How to update changes in hidden datagrid, WPF

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C#

WPF

DataGrid

Project as following:
1- WPF C# project
2- Datasource linked to MySQL
3- Datagrid is hidden (No edit Cell)
4- Button to perform cell value change in datagrid
Required: How to update the datasource when click the button?

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:Wpf4" x:Class="Wpf4.MainWindow"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">

    <Window.Resources>
        <local:hqdDataSet x:Key="hqdDataSet"/>
        <CollectionViewSource x:Key="ayaViewSource" Source="{Binding aya, Source={StaticResource hqdDataSet}}"/>
    </Window.Resources>

    <Grid DataContext="{StaticResource ayaViewSource}">
        <Button x:Name="FBUTT" Content="Button" HorizontalAlignment="Left" Margin="409,275,0,0" VerticalAlignment="Top" Width="75" Click="FBUTT_Click"/>

        <DataGrid x:Name="DGA" Visibility="Hidden" AutoGenerateColumns="False" EnableRowVirtualization="True" ItemsSource="{Binding}" Margin="330,10,10,68" RowDetailsVisibilityMode="VisibleWhenSelected">
            <DataGrid.Columns>
                <DataGridTextColumn x:Name="ANO" Binding="{Binding AYANO}" Header="AYANO" Width="SizeToHeader"/>
                <DataGridTextColumn x:Name="SID" Binding="{Binding SORID}" Header="SORID" Width="SizeToHeader"/>
                <DataGridTextColumn x:Name="RDF" Binding="{Binding RDQ}" Header="RDQ" Width="SizeToHeader"/>
            </DataGrid.Columns>
        </DataGrid>

    </Grid>
</Window>

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.Navigation;
using System.Windows.Shapes;

namespace Wpf4
{    
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            Wpf4.hqdDataSet hqdDataSet = ((Wpf4.hqdDataSet)(this.FindResource("hqdDataSet")));
            Wpf4.hqdDataSetTableAdapters.ayaTableAdapter hqdDataSetayaTableAdapter = new Wpf4.hqdDataSetTableAdapters.ayaTableAdapter();
            hqdDataSetayaTableAdapter.Fill(hqdDataSet.aya);
            System.Windows.Data.CollectionViewSource ayaViewSource = ((System.Windows.Data.CollectionViewSource)(this.FindResource("ayaViewSource")));
            ayaViewSource.View.MoveCurrentToFirst();
        }

        private void FBUTT_Click(object sender, RoutedEventArgs e)
        {
            for (int kw = 0; kw < 100; kw++)
            {               
                DataGridCell PCA = Datagrid.GetCell(DGA, kw, 2);                
                TextBlock TPCA = PCA.Content as TextBlock;
                if (int.Parse(TPCA.Text) == 1)
                {
                    Datagrid.GetCell(DGA, kw, 2).Content = 0;                    
                    return;
                }
            }              
        }
    }
}