I know you all have had the issue of working with tiff image files in Silverlight. I wanted to share some code today that may help you all in this process. In the SilverlightApp.Web Project please add a silverlight enabled web service and add the following code.
<OperationContract()> _
Public Function ConvertTiffToJpegBinary(ByVal imageData As Byte()) As List(Of Byte())
Using ms As New System.IO.MemoryStream(imageData)
Using imagefile As System.Drawing.Image = System.Drawing.Image.FromStream(ms)
Dim PictureList As New List(Of Byte())
Dim frameDimensions As FrameDimension = New FrameDimension(imagefile.FrameDimensionsList(0))
Dim frameNum As Integer = imagefile.GetFrameCount(frameDimensions)
For frame As Integer = 0 To frameNum - 1
imagefile.SelectActiveFrame(frameDimensions, frame)
Using bmp As Bitmap = New Bitmap(imagefile.GetThumbnailImage(768, 1024, Nothing, System.IntPtr.Zero))
Using bmpStream As New System.IO.MemoryStream
bmp.Save(bmpStream, System.Drawing.Imaging.ImageFormat.Jpeg)
bmpStream.Position = 0
PictureList.Add(bmpStream.ToArray)
End Using
End Using
frame += 1
Next
Return PictureList
End Using
End Using
End Function
After adding this code to the service below is the code on how to convert that binary data to a bitmap object to be rendered within Silverlight.
This code actually calls a service to receive the tiff byte array it then sends that information to the service specified above.
Private Sub btnclick_Click(sender As Object, e As RoutedEventArgs) Handles btnclick.Click
Dim oasisSrv As New OasisSrv.oasiswsObjClient
AddHandler oasisSrv.testsalesorderCompleted, Sub(Sender1 As Object, e1 As OasisSrv.testsalesorderCompletedEventArgs)
Dim service1client As New ServiceReference1.PortalTiffConversionServiceClient
AddHandler service1client.ConvertTiffToJpegBinaryCompleted, Sub(sender11 As Object, e11 As ServiceReference1.ConvertTiffToJpegBinaryCompletedEventArgs)
For Each rec In e11.Result
Using ms As New MemoryStream(rec)
Dim bmp As New BitmapImage()
bmp.SetSource(ms)
Dim image As New Image With {.Source = bmp}
Dim scroll As New ScrollViewer
Dim panel As New StackPanel
scroll.Content = panel
panel.Children.Add(image)
LayoutRoot.Children.Add(scroll)
End Using
Next
End Sub
service1client.ConvertTiffToJpegBinaryAsync(e1.opImage)
End Sub
oasisSrv.testsalesorderAsync("")
