UserVM.cs
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using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using HandyControl.Data;
using HHECS.BllModel;
using HHECS.RobotTool.Model;
using HHECS.RobotTool.View.AccountView;
using LinqKit;
using System.Collections;
using System.Collections.ObjectModel;
using System.Linq.Expressions;
using System.Windows;
using MessageBox = HandyControl.Controls.MessageBox;
namespace HHECS.RobotTool.ViewModel.AccountVM
{
public partial class UserVM : ViewModelBase
{
[ObservableProperty]
private string account = null!;
[ObservableProperty]
private string userName = null!;
[ObservableProperty]
private ObservableCollection<User> users = new ObservableCollection<User>();
public UserVM()
{
LoadData();
}
[RelayCommand]
public void Serach()
{
var result = LoadData();
if (!result.Success)
{
MessageBox.Error($"[{nameof(CommunicationVM)}]加载数据失败.{result.Msg}");
}
}
[RelayCommand]
public void Add()
{
var view = new UserAddOrEditView();
var result = view.ShowDialog();
if (result == true)
{
LoadData();
}
}
[RelayCommand]
public void Edit(int userId)
{
var vm = new UserAddOrEditView(userId);
var result = vm.ShowDialog();
if (result == true)
{
LoadData();
}
}
[RelayCommand]
public void Delete(int userId)
{
try
{
var result = MessageBox.Ask($"确认删除数据？");
if (result != MessageBoxResult.OK)
{
return;
}
_freeSql.Delete<User>().Where(x => x.Id == userId).ExecuteAffrows();
_freeSql.Delete<UserRole>().Where(x => x.UserId == userId).ExecuteAffrows();
LoadData();
MessageBox.Success("删除数据成功");
}
catch (Exception ex)
{
MessageBox.Error($"删除数据失败.{ex.Message}");
}
}
[RelayCommand]
public void BatchDelete(IList sender)
{
try
{
var temps = sender.Cast<User>().ToList();
if (temps.Count == 0)
{
MessageBox.Warning("未选中任何数据！");
return;
}
var result = MessageBox.Ask($"确认删除选中数据？");
if (result == MessageBoxResult.OK)
{
return;
}
var communicationIds = temps.Select(x => x.Id).ToList();
_freeSql.Delete<User>().Where(x => communicationIds.Contains(x.Id)).ExecuteAffrows();
LoadData();
MessageBox.Success($"成功删除{temps.Count}条数据");
}
catch (Exception ex)
{
MessageBox.Error($"删除失败.{ex.Message}");
}
}
/// <summary>
/// 页码改变
/// </summary>
[RelayCommand]
private void PageUpdated(FunctionEventArgs<int> info)
{
PageIndex = info.Info;
LoadData();
}
private BllResult LoadData()
{
try
{
var query = _freeSql.Queryable<User>().Where(GetFilter());
var total = query.Count();
MaxPage = total / PageSize + Convert.ToInt32(total % PageSize != 0);
var result = query.Page(PageIndex, PageSize).ToList();
Users = new ObservableCollection<User>(result);
return BllResultFactory.Success();
}
catch (Exception ex)
{
return BllResultFactory.Error(ex.Message);
}
}
private Expression<Func<User, bool>> GetFilter()
{
var filter = PredicateBuilder.New<User>(true);
if (!string.IsNullOrWhiteSpace(Account))
{
filter = filter.And(x => x.Account.Contains(Account));
}
if (!string.IsNullOrWhiteSpace(UserName))
{
filter = filter.And(x => x.UserName.Contains(UserName));
}
return filter;
}
}
}