2

我有一个名为 usermanagement 的 wpf 窗口,并且有一个显示所有用户的列表框,我在 usermanagement 窗口中有一个名为 add user 的按钮,当我点击那个名为 adduser 的新窗口打开时,在这个窗口中有输入字段来添加新用户,当我保存数据并且此添加用户窗口关闭然后用户管理窗口更新列表框时我需要什么,这意味着用户再次更新(新添加的用户应该在添加后显示在那里)。目前我需要再次打开用户管理窗口才能看到新添加的用户。谢谢!

这是下面的代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Collections;
using Model;

namespace Views
{
    /// <summary>
    /// Interaction logic for frmUserManagement.xaml
    /// </summary>

    public partial class frmUserManagement : Window 
    {
        public frmUserManagement()
        {
            InitializeComponent();
        }
        public void window_loaded(object sender, RoutedEventArgs e)
        {
            load_users();
        }
        public void load_users()
        {
            RST_DBDataContext conn = new RST_DBDataContext();
            var users = (from s in conn.TblUsers
                         select s.UserName).ToList();
            Login_Names.ItemsSource = users;
        }
        private void add_user(object sender, RoutedEventArgs e)
        {
            adduser AddUserWindow = new adduser();
            AddUserWindow.ShowDialog();
        }


    }
}

在 xaml 文件中有

<Grid>
        <ListBox Name="Login_Names" HorizontalAlignment="Left" Height="337" Margin="10,47,0,0" Padding="0,0,0,0" VerticalAlignment="Top" Width="156">
<Button Content="Add" HorizontalAlignment="Left" Margin="10,404,0,0" VerticalAlignment="Top" Width="75" Click="add_user"/>
</Grid>
4

2 回答 2

1

在主窗口 (UserManagmentWindow) 内执行插入操作:

用户管理窗口.cs:

 // Inside add button handler open adduser window as dialog box...
 var result = adduser.ShowDialog();
 if(result == true){
     // user pressed OK button...
     // insert new user in database
     // refresh UserManagmentWindow
 }

如果您需要更多详细信息,请发布您的代码...

于 2013-08-31T08:11:43.183 回答
0

您可以在您的 AddUser 窗口中声明一个事件,并在您按下按钮时触发该事件。

首先定义您的 EventArgs 子类

public class AddUserEventArgs : EventArgs
{
    public User AddInfo { get; private set; }

    public AddUserEventArgs(User info)
    {
        this.AddInfo = info;
    }
}

在您的 AddUser 类中:

public event EventHandler<AddUserEventArgs> AddedUser;

private void Button_Click(Object sender, RoutedEventArgs)
{
    User info = new User();
    // Realize your validation here...

    // If validation is Okay, then..
    if (OK)
    {
        if (this.AddedUser != null)
            this.AddedUser(this, new AddUserEventArgs(info));
        this.Close();
    }
}

在您的 UserManagement 类中:

var window = new AddUserWindow();
window.AddedUser += (sender, e) => 
{
    // Add the info to your ObservableCollection.
    this.collection.Add(e.AddInfo);
}
window.ShowDialog();
于 2013-08-31T10:09:00.963 回答