WPF实战学习笔记18-优化设计TodoView

优化设计TodoView

修复新增项目无法编辑问题

更新MyToDo.Api/Service/ToDoService.cs

public async Task<ApiReponse> AddAsync(Todo model)
{try{var todo = mapper.Map<Todo>(model);await work.GetRepository<Todo>().InsertAsync(todo);if (await work.SaveChangesAsync() > 0)return new ApiReponse(true, todo);return new ApiReponse(false);}catch (Exception ex){return new ApiReponse(false, ex);}
}

更新MyToDo.Api/Service/MemoService.cs

        public async Task<ApiReponse> AddAsync(Memo model){try{var memo = mapper.Map<Memo>(model);await work.GetRepository<Memo>().InsertAsync(memo);if (await work.SaveChangesAsync() > 0)return new ApiReponse(true, memo);return new ApiReponse(false);}catch (Exception ex){return new ApiReponse(false, ex);}}

增加了对完成状态的区分

更新MyToDo.Api/Service/TodoView.xaml

<ItemsControl.ItemTemplate><DataTemplate><Border MinWidth="200" Margin="10"><Border.Style><Style TargetType="Border"><Style.Triggers><DataTrigger Binding="{Binding Status}" Value="0"><Setter Property="Background" Value="#1E90FF" /></DataTrigger><DataTrigger Binding="{Binding Status}" Value="1"><Setter Property="Background" Value="#3CB371" /></DataTrigger></Style.Triggers></Style></Border.Style><Grid MinHeight="150">

增加了选项卡删除功能

更新删除请求URI

更新MyToDo.Api/Service/Baservice.cs

    public async Task<ApiResponse> DeleteAsync(int id){BaseRequest request = new BaseRequest();request.Method = RestSharp.Method.DELETE;request.Route = $"api/{ServiceName}/Delete?todoid={id}";return await client.ExecuteAsync(request);}

添加删除命令并初始化

更新文件：MyToDo/ViewModel/TodoViewModel.cs

添加内容：

/// <summary>
/// 删除项
/// </summary>
public DelegateCommand<ToDoDto> DeleteCommand { get; set; }/// <summary>
/// 删除指定项
/// </summary>
/// <param name="dto"></param>
async private void DeleteItem(ToDoDto dto)
{var delres = await service.DeleteAsync(dto.Id);if (delres.Status){var model = TodoDtos.FirstOrDefault(t => t.Id.Equals(dto.Id));TodoDtos.Remove(dto);}
}  

更新内容

public TodoViewModel(ITodoService service,IContainerProvider provider) : base(provider)
{//初始化对象TodoDtos = new ObservableCollection<ToDoDto>();  RightContentTitle = "添加血雨待办";//初始化命令SelectedCommand         = new DelegateCommand<ToDoDto>(Selected);OpenRightContentCmd     = new DelegateCommand(Add);ExecuteCommand          = new DelegateCommand<string>(ExceuteCmd);DeleteCommand           = new DelegateCommand<ToDoDto>(DeleteItem);this.service = service;
}

UI添加删除按钮

更新文件：MyToDo/Views/TodoView.cs

更新内容：

<Grid MinHeight="150"><!--  给项目添加行为  --><i:Interaction.Triggers><i:EventTrigger EventName="MouseLeftButtonUp"><i:InvokeCommandAction Command="{Binding DataContext.SelectedCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}" CommandParameter="{Binding}" /></i:EventTrigger></i:Interaction.Triggers><Grid.RowDefinitions><RowDefinition Height="auto" /><RowDefinition /></Grid.RowDefinitions><DockPanel Panel.ZIndex="2" LastChildFill="False"><TextBlockMargin="10,10"FontFamily="黑体"FontSize="14"Text="{Binding Title}" /><!--<md:PackIconMargin="10,10"VerticalContentAlignment="Top"DockPanel.Dock="Right"Kind="More" />--><md:PopupBoxMargin="5"Panel.ZIndex="1"DockPanel.Dock="Right"><ButtonPanel.ZIndex="2"Command="{Binding DataContext.DeleteCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ItemsControl}}"CommandParameter="{Binding}"Content="删除" /></md:PopupBox></DockPanel>

更改控制器

更新文件：MyToDo.Api/Controllers/TodoController.cs

更新内容：

public async Task<ApiReponse> Delete(int todoid)=> await service.DeleteAsync(todoid);

增加查询结果为空的图片

增加转换器

添加文件：MyToDo/Common/Converters/IntToVisibilityConveter.cs

更新内容：

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;
using System.Windows.Media;namespace Mytodo.Common.Converters
{[ValueConversion(typeof(Color), typeof(Brush))]public class ColorToBrushConverter : IValueConverter{public object Convert(object value, Type targetType, object parameter, CultureInfo culture){if (value is Color color){return new SolidColorBrush(color);}return Binding.DoNothing;}public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture){if (value is SolidColorBrush brush){return brush.Color;}return default(Color);}}
}

修改UI

添加资源、命名空间

更新文件：MyToDo/Ｖｉｅｗｓ/Converters/TodoView.xaml.cs

更新内容：

xmlns:cv="clr-namespace:Mytodo.Common.Converters"   <UserControl.Resources><ResourceDictionary><cv:IntToVisibilityConveter x:Key="IntToVisility" /></ResourceDictionary>
</UserControl.Resources>

添加相关元素

FontSize="14" />
<StackPanelGrid.Row="1"VerticalAlignment="Center"Visibility="{Binding TodoDtos.Count, Converter={StaticResource IntToVisility}}"><ImageWidth="120"Height="120"Source="/Images/nores.jpg" /><TextBlockMargin="0,10"HorizontalAlignment="Center"FontSize="18"Text="尝试添加一些待办事项，以便在此处查看它们。" />
</StackPanel>
<ItemsControl

增加了根据状态查询的功能

Mytodo.Service/ITodoService增加GetAllFilterAsync接口

using Mytodo.Common.Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using MyToDo.Share.Models;
using MyToDo.Share.Contact;
using MyToDo.Share.Parameters;
using MyToDo.Share;namespace Mytodo.Service
{public interface ITodoService:IBaseService<ToDoDto>{Task<ApiResponse<PagedList<ToDoDto>>> GetAllFilterAsync(TodoParameter parameter);}
}

修改了控制器

MyToDo.Api.Controllers/TodoController

[HttpGet]
public async Task<ApiReponse> GetAll([FromQuery] TodoParameter param) => await service.GetAllAsync(param);

增加IToDoService接口

MyToDo.Api.Service/IToDoService

namespace MyToDo.Api.Service
{public interface IToDoService : IBaseService<Todo>{Task<ApiReponse> GetAllAsync(TodoParameter parameter);}
}

增加所需字段，属性，以及所需要的方法

更新文件：Mytodo.ViewModels/TodoViewModel.cs

/// <summary>
/// 项目状态
/// </summary>
public int SelectIndex
{get { return selectIndex; }set { selectIndex = value; RaisePropertyChanged(); }
}private int selectIndex;/// <summary>
/// 保存消息
/// </summary>
private async void Save()
{try{if (string.IsNullOrWhiteSpace(CurrDto.Title) || string.IsNullOrWhiteSpace(CurrDto.Content))return;UpdateLoding(true);if(CurrDto.Id>0) //编辑项{var updateres = await service.UpdateAsync(CurrDto);if (updateres.Status){UpdateDataAsync();}else{MessageBox.Show("更新失败");}}else{       //添加项var add_res =   await service.AddAsync(CurrDto);//刷新if (add_res.Status) //如果添加成功{TodoDtos.Add(add_res.Result);}else{MessageBox.Show("添加失败");}}}catch{}finally{IsRightOpen = false;//卸载数据加载窗体UpdateLoding(false);}
}/// <summary>
/// 打开待办事项弹窗
/// </summary>
void Add()
{CurrDto = new ToDoDto();IsRightOpen = true;
}private void Query()
{GetDataAsync();
}/// <summary>
/// 根据条件更新数据
/// </summary>
async void UpdateDataAsync()
{int? Status = SelectIndex == 0 ? null : SelectIndex == 2 ? 1 : 0;var todoResult = await service.GetAllFilterAsync(new MyToDo.Share.Parameters.TodoParameter { PageIndex = 0, PageSize = 100, Search = SearchString, Status = Status });if (todoResult.Status){todoDtos.Clear();foreach (var item in todoResult.Result.Items)todoDtos.Add(item);}
}/// <summary>
/// 获取所有数据
/// </summary>
async void GetDataAsync()
{//调用数据加载页面UpdateLoding(true);//更新数据UpdateDataAsync();//卸载数据加载页面UpdateLoding(false);
}

UI层增加绑定的界面

<ComboBox Margin="5" SelectedIndex="{Binding CurrDto.Status}"><ComboBoxItem Content="已完成" FontSize="12" /><ComboBoxItem Content="未完成" FontSize="12" />
</ComboBox>
<StackPanelGrid.Row="1"VerticalAlignment="Center"Visibility="{Binding TodoDtos.Count, Converter={StaticResource IntToVisility}}"><md:PackIconWidth="120"Height="120"HorizontalAlignment="Center"Kind="ClipboardText" /><TextBlockMargin="0,10"HorizontalAlignment="Center"FontSize="18"Text="尝试添加一些待办事项，以便在此处查看它们。" />

增加了IToDoService接口所对应的实现

public async Task<ApiReponse> GetAllAsync(QueryParameter parameter)
{try{var repository = work.GetRepository<Todo>();var todos = await repository.GetPagedListAsync(predicate:x => string.IsNullOrWhiteSpace(parameter.Search) ? true : x.Title.Contains(parameter.Search),pageIndex: parameter.PageIndex,pageSize: parameter.PageSize,orderBy: source => source.OrderByDescending(t => t.CreateDate));return new ApiReponse(true, todos);}catch (Exception ex){return new ApiReponse(ex.Message,false);}
}

修复更新操作无法更新状态的bug

    public async Task<ApiReponse> UpdateAsync(Todo model){try{var dbtodo = mapper.Map<Todo>(model);//获取数据var resposity = work.GetRepository<Todo>();//var todo = await resposity.GetFirstOrDefaultAsync(predicate: x => x.Id.Equals(dbtodo.Id));if(todo == null)return new ApiReponse("修改失败，数据库中无给定条件的数据项",false);todo.Title= dbtodo.Title;todo.UpdateDate=DateTime.Now;todo.CreateDate = dbtodo.CreateDate;todo.Content = dbtodo.Content;todo.Status = dbtodo.Status;resposity.Update(todo);if (await work.SaveChangesAsync() > 0)return new ApiReponse(true);return new ApiReponse(false);}catch (Exception ex){return new ApiReponse(ex.Message, false);}}

修复当Search为空时查询失败的bug

Mytodo.Service/TodoService.cs

public async Task<ApiResponse<PagedList<ToDoDto>>> GetAllFilterAsync(TodoParameter parameter)
{BaseRequest request = new BaseRequest();request.Method = RestSharp.Method.GET;var parameter_search = parameter.Search;if(parameter_search==null){request.Route = $"api/ToDo/GetAll?pageIndex={parameter.PageIndex}" +$"&pageSize={parameter.PageSize}" +$"&status={parameter.Status}";}elserequest.Route = $"api/ToDo/GetAll?pageIndex={parameter.PageIndex}" +$"&pageSize={parameter.PageSize}" +$"&search={parameter.Search}" +$"&status={parameter.Status}";return await client.ExecuteAsync<PagedList<ToDoDto>>(request);
}