SetAuthor Method (GdPicturePDF)

In This Topic

Sets up a new author of the currently loaded PDF document into the document information dictionary and in the document catalog's metadata as well.

If the loaded PDF document contains metadata stored in the Metadata entry in the document catalog, the newly specified Author property is synchronized with those metadata. That means, you will be able to see the changed value of this property using the Acrobat's Document Properties dialogue box.

Syntax

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

'Declaration
 
Public Sub SetAuthor( _
   ByVal Author As String _
)

public void SetAuthor( 
   string Author
)

public procedure SetAuthor( 
    Author: String
);

public function SetAuthor( 
   Author : String
);

public: void SetAuthor( 
   string* Author
)

public:
void SetAuthor( 
   String^ Author
)

Parameters

Author: A new value of the Author property as a string.

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.

Just to remind you that the newly specified Author property is synchronized with existing metadata, if any are included in the loaded PDF document.

Example

How to set up who is the author of the PDF document.

VB.NET
C#

Using gdpicturePDF As New GdPicturePDF()
    If gdpicturePDF.LoadFromFile("test.pdf", True) = GdPictureStatus.OK Then
        Dim author As String = gdpicturePDF.GetAuthor()
        Dim status As GdPictureStatus = gdpicturePDF.GetStat()
        If status = GdPictureStatus.OK Then
            MessageBox.Show("The author of this PDF is: " + author, "Example: SetAuthor")
            gdpicturePDF.SetAuthor(author + " Victor Hugo")
            status = gdpicturePDF.GetStat()
            If status = GdPictureStatus.OK Then
                If gdpicturePDF.SaveToFile("test.pdf") = GdPictureStatus.OK Then
                    author = gdpicturePDF.GetAuthor()
                    If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                        MessageBox.Show("The author of this PDF was set properly." + vbCrLf + "The new author is: " + author, "Example: SetAuthor")
                    End If
                Else
                    MessageBox.Show("The file can't be saved.", "Example: SetAuthor")
                End If
            Else
                MessageBox.Show("The SetAuthor() method has failed with the status: " + status.ToString(), "Example: SetAuthor")
            End If
        Else
            MessageBox.Show("The GetAuthor() method has failed with the status: " + status.ToString(), "Example: SetAuthor")
        End If
    Else
        MessageBox.Show("The file can't be loaded.", "Example: SetAuthor")
    End If
End Using

using (GdPicturePDF gdpicturePDF = new GdPicturePDF())
{
    if (gdpicturePDF.LoadFromFile("test.pdf", true) == GdPictureStatus.OK)
    {
        string author = gdpicturePDF.GetAuthor();
        GdPictureStatus status = gdpicturePDF.GetStat();
        if (status == GdPictureStatus.OK)
        {
            MessageBox.Show("The author of this PDF is: " + author, "Example: SetAuthor");
            gdpicturePDF.SetAuthor(author + " Victor Hugo");
            status = gdpicturePDF.GetStat();
            if (status == GdPictureStatus.OK)
            {
                if (gdpicturePDF.SaveToFile("test.pdf") == GdPictureStatus.OK)
                {
                    author = gdpicturePDF.GetAuthor();
                    if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
                    {
                        MessageBox.Show("The author of this PDF was set properly.\nThe new author is: " + author, "Example: SetAuthor");
                    }
                }
                else
                {
                    MessageBox.Show("The file can't be saved.", "Example: SetAuthor");
                }
            }
            else
            {
                MessageBox.Show("The SetAuthor() method has failed with the status: " + status.ToString(), "Example: SetAuthor");
            }
        }
        else
        {
            MessageBox.Show("The GetAuthor() method has failed with the status: " + status.ToString(), "Example: SetAuthor");
        }
    }
    else
    {
        MessageBox.Show("The file can't be loaded.", "Example: SetAuthor");
    }
}

Reference

GdPicturePDF Class
GdPicturePDF Members
LoadFromFile Method
GetAuthor Method
SaveToFile(String) Method
Dispose Method