if(System.IO.File.Exists(imgPath))
{
System.Diagnostics.Process.Start(imgPath);
}
![]()
//xaml
<Window x:Class="WpfApp261.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:behavior="http://schemas.microsoft.com/xaml/behaviors"
xmlns:local="clr-namespace:WpfApp261"
mc:Ignorable="d" WindowState="Maximized"
Title="MainWindow" Height="450" Width="800">
<Grid>
<DataGrid x:Name="dg" ItemsSource="{Binding BooksCollection,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"
VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.CacheLength="100"
CanUserAddRows="False" AutoGenerateColumns="False"
VirtualizingPanel.CacheLengthUnit="Item"
VirtualizingPanel.ScrollUnit="Item"
VirtualizingPanel.VirtualizationMode="Recycling">
<behavior:Interaction.Triggers>
<behavior:EventTrigger EventName="MouseDoubleClick">
<behavior:CallMethodAction MethodName="dg_MouseDoubleClick" TargetObject="{Binding}"/>
</behavior:EventTrigger>
</behavior:Interaction.Triggers>
<DataGrid.Columns>
<DataGridCheckBoxColumn Header="Select" Binding="{Binding IsSelected}"/>
<DataGridTextColumn Header="Id" Binding="{Binding Id}"/>
<DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
<DataGridTemplateColumn Header="Image">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<Image Source="{Binding ImgUrl}" Width="200" Height="500" RenderOptions.BitmapScalingMode="LowQuality"/>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
//cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Globalization;
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 WpfApp261
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var vm = new MainVM();
this.DataContext = vm;
}
}
public class MainVM : INotifyPropertyChanged
{
public MainVM()
{
InitData();
}
private void InitData()
{
BooksCollection = new ObservableCollection<Book>();
var imgsList = System.IO.Directory.GetFiles(@"../../Images");
int imgsCount = imgsList.Count();
for(int i=0;i<1000000;i++)
{
BooksCollection.Add(new Book()
{
Id = i,
Name = $"Name_{i + 1}",
ImgUrl = imgsList[i % imgsCount]
});
}
}
private ObservableCollection<Book> booksCollection;
public ObservableCollection<Book> BooksCollection
{
get
{
return booksCollection;
}
set
{
booksCollection = value;
OnPropertyChanged(nameof(BooksCollection));
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propName)
{
var handler = PropertyChanged;
if(handler!=null)
{
handler?.Invoke(this, new PropertyChangedEventArgs(propName));
}
}
public void dg_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
var dg = sender as DataGrid;
if(dg!=null)
{
var bk = dg?.SelectedItem as Book;
if(bk!=null)
{
string imgPath = bk.ImgUrl;
if(System.IO.File.Exists(imgPath))
{
System.Diagnostics.Process.Start(imgPath);
}
}
}
}
}
public class Book
{
public bool IsSelected { get; set; }
public int Id { get; set; }
public string Name { get; set;}
public string ImgUrl { get; set; }
}
}