How to get the selected row values of DevExpress GridControl in WPF?

Question

I asked this question in Oct, 2012 when I was working on windows application. now when I turn to WPF application, I get the same problem again i.e How to get the selected row values of DevExpress GridControl in WPF? I've failed to find my answer on google and none of the answers in the above mentioned link is working. there is nothing like CellClick, RowClick or RowCellClick event in devexpress gridcontrol of wpf as it is in winform gridcontrol. I'll be glad if someone can solve out this problem

Edit

I have updated my application with required namespaces as you updated in your answer but the problem remains the same. i'm getting following tow errors in

<Grid.DataContext>
        <dxmvvm:ViewModelSource Type="{x:Type local:EntitiesViewModel}"/>
    </Grid.DataContext>

1- the type 'dxmvvm:ViewModelSource'" was not found in dxmvvm:ViewModelSource

2- name "EntitiesViewModel" does not exist in the namespace "clr-namespace:DXApplication1"

my application coding is as follows

XAML

<dx:DXWindow
    x:Class="DXApplication1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:DXApplication1"
    xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
    xmlns:dxe="http://schemas.devexpress.com/winfx/2008/xaml/editors"
    xmlns:dxg="http://schemas.devexpress.com/winfx/2008/xaml/grid"
    xmlns:dxmvvm="http://schemas.devexpress.com/winfx/2008/xaml/mvvm"
    Title="DXApplication" Height="700" Width="1100"
    SnapsToDevicePixels="True" UseLayoutRounding="True">

    <dx:DXWindow.Resources>
    </dx:DXWindow.Resources>

    <Grid Margin="12">
        <Grid.DataContext>
            <dxmvvm:ViewModelSource Type="{x:Type local:EntitiesViewModel}"/>
        </Grid.DataContext>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid Grid.Row="0" Margin="0,0,0,8">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="8"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="Auto"/>
            </Grid.RowDefinitions>
            <Label Content="Item1" Grid.Row="0" VerticalAlignment="Center"/>
            <Label Content="Item2" Grid.Row="1" VerticalAlignment="Center"/>
            <Label Content="Item3" Grid.Row="2" VerticalAlignment="Center"/>
            <dxe:TextEdit Text="{Binding SelectedEntity.Item1}" Grid.Row="0" Grid.Column="2"/>
            <dxe:TextEdit Text="{Binding SelectedEntity.Item2}" Grid.Row="1" Grid.Column="2"/>
            <dxe:TextEdit Text="{Binding SelectedEntity.Item3}" Grid.Row="2" Grid.Column="2"/>
        </Grid>
        <dxg:GridControl Grid.Row="1" 
                     AutoGenerateColumns="None" 
                     ItemsSource="{Binding Entities}"
                     SelectedItem="{Binding SelectedEntity}">
            <dxg:GridControl.Columns>
                <dxg:GridColumn FieldName="Item1"/>
                <dxg:GridColumn FieldName="Item2"/>
                <dxg:GridColumn FieldName="Item3"/>
            </dxg:GridControl.Columns>
            <dxg:GridControl.View>
                <dxg:TableView ShowTotalSummary="True" AllowEditing="False"/>
            </dxg:GridControl.View>
        </dxg:GridControl>
    </Grid>
</dx:DXWindow>

EntitiesViewModel

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Collections.ObjectModel;

namespace DXApplication1
{
    public class EntitiesViewModel
    {
        public EntitiesViewModel()
        {
            LoadEntities();
        }
        void LoadEntities()
        {
            Entities = new ObservableCollection<Entity>
        {
            new Entity(){ Item1="A", Item2="A0", Item3="A00"},
            new Entity(){ Item1="B", Item2="B0", Item3="B00"},
            new Entity(){ Item1="C", Item2="C0", Item3="C00"},
        };
        }
        public ObservableCollection<Entity> Entities { get; private set; }
        public virtual Entity SelectedEntity { get; set; } // Bindable property
    }
    public class Entity
    {
        public string Item1 { get; set; }
        public string Item2 { get; set; }
        public string Item3 { get; set; }
    }
}

Image for libraries, error, class etc

Answer 1

You can use DataControlBase.CurrentItemChanged event.
Here is example:
WPF:

<dxg:GridControl x:Name="gridControl1" ItemsSource="{Binding Data}" CurrentItemChanged="gridControl1_CurrentItemChanged">
</dxg:GridControl>

Event handler:

private void gridControl1_CurrentItemChanged(object sender, CurrentItemChangedEventArgs e)
{
    TBGRNo.Text = gridControl1.GetFocusedRowCellValue("GRNo").ToString();
    TBSName.Text = gridControl1.GetFocusedRowCellValue("SName").ToString();
    TBFName.Text = gridControl1.GetFocusedRowCellValue("FName").ToString();    
}