PageIsBlank Method (GdPicturePDF)

In This Topic

Returns if the currently selected page of the loaded PDF is blank.

Syntax

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

'Declaration
 
Public Function PageIsBlank() As Boolean

public bool PageIsBlank()

public function PageIsBlank(): Boolean;

public function PageIsBlank() : boolean;

public: bool PageIsBlank();

public:
bool PageIsBlank();

Return Value

true if the currently selected page is blank, otherwise false. The GdPicturePDF.GetStat method can be subsequently used to determine if this method has been successful.

Remarks

This method is only allowed for use with non-encrypted documents.

It is recommend to use the GdPicturePDF.GetStat method to identify the specific reason for the method's failure, if any.

Example

How to find out if the current page is blank.

VB.NET
C#

Using gdpicturePDF = New GdPicturePDF
    gdpicturePDF.LoadFromFile("myFile.pdf")
    gdpicturePDF.SelectPage(2)
    Dim isBlank = gdpicturePDF.PageIsBlank()
End Using

using(GdPicturePDF gdpicturePDF = new GdPicturePDF)
{
    gdpicturePDF.LoadFromFile("myFile.pdf");
    gdpicturePDF.SelectPage(2);
    bool isBlank = gdpicturePDF.PageIsBlank();
}

Reference

GdPicturePDF Class
GdPicturePDF Members
PageHasText Method
PageHasShape Method
GetPageCount Method
SelectPage Method