WPF TabStop / TabIndex in ItemsControl

Question

I\'m dynamically adding WPF ComboBox-es and I want to be able to select the added ComboBoxes with the \'TAB\' key. (Dynamically generate Ta

Answer 1

Here is a small example. I did this in Silverlight, so I guess you will have to modify it to work in WPF. It is not complete, but it is a starting point. You might want to use the Tag property on your controls to identify which of them need tab index fixing.

XAML:

And C#:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;

namespace SilverlightApplication6
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();

            this.DataContext = new List() { 1, 2, 3, 4, 5 };


        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var controls = new List();
            GetChildrenOfSpecificType(this, ref controls, false);

            var index = 1;
            controls.ForEach(control =>
                {
                    if (control is ComboBox || control is TextBox)
                    {
                        control.TabIndex = index;
                        index++;
                    }
                });
        }

        private static void GetChildrenOfSpecificType(DependencyObject parent, ref List resultList, bool getSingle) where T : class
        {
            if (parent == null)
                return;
            else
            {
                int cnt = VisualTreeHelper.GetChildrenCount(parent);

                if (cnt > 0)
                {
                    for (int i = 0; i < cnt; i++)
                    {
                        var d = VisualTreeHelper.GetChild(parent, i);
                        if (d is T)
                        {
                            resultList.Add(d as T);
                            if (getSingle)
                                return;
                        }

                        GetChildrenOfSpecificType(d, ref resultList, getSingle);
                    }
                }

            }
        }
    }
}