C# WPF check all checkboxes

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Hello

In a form, i generate several buttons, with binding.

In a XML :

<Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition />
            <ColumnDefinition />
            <ColumnDefinition />
            <ColumnDefinition />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="0.1*" />
            <RowDefinition Height="0.85*" />
            <RowDefinition Height="0.15*" />
        </Grid.RowDefinitions>
        <ItemsControl x:Name="lvDataBinding" HorizontalContentAlignment="Stretch" BorderThickness="0" Margin="10" Grid.Row="1" Background="{x:Null}" ItemsSource="{Binding}" Grid.ColumnSpan="4" Foreground="White">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <Border BorderBrush="White" BorderThickness="1" CornerRadius="3" Margin="0,3" Grid.ColumnSpan="0" Background="Transparent" HorizontalAlignment="Left" VerticalAlignment="Top">
                        <StackPanel Orientation="Vertical" >
                            <CheckBox x:Name="cbxLignes" Tag="{Binding strCodeLigne}" Style="{StaticResource {x:Type ToggleButton}}" Content="{Binding strCodeLigne}" FontSize="22" Margin="25,15,25,15" Width="100" Height="45" IsChecked="{Binding IsChecked}" Checked="cbxLignes_Checked" Unchecked="cbxLignes_Unchecked" />
                        </StackPanel>
                    </Border>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel />
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
        <Button Name="btnValider" Grid.Row="4" Grid.Column="2" Content="Valider" Background="#5491fe" Margin="95,5,5,5"  Click="btnValider_Click" />
        <Button Name="btnTous" Grid.Row="4" Grid.Column="0" Content="Tous" Background="#5491fe" Margin="95,5,5,5" Click="btnTous_Click"  />
        <Button Name="btnAucuns" Grid.Row="4" Grid.Column="1" Content="Aucun" Background="#5491fe" Margin="5,5,95,5"  />
        <Button Name="btnAnnuler" Grid.Row="4" Grid.Column="3" Content="Annuler" Background="#5491fe" Margin="5,5,95,5" Click="btnAnnuler_Click"  />
    </Grid>

My binding is generate with SQL values :

for (int i = 0; i < dvLignes.Count; i++)
            {
                clLignes = new CL_Lignes();

                //clLignes.strIDLigne = dvLignes[i]["IDLigne"].ToString().Trim();
                clLignes.strCodeLigne = dvLignes[i]["CodeLigne"].ToString().Trim();
                //clLignes.strDesLigne = dvLignes[i]["DesLigne"].ToString().Trim();

                lstLignes.Add(clLignes);

                this.DataContext = lstLignes;
            }

I need with a button, check all checkboxes generate. I don't know in advance how and which text buttons has generate

Thank you in advance.

What I have tried:

I try to find a loop, but i don't found

Posted 21-Sep-17 19:59pm

Steve15f

Updated 21-Sep-17 21:30pm

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Pete O'Hanlon · Accepted Answer · 2017-09-21T21:30:00

Solution 1

So, you have a collection that contains, as one of its properties, a boolean called IsChecked. First of all, make sure that IsChecked is written in such a way that it raises the PropertyChanged event. Then, loop over your collection and set IsChecked = true, to check them. The binding engine will detect the PropertyChanged event being fired, and will update the value on screen as appropriate.

Posted 21-Sep-17 21:30pm

Pete O'Hanlon

Comments

Steve15f 22-Sep-17 3:44am

Hello

Just, how make this : Then, loop over your collection

I have add this code , when i learn for my data on my another topic

public partial class SelectionLigne : Window, INotifyPropertyChanged
{
#region Évenement qui permet de déclencher l'événement INotifyPropertyChanged et mettre à jour le binding
public void Set<tvalue>(ref TValue field, TValue newValue, [CallerMemberName] string propertyName = "")
{
if (EqualityComparer<tvalue>.Default.Equals(field, default(TValue)) || !field.Equals(newValue))
{
field = newValue;

if (PropertyChanged != null)
PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}

public event PropertyChangedEventHandler PropertyChanged;
#endregion

private bool IsChecked;
public bool bChecked
{
get { return IsChecked; }
set { Set(ref IsChecked, value); }
}

Pete O'Hanlon 22-Sep-17 3:57am

Where does that contain your reference to lstLignes? That's your collection as it's the one you're binding to. All you need to do is something like this:
foreach (var item in lstLignes)
{
item.IsChecked = true;
}

Steve15f 22-Sep-17 4:02am

Great thank you

I begin to understand binding!

Thank you very much

Pete O'Hanlon 22-Sep-17 5:48am

You're welcome