Unable to set focus to datepicker using attached property in wpf

[dashingsidds]

Hi Experts, I have a custom datepicker with me and i am trying to set focus to this using attached property. I have the toolkit version 3.5.50211.1 which was released on Feb 2010. The focus is working fine when i do DatePicker.Focus(); in my code. My custom datepicker code is as follows: -- My DatePicker

using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Windows.Controls;
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;
using System.Data;
using System.ComponentModel;
using System.Windows.Controls.Primitives;

namespace Guardian.PAS.PASFramework.UI.WPF
{
public class PASDatePicker : DatePicker
{
#region Attached Property

    /// <summary>
    /// Get of IsFocus Property.
    /// </summary>
    /// <param name="obj"></param>
    /// <returns></returns>
    public static bool GetIsFocus(DependencyObject obj)
    {
        return (bool)obj.GetValue(IsFocusProperty);
    }

    /// <summary>
    /// Set of IsFocus Property.
    /// </summary>
    /// <param name="obj"></param>
    /// <param name="value"></param>
    public static void SetIsFocus(DependencyObject obj, bool value)
    {
        obj.SetValue(IsFocusProperty, value);
    }


    public static readonly DependencyProperty IsFocusProperty =
            DependencyProperty.RegisterAttached(
             "IsFocus", typeof(bool), typeof(PASDatePicker),
             new UIPropertyMetadata(false, OnIsFocusPropertyChanged));

    /// <summary>
    /// Property change event of IsFocused.
    /// </summary>
    /// <param name="d"></param>
    /// <param name="e"></param>
    private static void OnIsFocusPropertyChanged(DependencyObject d,
            DependencyPropertyChangedEventArgs e)
    {
        var uie = (UIElement)d;
        if ((bool)e.NewValue)
        {
            // Don't care about false values. 
            (uie as PASDatePicker).Focus();
        }
    }
    #endregion
}

}

I am using this datepicker in my code and tryin

[PumbaPumba]

Hi dashingsidds, Change it into normal dp. We normally use AttachedProperty when we have child elements. In this case no need of AttachedProperty. To-Resolve this issue: Ensure, the PropertyChanged is getting fired properly and/or PropertyChanged is not null. HTH