在对另一个窗口执行某些操作后更新wpf父窗口

本文关键字:窗口 更新 wpf 操作 另一个 执行 | 更新日期: 2023-09-27 18:29:40

我有一个名为usermanagement的wpf窗口,有一个显示所有用户的列表框,我在usermanagement窗口中有一个按钮,名为adduser,当我点击打开的名为adduser的新窗口时,这个窗口中有添加新用户的输入字段,当我保存数据时我需要什么,这个adduser窗口关闭,然后usermanagement窗口更新列表框,意味着用户再次更新(新添加的用户应在添加后显示)。现在我需要再次打开usermanagement窗口来查看新添加的用户。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>

在对另一个窗口执行某些操作后更新wpf父窗口

在主窗口(UserManagmentWindow)内执行插入操作:

UserManagmentWindow.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。。。

您可以在AddUser窗口中声明一个事件,并在按下按钮时触发该事件。

首先定义EventArgs子类

public class AddUserEventArgs : EventArgs
{
    public User AddInfo { get; private set; }
    public AddUserEventArgs(User info)
    {
        this.AddInfo = info;
    }
}

在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();
    }
}

在用户管理类中:

var window = new AddUserWindow();
window.AddedUser += (sender, e) => 
{
    // Add the info to your ObservableCollection.
    this.collection.Add(e.AddInfo);
}
window.ShowDialog();