Example





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GetSubject Method (GdPicturePDF)

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Returns the subject of the currently loaded PDF document, if any is set in the document information dictionary.
Syntax
'Declaration

 


Public Function GetSubject() As String
public string GetSubject()
public function GetSubject(): String; 
public function GetSubject() : String;
public: string* GetSubject(); 
public:

String^ GetSubject();

Return Value

The value of the document's Subject property as a string. The 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 GetStat method to identify the specific reason for the method's failure, if any.

Example
How to find out the subject of the PDF document. 
Using gdpicturePDF As New GdPicturePDF()

    If gdpicturePDF.LoadFromFile("test.pdf", False) = GdPictureStatus.OK Then

        Dim subject As String = gdpicturePDF.GetSubject()

        Dim status As GdPictureStatus = gdpicturePDF.GetStat()

        If status = GdPictureStatus.OK Then

            MessageBox.Show("The subject of this PDF is: " + subject, "Example: GetSubject")

        Else

            MessageBox.Show("The GetSubject() method has failed with the status: " + status.ToString(), "Example: GetSubject")

        End If

    Else

        MessageBox.Show("The file can't be loaded.", "Example: GetSubject")

    End If

End Using
using (GdPicturePDF gdpicturePDF = new GdPicturePDF())

{

    if (gdpicturePDF.LoadFromFile("test.pdf", false) == GdPictureStatus.OK)

    {

        string subject = gdpicturePDF.GetSubject();

        GdPictureStatus status = gdpicturePDF.GetStat();

        if (status == GdPictureStatus.OK)

        {

            MessageBox.Show("The subject of this PDF is: " + subject, "Example: GetSubject");

        }

        else

        {

            MessageBox.Show("The GetSubject() method has failed with the status: " + status.ToString(), "Example: GetSubject");

        }

    }

    else

    {

        MessageBox.Show("The file can't be loaded.", "Example: GetSubject");

    }

}
Example
How to find out the subject of the PDF document. Using gdpicturePDF As New GdPicturePDF() If gdpicturePDF.LoadFromFile("test.pdf", False) = GdPictureStatus.OK Then Dim subject As String = gdpicturePDF.GetSubject() Dim status As GdPictureStatus = gdpicturePDF.GetStat() If status = GdPictureStatus.OK Then MessageBox.Show("The subject of this PDF is: " + subject, "Example: GetSubject") Else MessageBox.Show("The GetSubject() method has failed with the status: " + status.ToString(), "Example: GetSubject") End If Else MessageBox.Show("The file can't be loaded.", "Example: GetSubject") End If End Using using (GdPicturePDF gdpicturePDF = new GdPicturePDF()) { if (gdpicturePDF.LoadFromFile("test.pdf", false) == GdPictureStatus.OK) { string subject = gdpicturePDF.GetSubject(); GdPictureStatus status = gdpicturePDF.GetStat(); if (status == GdPictureStatus.OK) { MessageBox.Show("The subject of this PDF is: " + subject, "Example: GetSubject"); } else { MessageBox.Show("The GetSubject() method has failed with the status: " + status.ToString(), "Example: GetSubject"); } } else { MessageBox.Show("The file can't be loaded.", "Example: GetSubject"); } }
See Also

Reference

GdPicturePDF Class
GdPicturePDF Members
GetStat Method
GetStat Method
LoadFromFile Method
SetSubject Method
GetAuthor Method
GetTitle Method