Refresh parent window Grid from child window in WPF C#

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Hello Developers,

I am in the situation where I want to refresh parent window Grid from child window button in WPF C#.

Let me explain.

I have a parent page where there is a list of records in Grid.
When I double click on any of the cell it opens one child window
where user can edit that row detail. After updating child window should be closed
and parent Grid should be refreshed.

Now problem is I am able to update the record in database from the child page
but I am not able to reflact that changes in parent window Grid.

I tried with raising buttom click event of parent page from child page but its not working.

Please guys any clue?
I need help to solve this problem.

Thanks in advance.

Posted 20-Sep-15 0:20am

kailash_tandel87

Updated 20-Nov-20 1:57am

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format C: /U 19-Nov-15 4:37am

What if both the parent and child are user controls, will this work on them as well?

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Wendelius · Accepted Answer · 2015-09-20T00:40:00

Not sure if I understand the situation correctly but you could define an event on the child window and subscribe that event on the parent window when yuo create the child.

Consider the following example:
Parent window XAML

XML

<Window x:Class="CP_CS_WPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:CP_CS_WPF"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" 
        Width="525">
    <Grid>
        <Button Content="Launch child" Click="Button_Click"/>
    </Grid>
</Window>

Parent window code

C#

using System;
using System.Windows;
namespace CP_CS_WPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            Window1 window1 = new Window1();
            window1.DataChanged += Window1_DataChanged;
            window1.Show();
        }

        private void Window1_DataChanged(object sender, EventArgs e)
        {
            System.Windows.MessageBox.Show("Something has happened", "Parent");
        }
    }
}

Child window XAML

XML

<Window x:Class="CP_CS_WPF.Window1"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:CP_CS_WPF"
        mc:Ignorable="d"
        Title="Window1" 
        Height="300"
        Width="300">
    <Grid>
        <Button Content="Something happens" Click="Button_Click" />
    </Grid>
</Window>

Child window code

C#

using System;
using System.Windows;

namespace CP_CS_WPF
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public delegate void DataChangedEventHandler(object sender, EventArgs e);

        public event DataChangedEventHandler DataChanged;

        public Window1()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            DataChangedEventHandler handler = DataChanged;

            if (handler != null)
            {
                handler(this, new EventArgs());
            }
        }
    }
}