Следующий код соответствует и выполняется, но байтовый массив (p_photo) никогда не показывается ни в таблице данных, ни в шаблоне сведений. Когда я включаю его в отладку, точка останова в конвертере не срабатывает, поэтому я подозреваю, что проблема заключается в этом. Я не могу определить это, поэтому любая помощь будет оценена.
Это мой XAML
<Window x:Class="SharedUIForms.Person"
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:SharedUIForms"
mc:Ignorable="d"
Title="PersonMaster" Height="450" Width="800"
WindowStartupLocation="CenterScreen" WindowState="Maximized">
<Window.Resources>
<local:ByteArrayToImageSourceConverter x:Key="ByteArrayToImageSourceConverter" />
</Window.Resources>
<Grid ShowGridLines ="True" Background ="LightSteelBlue">
<Grid.Resources>
<DataTemplate x:Key="DataTemplate">
<Image Name ="PersonImage" Height="100" Source="{Binding p_photo, Converter={StaticResource ByteArrayToImageSourceConverter}}" />
</DataTemplate>
</Grid.Resources>
<!-- Define the rows/columns -->
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="9*"/>
<RowDefinition Height="1*"/>
</Grid.RowDefinitions>
<!-- Now add the elements to the grid's cells -->
<!-- Data grid for the datastore details -->
<DataGrid ItemsSource="{Binding Persons}" AlternatingRowBackground="Gainsboro" AlternationCount="2" Grid.Row ="0" AutoGenerateColumns="false">
<DataGrid.Columns>
<DataGridTextColumn Header="ID" Binding="{Binding p_PersonID}" />
<DataGridTextColumn Header="Forename" Binding="{Binding p_Forename}" />
<DataGridTextColumn Header="Surname" Binding="{Binding p_Surname}" />
<DataGridTextColumn Header="Address 1" Binding="{Binding p_Address1 }" />
<DataGridTextColumn Header="Address 2" Binding="{Binding p_Address2 }" />
<DataGridTextColumn Header="Address 3" Binding="{Binding p_Address3 }" />
<DataGridTextColumn Header="Address 4" Binding="{Binding p_Address4 }" />
<DataGridTextColumn Header="Email" Binding="{Binding p_Email_Addr}" />
<DataGridTextColumn Header="Mobile Tel" Binding="{Binding p_Mobile_Tel}" />
<DataGridTextColumn Header="Registered" Binding="{Binding p_Registered}" />
<DataGridTextColumn Header="Date Entered" Binding="{Binding p_DateEntered}" />
<!--<DataGridTemplateColumn Header="Picture" CellTemplate="{StaticResource DataTemplate}"/>-->
</DataGrid.Columns>
<DataGrid.RowDetailsTemplate>
<DataTemplate>
<Grid ShowGridLines ="True" Background ="LightSteelBlue">
<!-- Define the rows/columns -->
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<StackPanel Grid.Column="0">
<Image Name ="PersonImage" Height="100" Source="{Binding p_photo, Converter={StaticResource ByteArrayToImageSourceConverter}}" />
<Button x:Name="btnImage" Width ="80" Content="Add Image" Click="btnImage_Click"/>
</StackPanel>
<StackPanel Grid.Column="1" Background="LightSteelBlue">
<TextBlock Text="ID: " FontWeight="Bold" />
<TextBlock Text="{Binding p_PersonID}" />
<TextBlock Text="Surname: " FontWeight="Bold" />
<TextBlock Text="{Binding p_Surname}" Grid.Column="1" />
<TextBlock Text="Forename: " FontWeight="Bold" />
<TextBlock Text="{Binding p_Forename}" Grid.Column="1" />
<TextBlock Text="Email: " FontWeight="Bold" />
<TextBlock Text="{Binding p_Email_Addr}" Grid.Column="1" />
<TextBlock Text="Moblile Telepone: " FontWeight="Bold" />
<TextBlock Text="{Binding p_Mobile_Tel}" Grid.Column="1" />
<TextBlock Text=" " FontWeight="Bold" />
</StackPanel>
<StackPanel Grid.Column="2"></StackPanel>
<StackPanel Grid.Column="3"></StackPanel>
</Grid>
</DataTemplate>
</DataGrid.RowDetailsTemplate>
</DataGrid>
<!-- Button grid for the controls -->
<Grid ShowGridLines ="True" Background ="LightCyan" Grid.Row ="1">
<!-- Define the rows/columns -->
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
</Grid.RowDefinitions>
<Button x:Name="btnCommit" Height ="30" Width="100" Grid.Column ="0"
Grid.Row ="0" Content="Commit" Click="btnCommit_Click"/>
<Button x:Name="btnRollback" Height ="30" Width="100" Grid.Column ="1"
Grid.Row ="0" Content="Rollback" Click="btnRollback_Click"/>
<Button x:Name="btnExit" Height ="30" Width="100" Grid.Column ="2"
Grid.Row ="0" Content="Exit" Click="btnExit_Click"/>
</Grid>
</Grid>
</Window>
Это код позади:
using log4net;
using Microsoft.Win32;
using SharedModels.Models.Pages;
using SharedUIForms.Models.ViewModels;
using System;
using System.Configuration;
using System.Globalization;
using System.IO;
using System.Windows;
using System.Windows.Data;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using VTInfrastructure.Other;
namespace SharedUIForms
{
public class ByteArrayToImageSourceConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
byte[] imageData = (byte[])value;
BitmapImage biImg = new BitmapImage();
MemoryStream ms = new MemoryStream(imageData);
biImg.BeginInit();
biImg.StreamSource = ms;
biImg.EndInit();
ImageSource imgSrc = biImg as ImageSource;
return imgSrc;
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
Stream stream = (Stream)value;
Byte[] buffer = null;
if (stream != null && stream.Length > 0)
{
using (BinaryReader br = new BinaryReader(stream))
{
buffer = br.ReadBytes((Int32)stream.Length);
}
}
return buffer;
}
}
/// <summary>
/// Interaction logic for Person.xaml
/// </summary>
public partial class Person : Window
{
public Person(string accessToken, ILog logger)
{
InitializeComponent();
this.options = new QueryOptions();
AppSettingsReader ar = new AppSettingsReader();
this.ldh = new LocalDataHandler(logger, ar);
DataContext = new PersonViewModel(accessToken, this.ldh, this.options, logger);
}
private void btnCommit_Click(object sender, RoutedEventArgs e)
{
}
private void btnRollback_Click(object sender, RoutedEventArgs e)
{
}
private void btnImage_Click(object sender, RoutedEventArgs e)
{
BitmapImage bitmapImage;
byte[] imageAsByteArray;
var of = new OpenFileDialog();
of.Filter = "Image files (*.bmp;*.png;*.jpg;*.jpeg)|*.bmp;*.png;*.jpg;*.jpeg|All files (*.*)|*.*";
var res = of.ShowDialog();
if (res.HasValue)
{
using (FileStream stream = new FileStream(of.FileName, FileMode.Open, FileAccess.Read))
{
using (var reader = new BinaryReader(stream))
{
imageAsByteArray = reader.ReadBytes((int)stream.Length);
}
using (MemoryStream byteStream = new MemoryStream(imageAsByteArray))
{
BitmapImage image = new BitmapImage();
image.BeginInit();
image.StreamSource = byteStream;
// image.CacheOption = BitmapCacheOption.OnLoad;
image.EndInit();
// image.Freeze();
e.Source = image;
}
}
}
}
private void btnExit_Click(object sender, RoutedEventArgs e)
{
// Close this window.
this.Close();
}
#region PRIVATE VARIABLES
private LocalDataHandler ldh;
QueryOptions options;
#endregion
}
}
И Viewmodel:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using VTInfrastructure.Other;
using log4net;
using SharedModels.Models;
using SharedModels.Models.Pages;
using System.Threading.Tasks;
using System.Windows.Data;
using Newtonsoft.Json;
namespace SharedUIForms.Models.ViewModels
{
public class PersonViewModel
{
private LocalDataHandler ldh;
private ILog logger;
private string accessToken;
private QueryOptions options;
public ICollectionView Persons { get; private set; }
private IList<CPersonMasterBase> personDataset;
public PersonViewModel(string AccessToken, LocalDataHandler Ldh, QueryOptions Options, ILog Logger)
{
this.ldh = Ldh;
this.logger = Logger;
this.accessToken = AccessToken;
this.options = Options;
GetPersonDataSet();
this.Persons = CollectionViewSource.GetDefaultView(this.personDataset);
}
private async Task GetPersonDataSet()
{
this.personDataset = new List<CPersonMasterBase>();
var task = this.ldh.GetAllPersons(accessToken, this.options);
task.Wait(); // Blocks current thread until GetAllPersons task completes
// For pedagogical use only: in general, don't do this!
this.personDataset = task.Result;
// this.personDataset = await this.ldh.GetAllPersons(accessToken, this.options);
}
}
}
Это p_photo:
[Column("Photo")]
public Byte[] p_Photo
{
get
{
return m_Photo;
}
set
{
m_Photo = value;
m_FlagSettings = m_FlagSettings | m_FlagBits.PHOTO;
}
protected Byte[] m_Photo;