LoadFromIStream Method (GdPicturePDF)

In This Topic

Loads the PDF document from a previously instantiated IStream object according to what you have specified. The only supported file format for the input stream object is the PDF format.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function LoadFromIStream( _
   ByVal Stream As IStream _
) As GdPictureStatus

public GdPictureStatus LoadFromIStream( 
   IStream Stream
)

public function LoadFromIStream( 
    Stream: IStream
): GdPictureStatus;

public function LoadFromIStream( 
   Stream : IStream
) : GdPictureStatus;

public: GdPictureStatus LoadFromIStream( 
   IStream* Stream
)

public:
GdPictureStatus LoadFromIStream( 
   IStream^ Stream
)

Parameters

Stream: An IStream object. This object must be initialized before it can be sent into this method and it should remain open for subsequent use.

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

The origin's location and the measurement unit for any loaded document are reset to their default values: PdfOrigin.PdfOriginBottomLeft, PdfMeasurementUnit.PdfMeasurementUnitPoint.

The document's first page is automatically set as the current page after loading.

Sometimes a PDF document can be password protected. You can use the GdPicturePDF.IsEncrypted method to determine if a PDF is encrypted or not. If it is encrypted, you should use the GdPicturePDF.SetPassword method to decrypt it with the user or owner password.

Please note that the input stream should remain open and can only be closed/disposed of by the user after a call to the GdPicturePDF.CloseDocument method is made.

Example

IStream is an interface, so you don't create an IStream object directly, you should rather implement this interface and then pass the required object. From that reason we don't add any example here.

Reference

GdPicturePDF Class
GdPicturePDF Members
IsEncrypted Method
SetPassword Method