1、安装NuGet包

dotnet add package Microsoft.Extensions.AI

dotnet add package Microsoft.Extensions.AI.OpenAI

2、使用Microsoft.Extensions.AI调用大模型

（1）非流式输出

using Microsoft.Extensions.AI;
using OpenAI;
var chatclient=new OpenAIClient(
    new System.ClientModel.ApiKeyCredential("ms-ee0ab5e3-d373-498b-923e-c727be632d50"),
    new OpenAIClientOptions{
        Endpoint = new Uri("https://api-inference.modelscope.cn/v1")
    }).GetChatClient("deepseek-ai/DeepSeek-V3.2").AsIChatClient();
/*调用本地大模型
using OllamaSharp;  //dotnet add package OllamaSharp
IChatClient chatclient=OllamaApiClient(new Uri("http://localhost:11434/"), "phi3:mini");*/
while(true){
    Console.Write("Q：")
    string msg=Console.ReadLine("")??"exit";
    if(msg=="exit")  break;
    Console.Write("AI：");
    Console.WriteLine(await chatclient.GetResponseAsync(msg));  //一次性输出大模型的回答
}

（2）带对话历史（上下文，短期记忆）的非流式输出

using Microsoft.Extensions.AI;
using OpenAI;
var chatclient=new OpenAIClient(
    new System.ClientModel.ApiKeyCredential("ms-ee0ab5e3-d373-498b-923e-c727be632d50"),
    new OpenAIClientOptions{
        Endpoint = new Uri("https://api-inference.modelscope.cn/v1")
    }).GetChatClient("deepseek-ai/DeepSeek-V3.2").AsIChatClient();
List<ChatMessage> history=[];
history.Add(new ChatMessage(ChatRole.System,"你是一名python专家，回答python专业问题"));
while(true){
    Console.Write("Q：")
    string msg=Console.ReadLine("")??"exit";
    if(msg=="exit")  break;
    history.Add(new(ChatRole.User,msg));
    Console.Write("AI：");
    ChatResponse response=await chatclient.GetResponseAsync(history)
    Console.WriteLine(response);
    history.AddMessages(response);
}

（3）流式输出

using Microsoft.Extensions.AI;
using OpenAI;
var chatclient=new OpenAIClient(
    new System.ClientModel.ApiKeyCredential("ms-ee0ab5e3-d373-498b-923e-c727be632d50"),
    new OpenAIClientOptions{
        Endpoint = new Uri("https://api-inference.modelscope.cn/v1")
    }).GetChatClient("deepseek-ai/DeepSeek-V3.2").AsIChatClient();
while(true){
    Console.Write("Q：")
    string msg=Console.ReadLine("")??"exit";
    if(msg=="exit")  break;
    Console.Write("AI：");
    await foreach(ChatResponseUpdate update in chatclient.GetStreamingResponseAsync(msg)){
        Console.Write(update);
    }
    Console.WriteLine();
}

（4）带对话历史（上下文，短期记忆）的流式输出

using Microsoft.Extensions.AI;
using OpenAI;
var chatclient=new OpenAIClient(
    new System.ClientModel.ApiKeyCredential("ms-ee0ab5e3-d373-498b-923e-c727be632d50"),
    new OpenAIClientOptions{
        Endpoint = new Uri("https://api-inference.modelscope.cn/v1")
    }).GetChatClient("deepseek-ai/DeepSeek-V3.2").AsIChatClient();
List<ChatMessage> history=[];
history.Add(new(ChatRole.System,"你是一名python专家，回答python专业问题"));
while(true){
    Console.Write("Q：")
    string msg=Console.ReadLine("")??"exit";
    if(msg=="exit")  break;
    history.Add(new(ChatRole.User,msg));
    List<ChatResponseUpdate> updates=[];
    Console.Write("AI：");
    await foreach(ChatResponseUpdate update in GetStreamingResponseAsync(history){
        Console.Write(update);
        updates.Add(update);
    }    
    Console.WriteLine();
    history.AddMessages(updates);
}

3、在asp.net core中使用