Add,Change and Delete a user using WPF

Posted by Pardha Saradhi in WPF category on 2/27/2014 for Beginner level | Points: 250 | Views : 4313

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Hi friends today we will discuss Add,Change,Delete functionality in WPF.

Introduction

Hi friends today we will discuss Add,Change,Delete functionality in WPF

Once open the Visual Studio click on File Click on the Project .

As you can see there are many application(s) from them Select WPF application
At name rename it as per your requirement .

Right click on the project and click on add from there click on window for adding a new window to the project
Rename the window as per your requirement

Drag a Dockpanel from tools .
Drag a three Button and rename it as showed above .
Now its time to enable the functionality using the below code we can achieve it.

<Window x:Class="DataBindingExamples.Window3"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="Window3" Height="300" Width="300">
    <DockPanel Margin="10">
        <StackPanel DockPanel.Dock="Right" Margin="10,0,0,0">
            <Button Name="btnAddUser" Click="btnAddUser_Click">Add user</Button>
            <Button Name="btnChangeUser" Click="btnChangeUser_Click" Margin="0,5">Change user
	    </Button>
            <Button Name="btnDeleteUser" Click="btnDeleteUser_Click">Delete user</Button>
        </StackPanel>
        <ListBox Name="lbUsers" DisplayMemberPath="Name"></ListBox>
    </DockPanel>
</Window>

Window3.xaml.cs

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.ComponentModel;
using System.Collections.ObjectModel;

namespace DataBindingExamples
{
    /// <summary>
    /// Interaction logic for Window3.xaml
    /// </summary>
    public partial class Window3 : Window
    {
        private ObservableCollection<User> users = new ObservableCollection<User>();

        public Window3()
        {
            InitializeComponent();
            
            users.Add(new User() { Name = "Jojo" });
            users.Add(new User() { Name = "Popat Lal" });
            users.Add(new User() { Name = "Santa Singh" });
            users.Add(new User() { Name = "Banta Singh" });

            lbUsers.ItemsSource = users;
        }

        private void btnAddUser_Click(object sender, RoutedEventArgs e)
        {
            users.Add(new User() { Name = "Steve" });
        }

        private void btnChangeUser_Click(object sender, RoutedEventArgs e)
        {
            if (lbUsers.SelectedItem != null)
                (lbUsers.SelectedItem as User).Name = "Smith";
        }

        private void btnDeleteUser_Click(object sender, RoutedEventArgs e)
        {
            if (lbUsers.SelectedItem != null)
                users.Remove(lbUsers.SelectedItem as User);
        }
    }

    public class User:INotifyPropertyChanged
    {
        private String _name;

        public String Name
        {
            get
            {
                return this._name;
            }
            set
            {
                if (this._name != value)
                {
                    this._name = value;
                    this.NotifyPropertyChanged("Name");
                }
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void NotifyPropertyChanged(String propname)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propname));
            }
        }
    }
}