C#实现本地AI聊天功能（Deepseek R1及其他模型）。

前言

1、C#实现本地AI聊天功能

WPF+OllamaSharpe实现本地聊天功能,可以选择使用Deepseek 及其他模型。

2、此程序默认你已经安装好了Ollama。

在运行前需要线安装好Ollama,如何安装请自行搜索

Ollama下载地址： https://ollama.org.cn

Ollama模型下载地址： https://ollama.org.cn/library

基本运行环境： 根据自己使用的AI搜索对应模型基本配置，有需要使用GPU运行的模型。

此程序除了安装Ollama外，无需安装其他配置。

.
3、相关依赖
OllamaSharpe：启用本地Ollama服务
Markdig.wpf : Markdown格式化输出功能。
Microsoft.Xaml.Behaviors.Wpf ：解决部分不能进行命令绑定的控件实现命令绑定功能。

运行

项目

项目结构

项目结构包含如下目录:
.
Commands: 用于命令绑定
Models : 视图对应的模型
Services ：一些操作服务
ViewModels：视图模型，主要的业务处理
Views :视图以及一些视图控件的样式资源

具体如下图:

项目代码

Commands

EventsCommand

using System.Windows.Input;
/// <summary>
/// 事件命令：
///   有些控件的无法绑定命令，但是想要实现命令绑定功能，可通过创建该命令实现。
///   需要引用Microsoft.Xaml.Behaviors.Wpf组合实现。
/// </summary>
public class EventsCommand<T> : ICommand
{private readonly Action<T> _execute;private readonly Func<T, bool> _canExecute;public EventsCommand(Action<T> execute, Func<T, bool> canExecute = null){_execute = execute ?? throw new ArgumentNullException(nameof(execute));_canExecute = canExecute;}public bool CanExecute(object parameter){return _canExecute?.Invoke((T)parameter) ?? true;}public void Execute(object parameter){_execute((T)parameter);}public event EventHandler CanExecuteChanged{add { CommandManager.RequerySuggested += value; }remove { CommandManager.RequerySuggested -= value; }}
}

ParameterCommand

using System.Windows.Input;
namespace OfflineAI.Commands
{/// <summary>/// 参数命令：///     可以带参数的命令：/// </summary>public class ParameterCommand : ICommand{public Action<object> execute;public ParameterCommand(Action<object> execute){this.execute = execute;}public event EventHandler? CanExecuteChanged;public bool CanExecute(object? parameter){return CanExecuteChanged != null;}public void Execute(object? parameter){execute?.Invoke(parameter);}}
}

ParameterlessCommand

using System.Windows.Input;
namespace OfflineAI.Commands
{/// <summary>/// 无参数命令：///     无参数的命令：/// </summary>public class ParameterlessCommand : ICommand{private Action _execute;public ParameterlessCommand(Action execute){_execute = execute;}public event EventHandler? CanExecuteChanged;public bool CanExecute(object? parameter){return CanExecuteChanged != null;}public void Execute(object? parameter){_execute.Invoke();}}
}

Models

ChatRecordModel

namespace OfflineAI.Models
{/// <summary>/// 聊天记录模型/// </summary>public class ChatRecordModel{public ChatRecordModel(int id, string dateTime, string name,string fullName, string data){Id = id;DateTime = dateTime;Name = name;FullName = fullName;Data = data;}/// <summary>/// ID/// </summary>public int Id { get; set; }/// <summary>/// 日期/// </summary>public string DateTime { get; set; }/// <summary>/// 名称/// </summary>public string Name { get; set; }/// <summary>/// 完整名称/// </summary>public string FullName { get; set; }/// <summary>/// 数据/// </summary>public string Data { get; set; }}
}

FileOperationModel

namespace OfflineAI.Models
{public class FileOperationModel{/// <summary>/// 是否生成目录/// </summary>public bool IsGenerateDirectory {  get; set; }/// <summary>/// 文件目录/// </summary>public string Directory {  get; set; }/// <summary>/// 日期目录（生成的目录）/// </summary>public string DirectoryDateTime { get; set; }/// <summary>/// 文件名称（全路径）/// </summary>public string FileName { get; set; }/// <summary>/// 文件名称（生成文件全路径）/// </summary>public string FileNameDateTime { get; set; }}
}

Services

FileOperation

using OfflineAI.Models;
using System.IO;
namespace OfflineAI.Services
{/// <summary>/// 文件操作类：/// 1、2025-02-24：添加创建日期目录方法。输入文件名，添加时间目录。/// 2、2025-02-24：添加写入数据到文件方法（.txt格式）/// </summary>public class FileOperation{private FileOperationModel _fileOperation;#region 构造函数public FileOperation(string fileName){_fileOperation = new FileOperationModel();_fileOperation.IsGenerateDirectory = true;UpdataFileName(fileName);}#endregion#region 公共方法/// <summary>/// 更新文件名/// </summary>public void UpdataFileName(string fileName){if (Path.GetExtension(fileName).ToLower().Equals("txt"))_fileOperation.FileName = fileName;else_fileOperation.FileName = fileName + ".txt";_fileOperation.Directory = Path.GetDirectoryName(fileName);CreateDateTime();_fileOperation.FileNameDateTime = $"{_fileOperation.DirectoryDateTime}\\{Path.GetFileName(_fileOperation.FileName)}";}/// <summary>/// 写入文本/// </summary>public void WriteTxt(string data){SaveDataAsTxt(data);}/// <summary>/// 写入文本，指定文件名/// </summary>public void WriteTxt(string fileName, string data){UpdataFileName(fileName);SaveDataAsTxt(data);}public string ReadTxt(string fileName){// 使用 using 语句确保资源被正确释放using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))using (StreamReader sr = new StreamReader(fs)){return sr.ReadToEnd();}}/// <summary>/// 获取指定目录下的所有文件（*.txt）/// </summary>public string[] GetFiles(){string[] files = Directory.GetFiles(_fileOperation.Directory, "*.txt", SearchOption.AllDirectories);return files;}/// <summary>/// 获取指定目录下的所有文件（*.txt）/// </summary>public static string[] GetFiles(string directory){string[] files = Directory.GetFiles(directory, "*.txt", SearchOption.AllDirectories);return files;}#endregion#region 私有方法/// <summary>/// 保存数据为Txt类型的文本/// </summary>private void SaveDataAsTxt(string data){if (_fileOperation.IsGenerateDirectory){try{string fileName = _fileOperation.FileName;if (_fileOperation.IsGenerateDirectory){fileName = _fileOperation.FileNameDateTime;}using (FileStream fileStream = new FileStream(fileName, FileMode.Append, FileAccess.Write, FileShare.ReadWrite)){using (StreamWriter writer = new StreamWriter(fileStream)){writer.Write(data);}}Console.WriteLine("数据已成功写入文件。");}catch (Exception ex){Console.WriteLine("写入文件时发生错误: " + ex.Message);}}}/// <summary>/// 创建日期目录/// </summary>private void CreateDateTime(){if (_fileOperation.IsGenerateDirectory){string path = $"{_fileOperation.Directory}\\{DateTime.Now.ToString("yyyy")}";Directory.CreateDirectory($"{path}");path = $"{path}\\{DateTime.Now.ToString("yyyyMMdd")}\\";Directory.CreateDirectory($"{path}");_fileOperation.DirectoryDateTime = path;}}#endregion}
}

ProcessService

using System.ComponentModel;
using System.Diagnostics;
namespace OfflineAI.Services
{public class ProcessService{/// <summary>/// 执行CMD指令/// </summary>public static bool ExecuteCommand(string command){// 创建一个新的进程启动信息ProcessStartInfo processStartInfo = new ProcessStartInfo{FileName = "cmd.exe",           // 设置要启动的程序为cmd.exeArguments = $"/C {command}",    // 设置要执行的命令UseShellExecute = true,         // 使用操作系统shell启动进程CreateNoWindow = false,         //不创建窗体};try{Process process = Process.Start(processStartInfo);// 启动进程process.WaitForExit();    // 等待进程退出process.Close();          // 返回是否成功执行return process.ExitCode == 0;}catch (Exception ex){Debug.WriteLine($"发生错误: {ex.Message}");// 其他异常处理return false;}}}
}

ShareOllamaObject

using OfflineAI.Services;
using OllamaSharp;
using System.Collections.ObjectModel;namespace OfflineAI.Sevices
{/// <summary>/// 共享Ollama对象类：保持Ollama对象一致才能使用当前对象实现对话/// 作    者：吾与谁归/// 时    间：2025年02月18日/// 功    能：///     1） 2025-02-18：使用cmd命令启动Ollama服务,目前使用ollama list();///     2） 2025-02-18：初始化模型参数，在初始化时启用GPU、连接ollama、初始化模型。/// </summary>public class ShareOllamaObject{#region 字段|属性|集合#region 字段private bool _connected = false;        //连接状态private Chat chat;                      //构建交互式聊天模型对象。private OllamaApiClient _ollama;        //OllamaAPI对象private string _selectModel;        //选择的模型名称#endregion#region 属性/// <summary>/// 连接状态/// </summary>public bool Connected{get { return _connected; }set { _connected = value; }}public string SelectModel { get => _selectModel; set => _selectModel = value; }/// <summary>/// 构建交互式聊天模型对象。/// </summary>public Chat Chat{get { return chat; }set { chat = value; }}/// <summary>/// OllamaAPI对象/// </summary>public OllamaApiClient Ollama{get { return _ollama; }set { _ollama = value; }}#endregion#region 集合/// <summary>/// 模型列表/// </summary>public ObservableCollection<string> ModelList { get; set; }#endregion#endregion#region 构造函数public ShareOllamaObject(){ProcessService.ExecuteCommand("ollama list");Initialize("llama3.2:3b");ProcessService.GetProcessId("ollama");}#endregion#region 其他方法/// <summary>/// 初始化方法/// </summary>private void Initialize( string modelName){try{// 设置默认设备为GPUEnvironment.SetEnvironmentVariable("OLLAMA_DEFAULT_DEVICE", "gpu");//连接Ollama，并设置初始模型Ollama = new OllamaApiClient(new Uri("http://localhost:11434"));//获取本地可用的模型列表ModelList = (ObservableCollection<string>)GetModelList();//遍历查找是否包含llama3.2:3b模型var tmepModelName = ModelList.FirstOrDefault(name => name.ToLower().Contains("llama3.2:3b"));//设置的模型不为空if (tmepModelName != null){Ollama.SelectedModel = tmepModelName;}//模型列表不为空else if (ModelList.Count > 0){_ollama.SelectedModel = ModelList[ModelList.Count - 1];}//Ollama服务启用成功SelectModel = _ollama.SelectedModel;_connected = true;chat = new Chat(_ollama);}catch (Exception){_connected = false;     //Ollama服务启用失败}}/// <summary>/// 获取模型里列表/// </summary>public Collection<string> GetModelList(){var models = _ollama.ListLocalModelsAsync();var modelList = new ObservableCollection<string>();foreach (var model in models.Result){modelList.Add(model.Name);}return modelList;}public void ReCreateChat(){chat = new Chat(_ollama);}#endregion}
}

ViewModels

MainViewModel

using OfflineAI.Sevices;
using OfflineAI.Commands;
using OfflineAI.Views;
using System.Windows;
using System.Diagnostics;
using System.Windows.Input;
using System.ComponentModel;
using System.Windows.Controls;
using System.Collections.ObjectModel;
using System.IO;
using OfflineAI.Services;
using OfflineAI.Models;
namespace OfflineAI.ViewModels
{/// <summary>/// 主窗体视图模型：/// 作者：吾与谁归/// 时间：2025年02月17日（首次创建时间）/// 更新: ///     1、2025-02-17：添加折叠栏展开|折叠功能。///     2、2025-02-17：视图切换功能 1）系统设置 2) 聊天///     3、2025-02-18：关闭窗体时提示是否关闭，释放相关资源。///     4、2025-02-19：添加首页功能，和修改新聊天功能。点击新聊天会创建新的会话（Chat）。///     5、2025-02-20：窗体加载时传递Ollama对象。///     6、2025-02-24：添加了窗体加载时，加载聊天记录的功能。/// </summary>public class MainViewModel : PropertyChangedBase{#region 字段、属性、集合、命令#region 字段private UserControl _currentView;           //当前视图private ShareOllamaObject _ollamaService;   //共享Ollama服务对象private string _selectedModel;              //选择的模型private ObservableCollection<string> _modelListCollection;  //模型列表private int _expandedBarWidth = 50;         //折叠栏宽度private string _directory;                  //目录private string _fileName;                   //文件private ObservableCollection<ChatRecordModel> _chatRecordCollection;public event Action<string> LoadChatRecordEventHandler;#endregion#region 属性/// <summary>/// 当前显示视图/// </summary>public UserControl CurrentView { get => _currentView;set{if (_currentView != value){_currentView = value;OnPropertyChanged();}}}public ShareOllamaObject OllamaService{get => _ollamaService;set{if (_ollamaService != value){_ollamaService = value;OnPropertyChanged();}}}public string SelectedModel { get => _selectedModel;set{if (_selectedModel != value){_selectedModel = value;OllamaService.Ollama.SelectedModel = value;OllamaService.Chat.Model = value;OnPropertyChanged();}}}public int ExpandedBarWidth{get => _expandedBarWidth;set{if (_expandedBarWidth != value){_expandedBarWidth = value;OnPropertyChanged();}}}#endregion#region 集合/// <summary>/// 视图集合，保存视图/// </summary>public ObservableCollection<UserControl> ViewCollection { get; set; }public ObservableCollection<string> ModelListCollection{get => _modelListCollection;set{if (_modelListCollection != value){_modelListCollection = value;OnPropertyChanged();}}}public ObservableCollection<ChatRecordModel> ChatRecordCollection{get => _chatRecordCollection;set{if (_chatRecordCollection != value){_chatRecordCollection = value;OnPropertyChanged();}}}#endregion#region 命令/// <summary>/// 展开功能菜单命令/// </summary>public ICommand ExpandedMenuCommand { get; set; }/// <summary>/// 折叠功能菜单命令/// </summary>public ICommand CollapsedMenuCommand { get; set; }/// <summary>/// 切换视图命令/// </summary>public ICommand SwitchViewCommand { get; set; }/// <summary>/// 窗体关闭命令/// </summary>public ICommand ClosingWindowCommand {  get; set; }/// <summary>/// 窗体加载命令/// </summary>public ICommand LoadedWindowCommand { get; set; }/// <summary>/// 聊天记录鼠标按下命令/// </summary>public ICommand ChatRecordMouseDownCommand { get; set; }#endregion#endregion#region 构造函数public MainViewModel(){Initialize();}/// <summary>/// 初始化方法/// </summary>public void Initialize(){//初始化Ollama_ollamaService = new ShareOllamaObject();ModelListCollection = _ollamaService.ModelList;SelectedModel = _ollamaService.SelectModel;//创建命令SwitchViewCommand = new ParameterCommand(SwitchViewTrigger);LoadedWindowCommand = new EventsCommand<object>(LoadedWindowTrigger);CollapsedMenuCommand = new EventsCommand<object>(CollapsedMenuTrigger);ExpandedMenuCommand = new EventsCommand<object>(ExpandedMenuTrigger);ClosingWindowCommand = new EventsCommand<object>(ClosingWindowTrigger);ChatRecordMouseDownCommand = new EventsCommand<ChatRecordModel>(ChatRecordMouseDownTrigger);ViewCollection = new ObservableCollection<UserControl>();//添加视图到集合ViewCollection.Add(new SystemSettingView());ViewCollection.Add(new UserChatView());//默认显示窗体CurrentView = ViewCollection[1];//折叠栏折叠状态ExpandedBarWidth = 25;//加载聊天记录LoadChatRecord();}#endregion#region 命令方法/// <summary>/// 聊天记录鼠标按下/// </summary>private void ChatRecordMouseDownTrigger(ChatRecordModel obj){Debug.Print(obj.ToString());OnLoadChatRecordCallBack(obj.FullName.ToString());}/// <summary>/// 触发主视图窗体加载方法/// </summary>private void LoadedWindowTrigger(object sender){Debug.Print(sender?.ToString());var userView = ViewCollection.FirstOrDefault(obj => obj is UserChatView) as UserChatView;userView.UserWindow.Ollama = _ollamaService;LoadChatRecordEventHandler += userView.UserWindow.LoadChatRecordCallback;}/// <summary>/// 触发关闭窗体方法/// </summary>private void ClosingWindowTrigger(object obj){if (obj is CancelEventArgs cancelEventArgs){if (MessageBox.Show("确定要关闭程序吗？", "确认关闭", MessageBoxButton.YesNo) == MessageBoxResult.No){cancelEventArgs.Cancel = true; // 取消关闭}else{ClearingResources();}}}/// <summary>/// 视图切换命令触发的方法/// </summary>private void SwitchViewTrigger(object obj){Debug.WriteLine(obj.ToString());switch (obj.ToString()){case "SystemSettingView":CurrentView = ViewCollection[0];break;case "UserChatView":CurrentView = ViewCollection[1];break;case "NewUserChatView":UserChatView newChatView = new UserChatView();OllamaService.ReCreateChat();newChatView.UserWindow.Ollama = OllamaService;ViewCollection[1] = newChatView;CurrentView = newChatView;break;}}/// <summary>/// 折叠菜单触发方法/// </summary>private void CollapsedMenuTrigger(object e){ExpandedBarWidth = 25;Debug.WriteLine("折叠");}/// <summary>/// 展开菜单触发方法/// </summary>private void ExpandedMenuTrigger(object e){ExpandedBarWidth = 250;Debug.WriteLine("展开");}#endregion#region 其他方法/// <summary>/// 加载聊天记录/// </summary>private void LoadChatRecord(){_directory = $"{Environment.CurrentDirectory}\\Record";string[] files = FileOperation.GetFiles(_directory);ObservableCollection<ChatRecordModel> records = new ObservableCollection<ChatRecordModel>();string name = string.Empty;string data = string.Empty;foreach (var item in files){name = Path.GetFileNameWithoutExtension(item);data = File.ReadAllLines(item)[3];if (data.Trim().Length > 1 ){records.Add(new ChatRecordModel(records.Count, name, name, item, data.Substring(1)));}}ChatRecordCollection = records;}/// <summary>/// 触发事件：加载聊天记录回调/// </summary>private void OnLoadChatRecordCallBack(object sender){LoadChatRecordEventHandler.Invoke(sender.ToString());}/// <summary>/// 释放资源：窗体关闭时触发/// </summary>private void ClearingResources(){//ProcessService.GetPIDAndCloseByPort(11434);}#endregion}
}

PropertyChangedBase

using System.ComponentModel;
using System.Runtime.CompilerServices;namespace OfflineAI.ViewModels
{/// <summary>/// 属性变更基类/// </summary>public class PropertyChangedBase : INotifyPropertyChanged{public event PropertyChangedEventHandler? PropertyChanged;protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null){PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));}}
}

UserChatViewModel

using Markdig.Wpf;
using OfflineAI.Commands;
using OfflineAI.Services;
using OfflineAI.Sevices;
using System.Diagnostics;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Forms;
using System.Windows.Input;
namespace OfflineAI.ViewModels
{/// <summary>/// 描述：用户聊天视图模型：/// 作者：吾与谁归/// 时间: 2025年2月19日/// 更新：///    1、 2025-02-19：添加AI聊天功能，输出问题及结果到UI,并使用Markdown相关的库做简单渲染。///    2、 2025-02-20：优化了构造函数，使用无参构造，方便在设计器中直接绑定数据上下文（感觉）。///    3、 2025-02-20：滚轮滑动显示内容,提交问题后滚动显示内容，鼠标右键点击内容停止继续滚动，回答结束停止滚动。///    4、 2025-02-24：添加聊天记录保存功能。///    5、 2025-02-24：添加聊天记录加载功能，通过点击记录列表显示。/// </summary>public class UserChatViewModel:PropertyChangedBase{#region 字段、属性、集合、命令#region 字段private bool _isAutoScrolling = false;      //是否自动滚动private string _currentInputText;           //当前输入文本private string _messageContent;             //消息内容private string _directory;                  //目录private string _fileName;                   //文件名private MarkdownViewer _markdownViewer;                 //MarkdownViewer控件private ScrollViewer _scrollViewer;                     //ScrollViewer滑动控件private StringBuilder _message = new StringBuilder();   //消息字符串拼接private CancellationToken cancellationToken;            //异步线程取消标记private FileOperation _fileIO;              //文件IOprivate ShareOllamaObject _ollama;          //Ollama 对象实例private string _submitButtonName;#endregion#region 属性/// <summary>/// 提交按钮名称/// </summary>public string SubmitButtonName{get => _submitButtonName;set{if (_submitButtonName != value){_submitButtonName = value;OnPropertyChanged();}}}/// <summary>/// 消息内容/// </summary>public string? MessageContent{get => _messageContent;set{_messageContent = value;OnPropertyChanged();}}/// <summary>/// 当前输入文本/// </summary>public string CurrentInputText{get => _currentInputText;set{if (_currentInputText != value){_currentInputText = value;OnPropertyChanged();}}}/// <summary>/// 共享Ollama对象 /// </summary>public ShareOllamaObject Ollama {get => _ollama;set{if (_ollama != value){_ollama = value;OnPropertyChanged();}}}/// <summary>/// 自动滚动消息/// </summary>public bool IsAutoScrolling{get => _isAutoScrolling;set{if (_isAutoScrolling != value){_isAutoScrolling = value;OnPropertyChanged();}}}#endregion#region 集合#endregion#region 命令/// <summary>/// 展开功能菜单命令/// </summary>public ICommand LoadFileCommand { get; set; }/// <summary>/// 提交命令/// </summary>public ICommand SubmiQuestionCommand { get; set; }/// <summary>/// 鼠标滚动/// </summary>public ICommand MouseWheelCommand { get; set; }/// <summary>/// 鼠标按下/// </summary>public ICommand MouseDownCommand { get; set; }/// <summary>/// Markdown对象命令/// </summary>public ICommand MarkdownOBJCommand { get; set; }/// <summary>/// 滑动条加载/// </summary>public ICommand ScrollLoadedCommand { get; set; }#endregion#endregion#region 构造函数public UserChatViewModel(){Initialize();}#endregion#region 初始化方法/// <summary>/// 初始化方法/// </summary>public void Initialize(){//文件加载LoadFileCommand = new ParameterCommand(LoadFileTrigger);MouseWheelCommand = new EventsCommand<MouseWheelEventArgs>(MouseWheelTrigger);MouseDownCommand = new EventsCommand<MouseButtonEventArgs>(MouseDownTrigger);MarkdownOBJCommand = new EventsCommand<object>(MarkdownOBJTrigger);SubmiQuestionCommand = new ParameterlessCommand(SubmitQuestionTrigger);ScrollLoadedCommand = new EventsCommand<RoutedEventArgs>(ScrollLoadedTrigger);//SubmitButtonName = "提交";//日志记录_directory = $"{Environment.CurrentDirectory}\\Record\\";_fileName = $"{_directory}\\{DateTime.Now.ToString("yyyyMMddHHmmss")}";_fileIO = new FileOperation($"{_fileName}");//}#endregion#region 命令方法/// <summary>/// 加载文件/// </summary>private void LoadFileTrigger(object obj){OpenFileDialog openFile = new OpenFileDialog();openFile.Multiselect = true;if (openFile.ShowDialog() == DialogResult.OK){string[] files = openFile.FileNames;if (files.Count() > 1){foreach (var item in files){Debug.WriteLine(item);}}else{Debug.WriteLine(openFile.FileName);}}}/// <summary>/// 提交:  提交问题到AI并获取返回结果/// </summary>private async void SubmitQuestionTrigger(){_ = Task.Delay(1);string input = CurrentInputText;try{if (!SubmintChecked(input)) return; SubmitButtonName = "停止";_message.Clear();_isAutoScrolling = true;AppendText($"##{Environment.NewLine}");AppendText($"[{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")}]{Environment.NewLine}");AppendText($"## 【User】{Environment.NewLine}");AppendText($">{input}{Environment.NewLine}");AppendText($"{Environment.NewLine}");AppendText($"## 【AI】{Environment.NewLine}");await foreach (var answerToken in Ollama.Chat.SendAsync(input)){AppendText(answerToken);await Task.Delay(20);if (_isAutoScrolling) _scrollViewer.ScrollToEnd();//是否自动滚动}AppendText($"{Environment.NewLine}{Environment.NewLine}");}catch (Exception ex){AppendText($"Error: {ex.Message}");AppendText($"{Environment.NewLine}{Environment.NewLine}");}//回答完成_fileIO.WriteTxt($"{_fileName}", _message.ToString());CurrentInputText = string.Empty;_isAutoScrolling = false;SubmitButtonName = "提交";}/// <summary>/// 鼠标滚动上下滑动/// </summary>private void MouseWheelTrigger(MouseWheelEventArgs e){try{// 获取 ScrollViewer 对象if (e.Source is FrameworkElement element && element.Parent is ScrollViewer scrollViewer){// 获取当前的垂直偏移量double currentOffset = scrollViewer.VerticalOffset;if (e.Delta > 0){scrollViewer.ScrollToVerticalOffset(currentOffset - e.Delta);}else{scrollViewer.ScrollToVerticalOffset(currentOffset - e.Delta);}// 标记事件已处理，防止默认滚动行为e.Handled = true;}}catch (Exception ex){Debug.Print(ex.Message);}}/// <summary>/// Markdown中鼠标按下/// </summary>private void MouseDownTrigger(MouseButtonEventArgs args){if (args.LeftButton == MouseButtonState.Pressed){IsAutoScrolling = false;Debug.Print("Mouse Down...");}}/// <summary>/// 滚动栏触发/// </summary>private void ScrollLoadedTrigger(RoutedEventArgs args){if (args.Source is ScrollViewer scrollView ){_scrollViewer = scrollView;Debug.Print("Scroll loaded...");}}/// <summary>/// Markdown控件对象更新触发/// </summary>private void MarkdownOBJTrigger(object obj){if (_markdownViewer != null) return;if (obj is MarkdownViewer markdownViewer){_markdownViewer = markdownViewer;_markdownViewer.Markdown = "";}}#endregion#region 其他方法/// <summary>/// 输出文本/// </summary>public void AppendText(string newText){Debug.Print(newText);_markdownViewer.Markdown += newText;_message.Append(newText);}/// <summary>/// 提交校验/// </summary>private bool SubmintChecked(string input){if (string.IsNullOrEmpty(input)) return false;if (input.Length<2) return false;if (input.Equals("停止")) return false;return true;}#endregion#region 回调方法/// <summary>///  加载聊天记录回调/// </summary>public void LoadChatRecordCallback(string path){Debug.Print(path);_scrollViewer.ScrollToTop();_markdownViewer.Markdown = _fileIO. ReadTxt(path);}#endregion}
}

Views

UserChatView

<UserControl x:Class="OfflineAI.Views.UserChatView"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:behavior="http://schemas.microsoft.com/xaml/behaviors"xmlns:local="clr-namespace:OfflineAI.Views"xmlns:markdig ="clr-namespace:Markdig.Wpf;assembly=Markdig.Wpf"xmlns:viewmodels="clr-namespace:OfflineAI.ViewModels"mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"HorizontalAlignment="Stretch" VerticalAlignment="Stretch"><!--绑定数据上下文--><UserControl.DataContext><viewmodels:UserChatViewModel  x:Name="UserWindow"/></UserControl.DataContext><Grid><!--命令绑定事件：窗体加载时传参数Markdown控件对象。在Grid中创建，否则会出现null异常--><behavior:Interaction.Triggers><behavior:EventTrigger EventName="Loaded"><behavior:InvokeCommandAction Command="{Binding MarkdownOBJCommand}"CommandParameter="{Binding ElementName=MarkdownContent}"/></behavior:EventTrigger></behavior:Interaction.Triggers><!--定义行--><Grid.RowDefinitions><RowDefinition Height="*"/><RowDefinition Height="300"/></Grid.RowDefinitions><!--行背景色--><Border Grid.Row="0" Background="#FFFFFF"/><Border Grid.Row="1" Background="#5E5E5E"/><Grid><!--markdown 滑动条--><ScrollViewer Background="#AEAEAE"x:Name="MarkDownScrollViewer"><behavior:Interaction.Triggers><behavior:EventTrigger EventName="Loaded"><behavior:InvokeCommandAction Command="{Binding ScrollLoadedCommand}"PassEventArgsToCommand="True"/></behavior:EventTrigger></behavior:Interaction.Triggers><!--markdown--><markdig:MarkdownViewerName="MarkdownContent"><!--命令绑定事件：鼠标滚动显示内容--><behavior:Interaction.Triggers><!--鼠标滚动命令事件--><behavior:EventTrigger EventName="PreviewMouseWheel"><behavior:InvokeCommandAction Command="{Binding MouseWheelCommand}"PassEventArgsToCommand="True"/></behavior:EventTrigger><!--鼠标点击命令事件--><behavior:EventTrigger EventName="PreviewMouseDown"><behavior:InvokeCommandAction Command="{Binding MouseDownCommand}"PassEventArgsToCommand="True"/></behavior:EventTrigger></behavior:Interaction.Triggers></markdig:MarkdownViewer></ScrollViewer></Grid><!--第三行内容：显示回话内容--><Grid Grid.Row="1"  Margin="2"><!--定义三行--><Grid.RowDefinitions><RowDefinition Height="25"/><RowDefinition Height="*"/><RowDefinition Height="30"/></Grid.RowDefinitions><!--设置Border样式--><Border Grid.Row="0" Margin="150,0,150,0" Background="#5E5E5E"><Border.BorderThickness>2,2,2,0</Border.BorderThickness><Border.BorderBrush><SolidColorBrush Color="#000000"/></Border.BorderBrush></Border><Border Grid.Row="1" Margin="150,0,150,0" Background="#5E5E5E"><Border.BorderThickness>2,0,2,0</Border.BorderThickness><Border.BorderBrush><SolidColorBrush Color="#000000"/></Border.BorderBrush></Border><Border Grid.Row="2" Margin="150,0,150,0"  Background="#5E5E5E"><Border.BorderThickness>2,0,2,2</Border.BorderThickness><Border.BorderBrush><SolidColorBrush Color="#000000"/></Border.BorderBrush></Border><!--第2行内容区域--><Grid Grid.Row="1" Margin="150,0,150,0"><TextBox x:Name="InputBox" Background="#5E5E5E"Text="{Binding CurrentInputText , Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Grid.Row="1"  Margin="5" AcceptsReturn="True" VerticalScrollBarVisibility="Auto"><!--回车发送--><TextBox.InputBindings><KeyBinding Command="{Binding SubmiQuestionCommand}" Key="Enter"/></TextBox.InputBindings></TextBox></Grid><!--第3行内容区域--><Grid Grid.Row="2" Margin="150,0,150,0"><WrapPanel HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,5,0"><Button Width="50" Command="{Binding LoadFileCommand}"><Image Width="24" Height="24"Source="/Views/Resources/append24-black.png" HorizontalAlignment="Right" VerticalAlignment="Center"/></Button><Button Width="50" Command="{Binding SubmiQuestionCommand}" Content="{Binding SubmitButtonName}"></Button></WrapPanel></Grid></Grid></Grid>
</UserControl>

SystemSettingView

<UserControl x:Class="OfflineAI.Views.SystemSettingView"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:OfflineAI.Views"xmlns:viewModels="clr-namespace:OfflineAI.ViewModels"mc:Ignorable="d" d:DesignHeight="450" d:DesignWidth="800"HorizontalAlignment="Stretch" VerticalAlignment="Stretch"><Grid><StackPanel Background="#FFFFFF" Margin="5"><TextBox FontSize="36" IsReadOnly="True"HorizontalContentAlignment="Center" VerticalContentAlignment="Center">系统设置</TextBox><CheckBox Width="200" Margin="5" HorizontalAlignment="Left" IsChecked="True">是否滚动显示</CheckBox><ComboBox Width="200" Margin="5" HorizontalAlignment="Left"></ComboBox></StackPanel></Grid>
</UserControl>

Styles \ ButtonStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"><!-- 定义圆角按钮的静态样式 --><Style x:Key="RoundCornerButtonStyle" TargetType="Button"><Setter Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#04D3F2" Offset="0.6" /><GradientStop Color="#FFAB0D" Offset="2.8" /></LinearGradientBrush></Setter.Value></Setter><Setter Property="BorderBrush" Value="DarkGray"/><Setter Property="BorderThickness" Value="0"/><Setter Property="Padding" Value="5"/><Setter Property="Margin" Value="10"/><Setter Property="Width" Value="60"/><Setter Property="Height" Value="20"/><!--设置模板样式--><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="Button"><!--使用 Border 元素作为按钮的主要容器。  roundedRectangle：名称，方便在触发器中引用。Background：绑定背景色到按钮的 Background 属性。BorderBrush：绑定边框颜色到按钮的 BorderBrush 属性。BorderThickness：绑定边框宽度到按钮的 BorderThickness 属性。CornerRadius：设置边框的圆角半径为10，使按钮具有圆角效果。ContentPresenter：用于显示按钮的内容（如文本或图标）。--><Border x:Name="roundedRectangle" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="10"><!-- 设置顶部圆角 --> <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/></Border><ControlTemplate.Triggers><!-- 鼠标悬停时 --><Trigger Property="IsMouseOver" Value="True"><Setter TargetName="roundedRectangle" Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#FFB3B3" Offset="0.4" /><GradientStop Color="#D68B8B" Offset="0.7" /></LinearGradientBrush></Setter.Value></Setter></Trigger><!-- 按钮被按下时 --><Trigger Property="IsPressed" Value="True"><Setter TargetName="roundedRectangle" Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#D68B8B" Offset="0.4" /><GradientStop Color="#A05252" Offset="0.7" /></LinearGradientBrush></Setter.Value></Setter></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style><!-- 定义带图标的按钮的静态样式 --><Style x:Key="IconButtonStyle" TargetType="Button"><Setter Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#AED3D2" Offset="0.3" /><!-- 淡色 --><GradientStop Color="#F0FBFF" Offset="0.7" /><!-- 深色 --></LinearGradientBrush></Setter.Value></Setter><Setter Property="BorderBrush" Value="DarkGray"></Setter><Setter Property="BorderThickness" Value="0"></Setter><Setter Property="Padding" Value="5"></Setter><Setter Property="Margin" Value="5 5 5 5"></Setter><Setter Property="FontSize" Value="20"></Setter><!-- 调整宽度以适应图标和文本 --><Setter Property="Height" Value="50"></Setter><!-- 调整高度以适应图标和文本 --><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="Button"><Border x:Name="roundedRectangle" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="10"><!-- 使用 StackPanel 来布局图标和文本 --><StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center"><ContentPresenter Content="{TemplateBinding Content}" /></StackPanel></Border><ControlTemplate.Triggers><!-- 鼠标悬停时 --><Trigger Property="IsMouseOver" Value="True"><Setter TargetName="roundedRectangle" Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#FFB3B3" Offset="0.4" /><GradientStop Color="#D68B8B" Offset="0.7" /></LinearGradientBrush></Setter.Value></Setter></Trigger><!-- 按钮被按下时 --><Trigger Property="IsPressed" Value="True"><Setter TargetName="roundedRectangle" Property="Background"><Setter.Value><LinearGradientBrush StartPoint="0,0" EndPoint="1,0"><GradientStop Color="#D68B8B" Offset="0.4" /><GradientStop Color="#A05252" Offset="0.7" /></LinearGradientBrush></Setter.Value></Setter></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style>
</ResourceDictionary>

MainWindow

<Window x:Class="OfflineAI.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:behavior="http://schemas.microsoft.com/xaml/behaviors"xmlns:local="clr-namespace:OfflineAI"xmlns:viewmodels="clr-namespace:OfflineAI.ViewModels" WindowStartupLocation="CenterScreen"mc:Ignorable="d"Title="ChatAI" Height="800" Width="1000"Icon="/Views/Resources/app-logo128.ico"MinHeight="600" MinWidth="800"><!--绑定上下文--><Window.DataContext><viewmodels:MainViewModel></viewmodels:MainViewModel></Window.DataContext><!--样式资源--><Window.Resources><ResourceDictionary><!--资源字典: 添加控件样式--><ResourceDictionary.MergedDictionaries><ResourceDictionary Source="Views/Styles/ButtonStyle.xaml"/><ResourceDictionary Source="Views/Styles/ComboBoxStyle.xaml"/></ResourceDictionary.MergedDictionaries></ResourceDictionary></Window.Resources><!--事件命令绑定--><behavior:Interaction.Triggers><!--窗体加载命令绑定--><behavior:EventTrigger EventName="Loaded"><behavior:InvokeCommandAction Command="{Binding LoadedWindowCommand}" PassEventArgsToCommand="True"/></behavior:EventTrigger><!--窗体关闭命令绑定--><behavior:EventTrigger EventName="Closing"><behavior:InvokeCommandAction Command="{Binding ClosingWindowCommand}" PassEventArgsToCommand="True"/></behavior:EventTrigger></behavior:Interaction.Triggers><Grid><!-- 定义3列：--><Grid.ColumnDefinitions><ColumnDefinition Width="auto"/><ColumnDefinition Width="*"/><ColumnDefinition Width="10"/></Grid.ColumnDefinitions><!-- 定义2行 --><Grid.RowDefinitions><RowDefinition Height="*"/><RowDefinition Height="20"/></Grid.RowDefinitions><!-- 折叠栏 Expander --><Expander x:Name="expanderBox" Grid.Row="0" Grid.Column="0"  Header="" Background="#AABBBB" ExpandDirection="Left"IsExpanded="False"FlowDirection="LeftToRight" Width="{Binding ExpandedBarWidth}"><!--命令绑定事件--><behavior:Interaction.Triggers><!--折叠栏展开命令绑定--><behavior:EventTrigger EventName="Expanded"><behavior:InvokeCommandAction Command="{Binding ExpandedMenuCommand}" /></behavior:EventTrigger><!--折叠栏折叠命令绑定--><behavior:EventTrigger EventName="Collapsed"><behavior:InvokeCommandAction Command="{Binding CollapsedMenuCommand}" /></behavior:EventTrigger></behavior:Interaction.Triggers><ScrollViewer Background="#AEAEAE" x:Name="RecordScrollViewer"><ListBox ItemsSource="{Binding ChatRecordCollection}" Margin="5"><ListBox.ItemTemplate><DataTemplate><!-- 显示消息内容 --><TextBlock Text="{Binding Data}"  Margin="10,0,0,0"><behavior:Interaction.Triggers><!--鼠标点击命令事件--><behavior:EventTrigger EventName="PreviewMouseDown"><behavior:InvokeCommandActionCommand="{Binding DataContext.ChatRecordMouseDownCommand, RelativeSource={RelativeSource AncestorType=ListBox}}"CommandParameter="{Binding}"PassEventArgsToCommand="True"/></behavior:EventTrigger></behavior:Interaction.Triggers></TextBlock></DataTemplate></ListBox.ItemTemplate></ListBox></ScrollViewer></Expander><!-- 右侧内容区域 --><Border Background="LightGray" Grid.Row="0" Grid.Column="1" Padding="10"/><!--主要区域--><Grid Grid.Row="0" Grid.Column="1" Margin="3"><!--定义三行--><Grid.RowDefinitions><RowDefinition Height="50"/><RowDefinition Height="*"/><RowDefinition Height="350"/></Grid.RowDefinitions><!--设置背景色--><Border Grid.Row="0" Background="#99BBCC"/><Border Grid.Row="1" Background="#FFFFFF" Grid.RowSpan="2"/><!--第一行内容：左对齐内容--><WrapPanel VerticalAlignment="Center"><!--视图切换：首页--><Button x:Name="Btn_HomePage" Width="50" Height="36" FontSize="16"Style="{StaticResource IconButtonStyle}" Command="{Binding SwitchViewCommand}"CommandParameter="UserChatView"><StackPanel Orientation="Horizontal"><Image Source="Views/Resources/home24-black.png"Margin="5" Width="24" Height="24"HorizontalAlignment="Center" VerticalAlignment="Center"/></StackPanel></Button><!--视图切换：新聊天界面--><Button x:Name="Btn_Chat" Width="100" Height="36" FontSize="16"Style="{StaticResource IconButtonStyle}" Command="{Binding SwitchViewCommand}"CommandParameter="NewUserChatView"><StackPanel Orientation="Horizontal"><Image Source="Views/Resources/edit24-black.png"Margin="5" Width="24" Height="24"HorizontalAlignment="Center" VerticalAlignment="Center"/><TextBlock Text="新聊天" VerticalAlignment="Center"/></StackPanel></Button><!--模型列表--><Label Content="模型:" Margin="5" FontSize="18" VerticalAlignment="Center"/><ComboBox x:Name="Cbx_ModelList" Style="{StaticResource RoundComboBoxStyle}" ItemsSource="{Binding ModelListCollection}"SelectedItem="{Binding SelectedModel}"></ComboBox></WrapPanel><!--第一行内容：右对齐内容--><WrapPanel Margin="0,0,0,0" HorizontalAlignment="Right" VerticalAlignment="Center" ><Button Background="#99BBCC" Command="{Binding SwitchViewCommand}"CommandParameter="SystemSettingView"><Image Source="/Views/Resources/setting64.png" Margin="5"  Width="24" Height="24"HorizontalAlignment="Right" VerticalAlignment="Center"/></Button></WrapPanel><!--第二行内容：显示当前视图--><ContentControl Grid.Row="1" Margin="5,5,5,5"Content="{Binding CurrentView}" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" Grid.RowSpan="2"/></Grid></Grid>
</Window>

总结

以上为项目的全部代码。

实现功能:
1、添加折叠栏展开|折叠功能。
2、视图切换功能 1）系统设置 2) 聊天
3、关闭窗体时提示是否关闭，释放相关资源。
4、添加首页功能，和修改新聊天功能。点击新聊天会创建新的会话（Chat）。
5、窗体加载时传递Ollama对象。
6、添加了窗体加载时，加载聊天记录的功能。
7、添加AI聊天功能，输出问题及结果到UI,并使用Markdown相关的库做简单渲染。
8、优化了构造函数，使用无参构造，方便在设计器中直接绑定数据上下文（感觉）。
9、 滚轮滑动显示内容,提交问题后滚动显示内容，鼠标右键点击内容停止继续滚动，回答结束停止滚动。
10、添加聊天记录保存功能。
11、添加聊天记录加载功能，通过点击记录列表显示。

待完善：
1、使用deepseek r*模型时，控件刷新会把 的前面的一部分吞掉，使用Debug打印的是完整的问题，初步怀疑是异步刷新UI更不上的问题。
2、想使用Markdown的高级渲染功能使用起来，目前仅是简单的渲染（有空要做出来）。
3、聊天记录仅仅是显示功能，没有实现承接聊天记录回答问题。
4、参考网页端的功能开发更多功能。

项目下载地址：https://github.com/timenodes/OfflineAI