Visual Studio / WPF > ObjectDataProvider > インデックス付き乱数のListBox表示 | IEnumerable | yield return

動作環境

Windows 7 Pro (32bit)
Microsoft Visual Studio 2017 Community
Sublime Text 2

http://gushwell.ldblog.jp/archives/52333267.html
を参考にObjectDataProvider を用いて作成クラスの関数を使う例を勉強中。

インデックスをつけてみた。

MainWindow.xaml.cs

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 _170606_t1333_ObjectDataProvider
{
    /// <summary>
    /// MainWindow.xaml の相互作用ロジック
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
    public class NumberUtil
    {
        public IEnumerable<int> GetRandomNumbers()
        {
            var rnd = new Random();
            for (int idx=0; idx<12; idx++)
            {
                yield return rnd.Next(100, 1000);
            }
        }
        public IEnumerable<int> GetIndexNumbers()
        {
            for (int idx = 0; idx < 12; idx++)
            {
                yield return idx;
            }
        }
    }
}

MainWindow.xaml

<Window x:Class="_170606_t1333_ObjectDataProvider.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:_170606_t1333_ObjectDataProvider"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <ObjectDataProvider ObjectType="{x:Type local:NumberUtil}"
                            MethodName="GetRandomNumbers" x:Key="RandomNum"/>
        <ObjectDataProvider ObjectType="{x:Type local:NumberUtil}"
                            MethodName="GetIndexNumbers" x:Key="IndexNum"/>
    </Window.Resources>
    <Grid>
        <StackPanel Orientation="Horizontal">
            <ListBox Height="300"
                 ItemsSource="{Binding Mode=OneWay, Source={StaticResource IndexNum}}"/>
            <ListBox Height="300" Margin="5"
                 ItemsSource="{Binding Mode=OneWay, Source={StaticResource RandomNum}}"/>
        </StackPanel>
    </Grid>
</Window>