Discussion :

[djmic]

Bonjour,

Pourriez-vous me donner l'équivalent de ce code Behind d'un binding en XAML?

voici le code de mon UserControl. Je lie le texte de ma textbox à ma Dependency Property Valeur.

Code Behind
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Code C# :

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 Verification_Lotto
{
    /// <summary>
    /// Interaction logic for NumericUpDown.xaml
    /// </summary>
    public partial class NumericUpDown : UserControl
    {
 
        Binding bind;
 
        public int Valeur
        {
            get { return (int)GetValue(ValeurProperty); }
            set { SetValue(ValeurProperty, value); }
        }
 
        public static readonly DependencyProperty ValeurProperty =
            DependencyProperty.Register("Valeur", typeof(int), typeof(NumericUpDown), new UIPropertyMetadata(0, onValeurPropertyChanged ));
 
        private static void onValeurPropertyChanged(DependencyObject source, DependencyPropertyChangedEventArgs e)
        {
 
        }
 
        public NumericUpDown()
        {
            InitializeComponent();
 
            bind = new Binding();
            bind.Source = this;
            bind.Mode = BindingMode.TwoWay;
            bind.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
            bind.Path = new PropertyPath("Valeur");
            this.txtNum.SetBinding(TextBox.TextProperty, bind);
 
        }
 
        private void btPlus_Click(object sender, RoutedEventArgs e)
        {
            if (this.Valeur < 42)
            {
                this.Valeur = this.Valeur + 1;
            }
            /*txtNum.Text = this.Valeur.ToString();*/
        }
 
        private void btMoins_Click(object sender, RoutedEventArgs e)
        {
            if (this.Valeur > 1)
            {
                this.Valeur = this.Valeur - 1;
            }
            /*txtNum.Text = this.Valeur.ToString();*/
        }
 
        private void txtNum_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            Key tmp = e.Key;
            if (!(tmp.ToString() == "D1" || tmp.ToString() == "NumPad1" ||
                  tmp.ToString() == "D2" || tmp.ToString() == "NumPad2" ||
                  tmp.ToString() == "D3" || tmp.ToString() == "NumPad3" ||
                  tmp.ToString() == "D4" || tmp.ToString() == "NumPad4" ||
                  tmp.ToString() == "D5" || tmp.ToString() == "NumPad5" ||
                  tmp.ToString() == "D6" || tmp.ToString() == "NumPad6" ||
                  tmp.ToString() == "D7" || tmp.ToString() == "NumPad7" ||
                  tmp.ToString() == "D8" || tmp.ToString() == "NumPad8" ||
                  tmp.ToString() == "D9" || tmp.ToString() == "NumPad9" ||
                  tmp.ToString() == "D0" || tmp.ToString() == "NumPad0" ||
                  tmp.ToString() == "Back" || tmp.ToString() == "Return" || 
                  tmp.ToString() == "Enter" || tmp.ToString() == "Tab"))
            {
                e.Handled = true;
            }
        }
 
        private void txtNum_LostFocus(object sender, RoutedEventArgs e)
        {
            if (txtNum.Text == "" || txtNum.Text == " ")
            {
                txtNum.Text = "1";
            }
        }
 
    }
}

Code Xaml
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Code XAML :

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<UserControl x:Class="Verification_Lotto.NumericUpDown"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Height="24" Width="100">
    <Grid>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="75"></ColumnDefinition>
            <ColumnDefinition></ColumnDefinition>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition></RowDefinition>
            <RowDefinition></RowDefinition>
        </Grid.RowDefinitions>
 
        <TextBox Name="txtNum" Grid.Column="0" Grid.Row="0" Grid.RowSpan="2" PreviewKeyDown="txtNum_PreviewKeyDown" LostFocus="txtNum_LostFocus"></TextBox>
        <RepeatButton Name="btPlus" Grid.Column="1" Grid.Row="0" Content="+" FontSize="8" VerticalContentAlignment="Top" Click="btPlus_Click" Padding="0"></RepeatButton>
        <RepeatButton Name="btMoins" Grid.Column="1" Grid.Row="1" Content="-" FontSize="8" VerticalContentAlignment="Top" Click="btMoins_Click" Padding="0"></RepeatButton>
 
    </Grid>
</UserControl>

Un grand merci.