A System.IO.Stream object. This object must be properly initialized before it can be sent into this method and it must be disposed of by the user as well.
Example





In This Topic

InitFromStream(Stream) Method

In This Topic
Initializes the current AnnotationManager object from an instantiated Stream object according to what you have specified. The document previously handled by this AnnotationManager object will automatically close.

All document formats currently supported by the toolkit are listed here.

Be aware that the AnnotationManager object only handles GdPicture/XMP annotations contained in the source document.

Syntax
'Declaration

 

Public Overloads Function InitFromStream( _

   ByVal Stream As Stream _

) As GdPictureStatus
public GdPictureStatus InitFromStream( 

   Stream Stream

)
public function InitFromStream( 

    Stream: Stream

): GdPictureStatus; 
public function InitFromStream( 

   Stream : Stream

) : GdPictureStatus;
public: GdPictureStatus InitFromStream( 

   Stream* Stream

) 
public:

GdPictureStatus InitFromStream( 

   Stream^ Stream

) 

Parameters

Stream
A System.IO.Stream object. This object must be properly initialized before it can be sent into this method and it must be disposed of by the user as well.

Return Value

A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK. We strongly recommend always checking this status first.
Remarks

This method requires the Annotations component to run.

Example
How to initialize the AnnotationManager object from a JPG file using a stream.
Dim annotationManager As AnnotationManager = New AnnotationManager()

Dim file As System.IO.Stream = New System.IO.FileStream("image.jpg", System.IO.FileMode.Open)

If (annotationManager.InitFromStream(file) = GdPictureStatus.OK) AndAlso

   (annotationManager.PageCount > 0) AndAlso (annotationManager.SelectPage(1) = GdPictureStatus.OK) Then

    Dim stamp As GdPicture14.Annotations.AnnotationRubberStamp = annotationManager.AddRubberStampAnnot(Color.Red, 0.5F, 0.5F, 2, 1, "APPROVED")

    If stamp IsNot Nothing Then

        stamp.Rotation = 20

        If (annotationManager.SaveAnnotationsToPage() = GdPictureStatus.OK) AndAlso

           (annotationManager.BurnAnnotationsToPage(True) = GdPictureStatus.OK) AndAlso

           (annotationManager.SaveDocumentToPDF("approved.pdf") = GdPictureStatus.OK) Then

            MessageBox.Show("Finished successfully!", "AnnotationManager.InitFromStream")

        Else

            MessageBox.Show("The file can't be saved. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")

        End If

        stamp.Dispose()

    Else

        MessageBox.Show("The rubber stamp annotation can't be created. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")

    End If

    annotationManager.Close()

Else

    MessageBox.Show("The AnnotationManager can't be properly initialized. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream")

End If

annotationManager.Dispose()

file.Dispose()
AnnotationManager annotationManager = new AnnotationManager();

System.IO.Stream file = new System.IO.FileStream("image.jpg", System.IO.FileMode.Open);

if ((annotationManager.InitFromStream(file) == GdPictureStatus.OK) &&

    (annotationManager.PageCount > 0) && (annotationManager.SelectPage(1) == GdPictureStatus.OK))

{

    GdPicture14.Annotations.AnnotationRubberStamp stamp = annotationManager.AddRubberStampAnnot(Color.Red, 0.5f, 0.5f, 2, 1, "APPROVED");

    if (stamp != null)

    {

        stamp.Rotation = 20;

        if ((annotationManager.SaveAnnotationsToPage() == GdPictureStatus.OK) &&

            (annotationManager.BurnAnnotationsToPage(true) == GdPictureStatus.OK) &&

            (annotationManager.SaveDocumentToPDF("approved.pdf") == GdPictureStatus.OK))

            MessageBox.Show("Finished successfully!", "AnnotationManager.InitFromStream");

        else

            MessageBox.Show("The file can't be saved. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");

        stamp.Dispose();

    }

    else

        MessageBox.Show("The rubber stamp annotation can't be created. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");

    annotationManager.Close();

}

else

    MessageBox.Show("The AnnotationManager can't be properly initialized. Status: " + annotationManager.GetStat().ToString(), "AnnotationManager.InitFromStream");

annotationManager.Dispose();

file.Dispose();
See Also