WPF Combobox ObjectDataProvider MethodName ObjectType ObjectDataProvider.MethodParameters-牛翰网

WPF Combobox ObjectDataProvider MethodName ObjectType ObjectDataProvider.MethodParameters

<Window.Resources>
    <ObjectDataProvider x:Key="kindEnum" MethodName="GetValues"
                        ObjectType="{x:Type sys:Enum}">
        <ObjectDataProvider.MethodParameters>
            <x:Type Type="local:BookKindEnum"/>
        </ObjectDataProvider.MethodParameters>
    </ObjectDataProvider>
    <local:BooksData x:Key="booksData"/>
</Window.Resources>


<DataGridComboBoxColumn Header="Kind" 
                        SelectedItemBinding="{Binding BookKind}"
                        ItemsSource="{Binding Source={StaticResource kindEnum}}"/>

 

 

 

 

 

 

 

 

 

 

 

//Full code
<Window x:Class="WpfApp397.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:WpfApp397"
        xmlns:sys="clr-namespace:System;assembly=mscorlib"
        mc:Ignorable="d" WindowState="Maximized"
        Title="MainWindow" Height="450" Width="800">
    <Window.Resources>
        <ObjectDataProvider x:Key="kindEnum" MethodName="GetValues"
                            ObjectType="{x:Type sys:Enum}">
            <ObjectDataProvider.MethodParameters>
                <x:Type Type="local:BookKindEnum"/>
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
        <local:BooksData x:Key="booksData"/>
    </Window.Resources>
    <Grid>
        <DataGrid ItemsSource="{StaticResource booksData}"
                  BorderBrush="Blue" BorderThickness="3"
                  VirtualizingPanel.IsContainerVirtualizable="True"
                  VirtualizingPanel.IsVirtualizing="True"
                  VirtualizingPanel.VirtualizationMode="Recycling"
                  AutoGenerateColumns="False"
                  CanUserAddRows="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Id" Binding="{Binding Id}" SortDirection="Ascending" />
                <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
                <DataGridComboBoxColumn Header="Kind" 
                                        SelectedItemBinding="{Binding BookKind}"
                                        ItemsSource="{Binding Source={StaticResource kindEnum}}"/>
                <DataGridTemplateColumn Header="Image">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Viewbox>
                                <Image Source="{Binding ImgUrl}" Width="200" Height="500"/>
                            </Viewbox>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</Window>


//cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
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;
using System.IO;

namespace WpfApp397
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }

    public class BooksData:ObservableCollection<Book>
    {
        public BooksData()
        {
            var imgsList = Directory.GetFiles(@"../../Images");
            if(imgsList!=null && imgsList.Any())
            {
                int imgsCount = imgsList.Count();
                for(int i=0;i<1000000;i++)
                {
                    var bk = new Book()
                    {
                        Id = i + 1,
                        Name = $"Name_{i + 1}",
                        ImgUrl = imgsList[i % imgsCount]                        
                    };
                    bk.BookKind = bk.GetBookKindEnum(i);
                    this.Add(bk);
                }
            }
        }
    }

    public class Book
    {
        public int Id { get; set; }

        public string Name { get; set; }

        public string ImgUrl { get; set; }

        public BookKindEnum BookKind { get; set; }

        public BookKindEnum GetBookKindEnum(int idx)
        {
            switch(idx)
            {
                case 0:
                    return BookKindEnum.Science;
                case 1:
                    return BookKindEnum.Technology;
                case 2:
                    return BookKindEnum.Engineering;
                default:
                    return BookKindEnum.Mathematics;
            }
        }
    }

    public enum BookKindEnum
    {
        Science,
        Technology,
        Engineering,
        Mathematics
    }
}

 

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