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WPF Listbox Binding from MS SQL Database 02

WPF MVVM Listbox Binding from SQL Database

Let’s see how we can bind WPF Listbox from SQL Database using MVVM methodology . WPF MVVM Listbox Binding from SQL Database.

In this example, we will Bind a WPF Listbox using ObservableCollection from WPF ViewModel. Data is fetched from MS SQL Database table : tblCountries

WPF MVVM Listbox Binding from SQL Database 01

To see How you can fetch data from MS SQL Database and bind it to WPF Listbox (Basic, not MVVM), please see this post.

Create a Listbox in your WPF form as below :

MainWindow.xaml:

<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Background="#fff"
Title="WPF ListBox from MS SQL Database" Height="350" Width="525" WindowState="Maximized" WindowStyle="ThreeDBorderWindow">
<StackPanel Orientation="Vertical">
<TextBlock Text="WPF ListBox from MS SQL Database" FontSize="25" FontWeight="Bold" Margin="5" HorizontalAlignment="Left"/>
<ListBox Name="lstBox" HorizontalAlignment="Left" VerticalAlignment="Center" ItemsSource="{Binding countries}"
Background="#fff">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left" >
<TextBlock Text="{Binding id}" Margin="2" FontWeight="Bold"/>
<TextBlock Text="{Binding country}" Margin="2" />
<TextBlock Text="{Binding ondate}" Margin="2"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Window>

In the code page of your MainWindow.xaml make changes as below :

MainWindow.xaml.cs :

using System.Windows;
using WpfApplication2.ViewModel;

namespace WpfApplication2
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
CountriesViewModel co = new CountriesViewModel();
base.DataContext = co;
}
}
}

CountriesViewModel is my class (viewmodel) using which data will get bind. In the design code for the Listbox, Itemsource is defined.

ItemsSource="{Binding countries}"

countries is our ObservableCollection in our WPF ViewModel class.

Make two folders in your Project with names ViewModel and Model respectively.

In the Model class make a Class with name Countries and edit it as below :

Model > Countries.cs :

using System;

namespace WpfApplication2.Model
{
public class Countries
{
public int id { get; set; }
public string country { get; set; }
public DateTime ondate { get; set; }

}
}

This class contains variables for the elements which will be displayed in the Listbox items. If you look at the design code :

<ListBox Name="lstBox" HorizontalAlignment="Left" VerticalAlignment="Center" ItemsSource="{Binding countries}"
Background="#fff">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left" >
<TextBlock Text="{Binding id}" Margin="2" FontWeight="Bold"/>
<TextBlock Text="{Binding country}" Margin="2" />
<TextBlock Text="{Binding ondate}" Margin="2"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

We’re defining these three as Listbox Item members. Okay.

In the ViewModel folder make a class with name CountriesViewModel.cs and edit it as following :

ViewModel > CountriesViewModel.cs :

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using WpfApplication2.Model;

namespace WpfApplication2.ViewModel
{
public class CountriesViewModel : INotifyPropertyChanged
{
static String connectionString = @"Data Source=vibes\sqlexpress;Initial Catalog=ParallelCodes;User ID=sa;Password=789;";
SqlConnection con;
SqlCommand cmd;
SqlDataAdapter adapter;
DataSet ds;
public ObservableCollection<Countries> countries { get; set; }
public CountriesViewModel()
{
FillList();
}

public void FillList()
{
try
{
con = new SqlConnection(connectionString);
con.Open();
cmd = new SqlCommand("select * from tblCountries", con);
adapter = new SqlDataAdapter(cmd);
ds = new DataSet();
adapter.Fill(ds, "tblCountries");

if (countries == null)
countries = new ObservableCollection<Countries>();

foreach (DataRow dr in ds.Tables[0].Rows)
{
countries.Add(new Countries
{
id = Convert.ToInt32(dr[0].ToString()),
country = dr[1].ToString(),
ondate = Convert.ToDateTime(dr[2].ToString())
});
}
}
catch (Exception ex)
{

}
finally
{
ds = null;
adapter.Dispose();
con.Close();
con.Dispose();
}
}

#region INotifyPropertyChanged Members

public event PropertyChangedEventHandler PropertyChanged;

private void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
#endregion
}
}

Now run your application, you will get below result :

WPF MVVM Listbox Binding from SQL Database 01

Thank You.

Also see :

WPF Datagrid with Button and Click Method

WPF Designing Material Design Tabs with Dragablz

WPF Button Style with Rounded Corners and Hover Effects

WPF Textbox With Rounded Corners

WPF Textbox Style – Changing Colors on Focus

WPF ComboBox SelectionChanged – SelectedItem Method