Quantcast
Channel: Windows Presentation Foundation (WPF) forum
Viewing all articles
Browse latest Browse all 18858
↧

Trying to put a list of expanders inside a combobox

January 22, 2013, 5:11 am
$
0
0

Hello,

I am trying to display a list of expanders in a combo box. The basic functionality is there and working as expected. The combo box items source is bound to a dictionary<string, list<data>>. 

However, there are a few issues that are problematic. If you run the example code, Item B contains 10 subitems, Item C contains 20 subitems and Item G contains 30 subitems.

  • For items with a large number of subitems, when the expander is opened, the expander list box displays a vertical scrollbar but no thumb
  • If you click in an expander list box vertical scrollbar area, the combo box closes
  • When scrolling the combo box vertical scrollbar, I would like it to honor expander subitems when scrolling - currently it just scrolls to the next outer item (eg Item J, Item K, etc)
  • If a subitem is clicked within an expanded expander, I would like the combo box to display that when the popup is closed (eg Item A - SubItem 4)

Any help or suggestions would be greatly appreciated.

Here is the xaml 

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"><Grid><StackPanel Margin="5"><ComboBox Name="comboBox1" Margin="5"><ComboBox.ItemTemplate><DataTemplate><Expander Header="{Binding Key}"><ScrollViewer Name="PART_ScrollViewer" VerticalScrollBarVisibility="Visible"><ListBox HorizontalAlignment="Stretch" ItemsSource="{Binding Value}"><ListBox.ItemTemplate><DataTemplate><TextBlock Text="{Binding Name}" ToolTip="{Binding Description}" /></DataTemplate></ListBox.ItemTemplate></ListBox></ScrollViewer></Expander></DataTemplate></ComboBox.ItemTemplate></ComboBox></StackPanel></Grid></Window>
And here is the code behind. There is nothing of interest here. All it does it build the dictionary.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            comboBox1.ItemsSource = getItems();
        }

        private Dictionary<string, List<Data>> getItems()
        {
            Dictionary<string, List<Data>> items = new Dictionary<string, List<Data>>();
            items.Add("Item A", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item B", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
                new Data { Name = "SubItem 6", Description = "Item 6 Description" },

                new Data { Name = "SubItem 7", Description = "Item 7 Description" },
                new Data { Name = "SubItem 8", Description = "Item 8 Description" },
                new Data { Name = "SubItem 9", Description = "Item 9 Description" },
                new Data { Name = "SubItem 10", Description = "Item 10 Description" },
            });

            items.Add("Item C", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
                new Data { Name = "SubItem 6", Description = "Item 6 Description" },
                new Data { Name = "SubItem 7", Description = "Item 7 Description" },
                new Data { Name = "SubItem 8", Description = "Item 8 Description" },
                new Data { Name = "SubItem 9", Description = "Item 9 Description" },
                new Data { Name = "SubItem 10", Description = "Item 10 Description" },
                new Data { Name = "SubItem 11", Description = "Item 11 Description" },
                new Data { Name = "SubItem 12", Description = "Item 12 Description" },
                new Data { Name = "SubItem 13", Description = "Item 13 Description" },
                new Data { Name = "SubItem 14", Description = "Item 14 Description" },
                new Data { Name = "SubItem 15", Description = "Item 15 Description" },
                new Data { Name = "SubItem 16", Description = "Item 16 Description" },
                new Data { Name = "SubItem 17", Description = "Item 17 Description" },
                new Data { Name = "SubItem 18", Description = "Item 18 Description" },
                new Data { Name = "SubItem 19", Description = "Item 19 Description" },
                new Data { Name = "SubItem 20", Description = "Item 20 Description" },
            });

            items.Add("Item D", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item E", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
                new Data { Name = "SubItem 6", Description = "Item 6 Description" },
                new Data { Name = "SubItem 7", Description = "Item 7 Description" },
                new Data { Name = "SubItem 8", Description = "Item 8 Description" },
                new Data { Name = "SubItem 9", Description = "Item 9 Description" },
                new Data { Name = "SubItem 10", Description = "Item 10 Description" },
            });

            items.Add("Item F", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
                new Data { Name = "SubItem 6", Description = "Item 6 Description" },
                new Data { Name = "SubItem 7", Description = "Item 7 Description" },
                new Data { Name = "SubItem 8", Description = "Item 8 Description" },
                new Data { Name = "SubItem 9", Description = "Item 9 Description" },
                new Data { Name = "SubItem 10", Description = "Item 10 Description" },
                new Data { Name = "SubItem 11", Description = "Item 11 Description" },
                new Data { Name = "SubItem 12", Description = "Item 12 Description" },
                new Data { Name = "SubItem 13", Description = "Item 13 Description" },
                new Data { Name = "SubItem 14", Description = "Item 14 Description" },
                new Data { Name = "SubItem 15", Description = "Item 15 Description" },
                new Data { Name = "SubItem 16", Description = "Item 16 Description" },
                new Data { Name = "SubItem 17", Description = "Item 17 Description" },
                new Data { Name = "SubItem 18", Description = "Item 18 Description" },
                new Data { Name = "SubItem 19", Description = "Item 19 Description" },
                new Data { Name = "SubItem 20", Description = "Item 20 Description" },
            });

            items.Add("Item G", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
                new Data { Name = "SubItem 6", Description = "Item 6 Description" },
                new Data { Name = "SubItem 7", Description = "Item 7 Description" },
                new Data { Name = "SubItem 8", Description = "Item 8 Description" },
                new Data { Name = "SubItem 9", Description = "Item 9 Description" },
                new Data { Name = "SubItem 10", Description = "Item 10 Description" },
                new Data { Name = "SubItem 11", Description = "Item 11 Description" },
                new Data { Name = "SubItem 12", Description = "Item 12 Description" },
                new Data { Name = "SubItem 13", Description = "Item 13 Description" },
                new Data { Name = "SubItem 14", Description = "Item 14 Description" },
                new Data { Name = "SubItem 15", Description = "Item 15 Description" },
                new Data { Name = "SubItem 16", Description = "Item 16 Description" },
                new Data { Name = "SubItem 17", Description = "Item 17 Description" },
                new Data { Name = "SubItem 18", Description = "Item 18 Description" },
                new Data { Name = "SubItem 19", Description = "Item 19 Description" },
                new Data { Name = "SubItem 20", Description = "Item 20 Description" },
                new Data { Name = "SubItem 21", Description = "Item 21 Description" },
                new Data { Name = "SubItem 22", Description = "Item 22 Description" },
                new Data { Name = "SubItem 23", Description = "Item 23 Description" },
                new Data { Name = "SubItem 24", Description = "Item 24 Description" },
                new Data { Name = "SubItem 25", Description = "Item 25 Description" },
                new Data { Name = "SubItem 26", Description = "Item 26 Description" },
                new Data { Name = "SubItem 27", Description = "Item 27 Description" },
                new Data { Name = "SubItem 28", Description = "Item 28 Description" },
                new Data { Name = "SubItem 29", Description = "Item 29 Description" },
                new Data { Name = "SubItem 30", Description = "Item 30 Description" },
            });

            items.Add("Item H", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item I", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item J", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item K", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item L", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item M", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item N", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item O", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item P", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item Q", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item R", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item S", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item T", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item U", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item V", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item W", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item X", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item Y", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            items.Add("Item Z", new List<Data> 
            {
                new Data { Name = "SubItem 1", Description = "Item 1 Description" },
                new Data { Name = "SubItem 2", Description = "Item 2 Description" },
                new Data { Name = "SubItem 3", Description = "Item 3 Description" },
                new Data { Name = "SubItem 4", Description = "Item 4 Description" },
                new Data { Name = "SubItem 5", Description = "Item 5 Description" },
            });

            return items;
        }
    }

    public class Data
    {
        public string Name { get; set; }
        public string Description { get; set; }
    }
}


↧
Search
Viewing all articles
Browse latest Browse all 18858

Trending Articles

Practice Sheet of Right form of verbs for HSC Students

September 22, 2019, 11:40 pm

Download: FK ft Shenky – Nakuyewa ”Prod by: Shenky”

February 16, 2017, 4:24 pm

How to win at Markstrat (Markstrat Tips and Tricks) – Vodites

January 5, 2014, 10:34 pm

Ominde Commission Report and Recommendations – Ominde Report of 1964

March 16, 2015, 5:14 am

Bureau of Internal Revenue: Regional Offices (Directory)

January 9, 2014, 11:06 pm

GO 53 on Enhancement of Ex-gratia upto 5 Lakhs Toddy Tappers in Telangana

March 26, 2017, 11:23 pm

Cakewalk CA-2A Leveling Amplifier v2.0.1.97 WiN, v2.0.1.96 OSX Incl Keygen

October 17, 2016, 7:20 am

Mp3 Download: Mdu - Kunjenjenjena

December 7, 2017, 8:16 am

How the kill the job , when DTP request running for long hours.

July 26, 2013, 2:41 am

Microsoft Intune から展開しているアプリのアップデートについて

October 17, 2016, 4:11 am

18-year-old girl was beaten for half an hour by two Northampton men in 'an...

September 1, 2017, 10:00 pm

Car crash in Dunton Bassett leaves driver in critical condition

October 7, 2014, 7:51 am

Macky 2, Two Others In Road Accident

March 29, 2015, 5:34 am

Application log 00000000000000089514: Could not convert queue DLVST90CLNT

May 14, 2015, 11:27 pm

Detroit mafia: D’Anna Brothers agree to plea deal

April 21, 2016, 6:56 am

Delivery block field greyed out using VA02

January 26, 2016, 2:52 pm

Muloraki Au

June 22, 2016, 1:44 am

【個人撮影】スマホのプライベート映像♪「中に出さないで///」カラオケ屋での生ハメ撮りが流出ｗ【リベンジポルノ】＠PornHub

October 12, 2017, 2:23 pm

BREAKING NEWS: Diamond Platnumz Is Reported Dead After Ghastly Car Accident

February 9, 2018, 4:56 am

FIAT 500 B0111 B0112

July 5, 2018, 10:31 am
Search
<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>