there a way to validate that this not using a datagrid ?? or that this has completely lost focus?

Question

I have a datagrid in WPF, I want to lose focus when you can run an event. I tried it with some events but to leave the cell or end a row is activated, I what I want is that when it comes completely datagrid activated, fails to find an event that fits.

Your question is garbled. the "LostFocus" event is fired when you leave the datagrid control — BugFinder, Jun 09 '16 at 13:11
Hello @BugFinder, I used the event indicas me but shooting 1. When I enter to edit the cell, 2. when I press the tab key to change cells. I just want to be active when you leave the datagrid. — Cristian, Jun 09 '16 at 13:32
@BugFinder Hi, I'm using the LostFocus event. but when I go to edit the cell the event runs. Also when I press the tab key, the event runs, I just want to run when I leave the datagrid. — Cristian, Jun 09 '16 at 13:40
When you press `Tab` key `FocusManager` will pass focus to next control. Do you want to [disable Tab navigation](http://stackoverflow.com/q/4210659/1997232) or what? Try to describe what is that you call "leave datagrid"? — Sinatr, Jun 09 '16 at 13:45
Hello @Sinatr, I mean the DataGrid control. when I press the tab key event "LostFocus" starts and I want to start when I leave the datagrid. I update the post and put a picture of the datagrid. — Cristian, Jun 09 '16 at 14:02

Abdul Mateen Mohammed · Accepted Answer · 2016-06-10T07:14:35.443

Try LostFocus event on the DataGrid and the DataGridCell, check the below code and keep breakpoints in the events DataGrid_LostFocus, OnCellLostFocus and OnCellGotFocus, click on a cell then click another cell and see that events are executed this way, OnCellLostFocus - - > OnCellGotFocus - - > DataGrid_LostFocus Maybe this can help you try it out...

UPDATED ANSWER:

The LostFocus event on the DataGrid will suffice, check the modified answer below

<Window x:Class="WpfApplication1.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:WpfApplication1"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition/>
            <ColumnDefinition/>
        </Grid.ColumnDefinitions>
        <DataGrid x:Name="MyDataGrid"
                  LostFocus="DataGrid_LostFocus" 
                  ItemsSource="{Binding Persons}">
            <DataGrid.Columns>
                <DataGridTextColumn Header="FirstName" Width="*"/>
                <DataGridTextColumn Header="LastName" Width="*"/>
            </DataGrid.Columns>
        </DataGrid>

        <TextBox Grid.Column="1"/>
    </Grid>
</Window>

namespace WpfApplication1
{
    using System.Collections.Generic;
    using System.Windows;

    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public List<Person> Persons { get; set; }

        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
            Persons = new List<Person>
            {
                new Person { FirstName = "First", LastName = "Last" },
                new Person { FirstName = "First", LastName = "Last" }
            };
        }

        private void DataGrid_LostFocus(object sender, RoutedEventArgs e)
        {
            if (!MyDataGrid.IsKeyboardFocusWithin)
            {
                MessageBox.Show("DataGrid LostFocus called");
            }
        }
    }

    public class Person
    {
        public string FirstName { get; set; }

        public string LastName { get; set; }
    }
}

Hi @abdul mateen, thanks for the help. I still do not succeed, the message `MessageBox.Show ("DataGrid LostFocus called");` It never is shown, even if I leave the grid. — Cristian, Jun 09 '16 at 23:13
Sorry I couldn't set the flags correctly because the OnCellGotFocus is firing when I set focus on the textbox i.e. outside the DataGrid, I was thinking the way these events are executed might give you a hint, see my updated answer — Abdul Mateen Mohammed, Jun 10 '16 at 07:11

there a way to validate that this not using a datagrid ?? or that this has completely lost focus?

1 Answers1