Convert a SQL Image to WPF ImageBrush [duplicate] - wpf

Question

I'm trying to bind a Byte array from my databse to a WPF Image.
My XAML:
<Window.Resources>
<local:BinaryImageConverter x:Key="imgConverter" />
</Window.Resources>
...
<Image Source="{Binding Path=ImageData, Converter={StaticResource imgConverter}}" />
I've modified code published by Ryan Cromwell for a value converter:
Class BinaryImageConverter
Implements IValueConverter
Private Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.Convert
If value IsNot Nothing AndAlso TypeOf value Is Byte() Then
Dim bytes As Byte() = TryCast(value, Byte())
Dim stream As New MemoryStream(bytes)
Dim image As New BitmapImage()
image.BeginInit()
image.StreamSource = stream
image.EndInit()
Return image
End If
Return Nothing
End Function
Private Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
Throw New Exception("The method or operation is not implemented.")
End Function
End Class
The image.EndInit() line of the BinaryImageConverter's Convert() function throws this NotSupportedException:
"No imaging component suitable to
complete this operation was found."
InnerException: "Exception from
HRESULT: 0x88982F50"
I don't understand what I'm doing wrong. How can I get this working?
Update
It seems the problem was the bytes coming out of the database. There must have been a problem with the way I was putting them in.
See my working code below.

Answer 1

You can bind a byte[] to an Image.
Here a Sample:
Xaml:
<Image Source="{Binding UserImage}"/>
Code:
private byte[] userImage;
public byte[] UserImage
{
get { return userImage; }
set
{
if (value != userImage)
{
userImage = value;
OnPropertyChanged("UserImage");
}
}
}

Answer 2

Thanks for all your help. I've now got it working. I'm still not sure exactly what the problem was.
This is how I put images into my database…
Private Sub ButtonUpload_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
Dim FileOpenStream As Stream = Nothing
Dim FileBox As New Microsoft.Win32.OpenFileDialog()
FileBox.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures)
FileBox.Filter = "Pictures (*.jpg;*.jpeg;*.gif;*.png)|*.jpg;*.jpeg;*.gif;*.png|" & _
"All Files (*.*)|*.*"
FileBox.FilterIndex = 1
FileBox.Multiselect = False
Dim FileSelected As Nullable(Of Boolean) = FileBox.ShowDialog(Me)
If FileSelected IsNot Nothing AndAlso FileSelected.Value = True Then
Try
FileOpenStream = FileBox.OpenFile()
If (FileOpenStream IsNot Nothing) Then
Dim ByteArray As Byte()
Using br As New BinaryReader(FileOpenStream)
ByteArray = br.ReadBytes(FileOpenStream.Length)
End Using
Dim g As New ZackGraphic
g.Id = Guid.NewGuid
g.ImageData = ByteArray
g.FileSize = CInt(ByteArray.Length)
g.FileName = FileBox.FileName.Split("\").Last
g.FileExtension = "." + FileBox.FileName.Split(".").Last.ToLower
g.DateAdded = Now
Dim bmp As New BitmapImage
bmp.BeginInit()
bmp.StreamSource = New MemoryStream(ByteArray)
bmp.EndInit()
bmp.Freeze()
g.PixelWidth = bmp.PixelWidth
g.PixelHeight = bmp.PixelHeight
db.AddToZackGraphic(g)
db.SaveChanges()
End If
Catch Ex As Exception
MessageBox.Show("Cannot read file from disk. " & Ex.Message, "Add a New Image", MessageBoxButton.OK, MessageBoxImage.Error, MessageBoxResult.OK)
Finally
If (FileOpenStream IsNot Nothing) Then
FileOpenStream.Close()
End If
End Try
End If
End Sub
This is my value converter used to bind a Byte array to an Image…
Class BinaryImageConverter
Implements IValueConverter
Private Function Convert(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.Convert
If value IsNot Nothing AndAlso TypeOf value Is Byte() Then
Dim ByteArray As Byte() = TryCast(value, Byte())
Dim bmp As New BitmapImage()
bmp.BeginInit()
bmp.StreamSource = New MemoryStream(ByteArray)
bmp.EndInit()
Return bmp
End If
Return Nothing
End Function
Private Function ConvertBack(ByVal value As Object, ByVal targetType As Type, ByVal parameter As Object, ByVal culture As System.Globalization.CultureInfo) As Object Implements IValueConverter.ConvertBack
Throw New Exception("The method or operation is not implemented.")
End Function
End Class
This is my XAML that uses the converter display the image…
<Window xmlns:local="clr-namespace:MyProjectName" ... >
<Window.Resources>
<local:BinaryImageConverter x:Key="imgConverter" />
</Window.Resources>
...
<Image Source="{Binding Path=ImageData, Converter={StaticResource imgConverter}}" />

Answer 3

Try using this
Dim imageSource as ImageSource
Dim bitmapDecoder = new PngBitmapDecoder(stream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.OnLoad);
imageSource = bitmapDecoder.Frames[0];
imageSource.Freeze();
Return imageSource

Answer 4

I believe this is actually a security permission issue. Try running with administrator privileges, and see if that works, and go from there.
EDIT: I disagree with the downvote and comment. Take a look at this link:
http://social.expression.microsoft.com/Forums/en-US/wpf/thread/617f6711-0373-44cc-b72c-aeae20f0f7a8/
This user had the exact same error, and it was caused by security settings. Therefore, I stand by my answer (which may not be the cause, but it is certainly worth a try)

Answer 5

My guess would be that the bytes are not a legitimate image format. I believe that error code corresponds to WINCODEC_ERR_COMPONENTNOTFOUND, which would be consistent with invalid bytes.
What format is the byte array supposed to be in? Can you save it to disk, and try to open it with another imaging program?