how do you load a bitmapimage in wpf?

[xarzu]

In a silverlight app, I have a BitmapImage defined as System.Windows.Media.Imaging.BitmapImage and it as a method called "SetSource" where I can set the source like this:

    BitmapImage bitmap = new BitmapImage(); 
    System.IO.Stream stream = _scene.GetStream(); 
    if (stream == null) return; 
    bitmap.SetSource(stream); 

In a WPF application I have also have a Bitmap image defined as System.Windows.Media.Imaging.BitmapImage but there is no SetSource method. How do I set the source in a WPF app like I do in a Silverlight app?

Also, it is a stream, not a string. It is not a URI. so "UriSource" method does not work. I tried this:

     System.IO.Stream stream = _scene.GetStream(); 
        if (stream == null) return; 
        BitmapImage bitmap = new BitmapImage(); 
 
        bitmap.UriSource = new Uri(stream.ToString());

And at runtime, it threw an error tha URI cannot be determined. Is the URI an identifier for the intranet? Are you sure that this is not a silverlight thing? I am doing a WPF application

[Frinavale]

In WPF, you set the source for the image using a BitmapSource.

For example, say I have the following image control and button that loads the image file that the user selects defined in my XAML:

(XAML)

<StackPanel>
  <Image x:Name="theImage" Height="500" Width="600"/>
  <Button x:Name="LoadPhoto" Content="Load Photo" Click="LoadPhoto_Click"/>
</StackPanel>

This would be the code in the button click event that loads the image and displays it:

(VB.NET)

Private Sub LoadPhoto_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs)
        Dim dlg As New Microsoft.Win32.OpenFileDialog()
        dlg.FileName = "Image"
        dlg.DefaultExt = ".jpg"
        dlg.Filter = "All images|*.jpg;*.jpeg;*.jpe;*.bmp;*.gif;*.ico;*.png;*.tif;*.tiff;*.hpd;*.jxr;*.wdp|" + _
            "JPEG image|*.jpg;*.jpeg;*.jpe|Windows BMP image|*.bmp|GIF image|*.gif|Microsoft Windows icon|*.ico|" + _
            "PNG image|*.png|TIFF image|*.tif;*.tiff|JPEG XR|*.hpd;*.jxr;*.wdp"
        Dim photo As New BitmapImage()
        If dlg.ShowDialog() Then
            If dlg.FileNames.Count > 0 Then
                Using photoStream As System.IO.FileStream = New System.IO.FileStream(dlg.FileNames(0), IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.Read)
                    photo.BeginInit()
                    photo.StreamSource = photoStream
                    photo.CacheOption = BitmapCacheOption.OnLoad
                    photo.EndInit()
                End Using
                theImage.Source = photo
                theImage.Stretch = Stretch.Fill
            End If
        End If
    End Sub
 

(C#)

private void LoadPhoto_Click(System.Object sender, System.Windows.RoutedEventArgs e)
{
    Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
    dlg.FileName = "Image";
    dlg.DefaultExt = ".jpg";
    dlg.Filter = "All images|*.jpg;*.jpeg;*.jpe;*.bmp;*.gif;*.ico;*.png;*.tif;*.tiff;*.hpd;*.jxr;*.wdp|" + "JPEG image|*.jpg;*.jpeg;*.jpe|Windows BMP image|*.bmp|GIF image|*.gif|Microsoft Windows icon|*.ico|" + "PNG image|*.png|TIFF image|*.tif;*.tiff|JPEG XR|*.hpd;*.jxr;*.wdp";
    BitmapImage photo = new BitmapImage();
    if (dlg.ShowDialog()) {
        if (dlg.FileNames.Count > 0) {
            using (System.IO.FileStream photoStream = new System.IO.FileStream(dlg.FileNames(0), System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.Read)) {
                photo.BeginInit();
                photo.StreamSource = photoStream;
                photo.CacheOption = BitmapCacheOption.OnLoad;
                photo.EndInit();
            }
            theImage.Source = photo;
            theImage.Stretch = Stretch.Fill;
        }
    }
}

-Frinny