Bob，您好！
我做了个小实验，xaml中直接调用png图片，结果是能正常显示，代码如下：
<Window x:Class="WpfApplication1.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:WpfApplication1"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:MemberToImageConverter x:Key="myMemberConverter">
</local:MemberToImageConverter>
</Window.Resources>
<Grid>
<Image x:Name="image" Height="18" Width="18" HorizontalAlignment="Left" Margin="105,90,0,0" VerticalAlignment="Top" Source="pack://application:,,,/WpfApplication1;component/Images/Debug.18x18.png" Stretch="Fill"/>
</Grid>
</Window>
但如果通过MemberToImageConverter 类，采用BitmapImage或PngBitmapDecoder类则还是不能正常显示，我猜测框架可能存在bug。我的实验代码如下：
<Window x:Class="WpfApplication1.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:WpfApplication1"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<local:MemberToImageConverter x:Key="myMemberConverter">
</local:MemberToImageConverter>
</Window.Resources>
<Grid>
<Image x:Name="image" Height="18" Width="18" HorizontalAlignment="Left" Margin="105,90,0,0" VerticalAlignment="Top" Source="{Binding Converter={StaticResource myMemberConverter}, Mode=OneWay}" Stretch="Fill"/>
</Grid>
</Window>
using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Media.Imaging;
namespace WpfApplication1
{
public class MemberToImageConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Image image = new Image();
image.Margin = new Thickness(5);
string path = @"D:\Debug.18x18.png";
try
{
//BitmapFrame bf = BitmapFrame.Create(new Uri("pack://application:,,,/Sundial.WPF.Controls.Vi;component/Logger/Images/Debug.18x18.png", UriKind.RelativeOrAbsolute));
//Uri myUri = new Uri("pack://application:,,,/WpfApplication1;component/Images/Debug.18x18.png", UriKind.RelativeOrAbsolute);
//var decoder = new PngBitmapDecoder(new Uri(@"D:\Debug.18x18.png", UriKind.RelativeOrAbsolute), BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
//var bitmapFrame = decoder.Frames[0];
using (BinaryReader loader = new BinaryReader(File.Open(path, FileMode.Open)))
{
FileInfo fd = new FileInfo(path);
int Length = (int)fd.Length;
byte[] buf = new byte[Length];
buf = loader.ReadBytes((int)fd.Length);
loader.Dispose();
loader.Close();
//开始加载图像
BitmapImage bim = new BitmapImage();
bim.BeginInit();
bim.StreamSource = new MemoryStream(buf);
bim.EndInit();
image.Source = bim;
GC.Collect(); //强制回收资源
}
//if ((Logger.Levels)Enum.Parse(typeof(Logger.Levels), value.ToString()) == Logger.Levels.WARN)
// bi = new BitmapImage(new Uri("Vi /Logger/Images/Warn.18x18.png", UriKind.RelativeOrAbsolute));
//if ((Logger.Levels)Enum.Parse(typeof(Logger.Levels), value.ToString()) == Logger.Levels.INFO)
//bi = new BitmapImage(new Uri("pack://application:,,,/Sundial.WPF.Controls.Vi;component/Logger/Images/Info.18x18.png", UriKind.RelativeOrAbsolute));
//if ((Logger.Levels)Enum.Parse(typeof(Logger.Levels), value.ToString()) == Logger.Levels.FATAL)
// bi = new BitmapImage(new Uri("pack://application:,,,/Sundial.WPF.Controls.Vi;component/Logger/Images/Fatal.18x18.png", UriKind.RelativeOrAbsolute));
//if ((Logger.Levels)Enum.Parse(typeof(Logger.Levels), value.ToString()) == Logger.Levels.ERROR)
// bi = new BitmapImage(new Uri("pack://application:,,,/Sundial.WPF.Controls.Vi;component/Logger/Images/Error.18x18.png", UriKind.RelativeOrAbsolute));
// image.Source = bi;
}
catch(Exception e)
{
MessageBoxResult result = MessageBox.Show(
"The Error: " + e.ToString(),
"Error",
MessageBoxButton.OK,
MessageBoxImage.Error,
MessageBoxResult.None,
MessageBoxOptions.DefaultDesktopOnly);
}
return image;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotSupportedException();
}
}
}
