ComHelper Class

Namespace:
GemBox.Pdf
Assembly:
GemBox.Pdf.dll

Contains methods that can be useful for users which are calling GemBox.Pdf component using COM interop.

[ComVisible(true)]
public class ComHelper
<ComVisible(True)>
Inheritance:
System.Object
ComHelper

Constructors

ComHelper()

Initializes a new instance of the ComHelper class.

public ComHelper()
Public Sub New

Methods

GetFormFields(Object)

Gets all fields from the PDF document's interactive form.

public ArrayList GetFormFields(object document)
Public Function GetFormFields(document As Object) As ArrayList
Parameters
document
System.Object

The PdfDocument instance from which to retrieve the PdfField elements.

Returns
System.Collections.ArrayList

Array of interactive form fields.

Load(String)

Loads a PDF document from a file with the specified path and with the Default options.

public PdfDocument Load(string path)
Public Function Load(path As String) As PdfDocument
Parameters
path
System.String

The path to a file from which to load a PDF document.

Returns
PdfDocument

A loaded PDF document.

Exceptions
System.ArgumentNullException

path is null.

InvalidPdfPasswordException

PDF file is encrypted and the password is required to load a PDF document. Use LoadWithOptions(String, Object) method and provide a valid Password.

LoadWithOptions(String, Object)

Loads a PDF document from a file with the specified path and with the specified options.

public PdfDocument LoadWithOptions(string path, object options)
Public Function LoadWithOptions(path As String, options As Object) As PdfDocument
Parameters
path
System.String

The path to a file from which to load a PDF document.

options
System.Object

The options used for loading a PdfDocument from a PDF file.

Returns
PdfDocument

A loaded PDF document.

Exceptions
System.ArgumentNullException

path is null or options is null.

InvalidPdfPasswordException

PDF file is encrypted and the Password is invalid.

Save(Object, String)

Saves the entire PDF document to a file with the specified path.

Use SaveOptions to specify options used for saving the PdfDocument to a PDF file.

public void Save(object document, string path)
Public Sub Save(document As Object, path As String)
Parameters
document
System.Object

The PdfDocument instance which to save.

path
System.String

The path to a file to which to save a PDF document.

Exceptions
System.ArgumentNullException

path is null.

SetLicense(String)

Sets the license (serial) key.

public void SetLicense(string serialKey)
Public Sub SetLicense(serialKey As String)
Parameters
serialKey
System.String

The serial key.

Remarks

You should call this method before using any other class from GemBox.Pdf assembly.

Key can only be set once (if you try to set another key, exception will be thrown).

The best place to call this method is from static constructor of your application's main class.

Valid serial key has multiple groups of alphanumeric characters, separated with dashes.

To use the assembly in free limited mode, use FREE-LIMITED-KEY as serialKey.

For more information about GemBox.Pdf evaluation and licensing, see evaluation and licensing.