/CompDialog.xaml.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.Shapes;



namespace QuickArch

{

    /// <summary>

    /// Interaction logic for Window1.xaml

    /// </summary>

    public partial class ComponentDialog : Window

    {

        public ComponentDialog()

        {

            InitializeComponent();

        }

        void okButton_Click(object sender, RoutedEventArgs e)

        {

            // Don't accept the dialog box if there is invalid data

            if (!IsValid(this)) return;



            // Dialog box accepted

            this.DialogResult = true;

        }

        void cancelButton_Click(object sender, RoutedEventArgs e)

        {

            // Dialog box canceled

            this.DialogResult = false;

        }

         // Validate all dependency objects in a window

        bool IsValid(DependencyObject node)

        {

            // Check if dependency object was passed

            if (node != null)

            {

                // Check if dependency object is valid.

                // NOTE: Validation.GetHasError works for controls that have validation rules attached 

                bool isValid = !Validation.GetHasError(node);

                if (!isValid)

                {

                    // If the dependency object is invalid, and it can receive the focus,

                    // set the focus

                    if (node is IInputElement) Keyboard.Focus((IInputElement)node);

                    return false;

                }

            }



            // If this dependency object is valid, check all child dependency objects

            foreach (object subnode in LogicalTreeHelper.GetChildren(node))

            {

                if (subnode is DependencyObject)

                {   

                    // If a child dependency object is invalid, return false immediately,

                    // otherwise keep checking

                    if (IsValid((DependencyObject)subnode) == false) return false;

                }

            }



            // All dependency objects are valid

            return true;

        }

    }

}