WPFMessageBoxControl.cs

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;
using System.Windows.Automation.Peers;

namespace MessageBoxUtils
{
    /// <summary>
    /// Follow steps 1a or 1b and then 2 to use this custom control in a XAML file.
    ///
    /// Step 1a) Using this custom control in a XAML file that exists in the current project.
    /// Add this XmlNamespace attribute to the root element of the markup file where it is 
    /// to be used:
    ///
    ///     xmlns:MyNamespace="clr-namespace:WPFMessageBox"
    ///
    ///
    /// Step 1b) Using this custom control in a XAML file that exists in a different project.
    /// Add this XmlNamespace attribute to the root element of the markup file where it is 
    /// to be used:
    ///
    ///     xmlns:MyNamespace="clr-namespace:WPFMessageBox;assembly=WPFMessageBox"
    ///
    /// You will also need to add a project reference from the project where the XAML file lives
    /// to this project and Rebuild to avoid compilation errors:
    ///
    ///     Right click on the target project in the Solution Explorer and
    ///     "Add Reference"->"Projects"->[Select this project]
    ///
    ///
    /// Step 2)
    /// Go ahead and use your control in the XAML file.
    ///
    ///     <MyNamespace:CustomControl1/>
    ///
    /// </summary>
    [TemplatePart(Name = "PART_YesButton", Type = typeof(Button))]
    [TemplatePart(Name = "PART_NoButton", Type = typeof(Button))]
    [TemplatePart(Name = "PART_OkButton", Type = typeof(Button))]
    [TemplatePart(Name = "PART_CancelButton", Type = typeof(Button))]
    public class WPFMessageBoxControl : Control
    {
        static WPFMessageBoxControl()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(WPFMessageBoxControl), new FrameworkPropertyMetadata(typeof(WPFMessageBoxControl)));
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();

            YesButton = base.GetTemplateChild("PART_YesButton") as Button;
            NoButton = base.GetTemplateChild("PART_NoButton") as Button;
            OkButton = base.GetTemplateChild("PART_OkButton") as Button;
            CancelButton = base.GetTemplateChild("PART_CancelButton") as Button;    
        }

        internal Button YesButton { get; set; }
        internal Button NoButton { get; set; }
        internal Button OkButton { get; set; }
        internal Button CancelButton { get; set; }

        protected override System.Windows.Automation.Peers.AutomationPeer OnCreateAutomationPeer()
        {
            return new WPFMessageBoxControlAutomationPeer(this);
        }
    }
}