Example





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GdPicture14 Namespace / GdPicturePDF Class / HasJavaScript Method

HasJavaScript Method (GdPicturePDF)

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Returns if the currently loaded PDF document contains any executable JavaScript actions.
Syntax
'Declaration

 


Public Function HasJavaScript() As Boolean
public bool HasJavaScript()
public function HasJavaScript(): Boolean; 
public function HasJavaScript() : boolean;
public: bool HasJavaScript(); 
public:

bool HasJavaScript();

Return Value

true if the currently loaded PDF document contains any JavaScript actions, 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 PDF document contains JavaScript actions. 
Dim caption As String = "Example: HasJavaScript"

Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF()

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

    Dim hasJS As Boolean = gdpicturePDF.HasJavaScript()

    If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

        If hasJS Then

            MessageBox.Show("This PDF document contains JavaScript.", caption)

        Else

            MessageBox.Show("This PDF document contains NO JavaScript.", caption)

        End If

    Else

        MessageBox.Show("The HasJavaScript() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)

    End If

Else

    MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption)

End If

gdpicturePDF.Dispose()
string caption = "Example: HasJavaScript";

GdPicturePDF gdpicturePDF = new GdPicturePDF();

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

{

    bool hasJS = gdpicturePDF.HasJavaScript();

    if (gdpicturePDF.GetStat() == GdPictureStatus.OK)

    {

        if (hasJS)

            MessageBox.Show("This PDF document contains JavaScript.", caption);

        else

            MessageBox.Show("This PDF document contains NO JavaScript.", caption);

    }

    else

        MessageBox.Show("The HasJavaScript() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);

}

else

    MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption);

gdpicturePDF.Dispose();
Example
How to find out if the PDF document contains JavaScript actions. Dim caption As String = "Example: HasJavaScript" Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF() If gdpicturePDF.LoadFromFile("sample.pdf", False) = GdPictureStatus.OK Then Dim hasJS As Boolean = gdpicturePDF.HasJavaScript() If gdpicturePDF.GetStat() = GdPictureStatus.OK Then If hasJS Then MessageBox.Show("This PDF document contains JavaScript.", caption) Else MessageBox.Show("This PDF document contains NO JavaScript.", caption) End If Else MessageBox.Show("The HasJavaScript() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption) End If Else MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption) End If gdpicturePDF.Dispose() string caption = "Example: HasJavaScript"; GdPicturePDF gdpicturePDF = new GdPicturePDF(); if (gdpicturePDF.LoadFromFile("sample.pdf", false) == GdPictureStatus.OK) { bool hasJS = gdpicturePDF.HasJavaScript(); if (gdpicturePDF.GetStat() == GdPictureStatus.OK) { if (hasJS) MessageBox.Show("This PDF document contains JavaScript.", caption); else MessageBox.Show("This PDF document contains NO JavaScript.", caption); } else MessageBox.Show("The HasJavaScript() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption); } else MessageBox.Show("The file can't be loaded. Status: " + gdpicturePDF.GetStat().ToString(), caption); gdpicturePDF.Dispose();
See Also

Reference

GdPicturePDF Class
GdPicturePDF Members
GetStat Method
GetStat Method
RemoveJavaScript Method