvm:Interaction.Behaviors>
            <dxai:ExpandBehavior />
            <dxai:ShortenBehavior/>
            <dxai:SummarizeBehavior/>
            <dxai:ExplainBehavior/>
            <dxai:ChangeToneBehavior />
            <dxai:ProofreadBehavior/>
            <dxai:ChangeStyleBehavior/>
            <dxai:TranslateBehavior>
                <dxai:LanguageInfo Culture="en-US"/>
                <dxai:LanguageInfo Culture="de-DE"/>
                <dxai:LanguageInfo Culture="fr-FR"/>
            </dxai:TranslateBehavior>
            <dxai:CustomRequestBehavior/>
        </dxmvvm:Interaction.Behaviors>
</dxe:TextEdit>

Files to Review

• Console App: Program.cs
• WinForms App:
  • Program.cs (VB: Program.vb
  • RichEditForm.Designer.cs (VB: RichEditForm.Designer.vb
  • MemoEditForm.Designer.cs (VB: MemoEditForm.Designer.vb)
• WPF App:
  • App.xaml.cs (VB: App.xaml.vb)
  • MainWindow.xaml (VB: MainWindow.xaml)
  • RichEditWindow.xaml (VB: RichEditWindow.xaml)

Related Examples

• Rich Text Editor and HTML Editor for Blazor - How to integrate AI-powered extensions
• AI Chat for Blazor - How to add DxAIChat component in Blazor, MAUI, WPF, and WinForms applications

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