GetFormFieldActionID Method (GdPicturePDF)

In This Topic

Returns the action's unique identifier of the action associated with a form field, that is specified by its unique form field's identifier and it is related to the currently loaded PDF document. You can subsequently use the GetActionType method to determine the kind of this action.

At this time it is supported by the toolkit to only associate one action within one form field.

Syntax

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

'Declaration
 
Public Function GetFormFieldActionID( _
   ByVal FieldId As Integer _
) As Integer

public int GetFormFieldActionID( 
   int FieldId
)

public function GetFormFieldActionID( 
    FieldId: Integer
): Integer;

public function GetFormFieldActionID( 
   FieldId : int
) : int;

public: int GetFormFieldActionID( 
   int FieldId
)

public:
int GetFormFieldActionID( 
   int FieldId
)

Parameters

FieldId: A unique form field identifier specifying a required form field object. You can obtain this identifier using methods like GetFormFieldId, GetFormFieldChildID or methods intended to add form fields.

Return Value

A unique action identifier of the action associated with a specified form field. The GetStat method can be subsequently used to determine if this method has been successful.

You can use the GetActionType method to obtain the type of this action, as it is shown in the example below.

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.

Be aware that at this time it is not supported by the toolkit to add multiple actions per one form field.

Example

How to find out the types of actions associated with form fields in the currently loaded PDF document.

VB.NET
C#

Dim caption As String = "Example: GetFormFieldActionID"
Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF()
If gdpicturePDF.LoadFromFile("forms.pdf", False) = GdPictureStatus.OK Then
    Dim count As Integer = gdpicturePDF.GetFormFieldsCount()
    If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
        Dim message As String = ""
        Dim formID As Integer = 0, actionID As Integer = -1
        Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown
        Dim actionType As PdfActionType = PdfActionType.ActionTypeUnknown
        For i As Integer = 0 To count - 1
            formID = gdpicturePDF.GetFormFieldId(i)
            If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                message = message + (i + 1).ToString() + ".field's type: "
                type = gdpicturePDF.GetFormFieldType(formID)
                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                    message = message + type + "  action: "
                    actionID = gdpicturePDF.GetFormFieldActionID(formID)
                    If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                        actionType = gdpicturePDF.GetActionType(actionID)
                        If gdpicturePDF.GetStat() = GdPictureStatus.OK Then
                            message = message + actionType.ToString()
                        Else
                            message = message + gdpicturePDF.GetStat().ToString()
                        End If
                    Else
                        message = message + gdpicturePDF.GetStat().ToString()
                    End If
                Else
                    message = message + gdpicturePDF.GetStat().ToString()
                End If
                message = message + vbCrLf
            Else
                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString()
                Exit For
            End If
        Next
        If count = 0 Then message = "This file doesn't include forms."
        MessageBox.Show(message, caption)
    Else
        MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption)
    End If
Else
    MessageBox.Show("The file can't be loaded.", caption)
End If
gdpicturePDF.Dispose()

string caption = "Example: GetFormFieldActionID";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
if (gdpicturePDF.LoadFromFile("forms.pdf", false) == GdPictureStatus.OK)
{
    int count = gdpicturePDF.GetFormFieldsCount();
    if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
    {
        string message = "";
        int formID = 0, actionID = -1;
        PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown;
        PdfActionType actionType = PdfActionType.ActionTypeUnknown;
        for (int i = 0; i < count; i++)
        {
            formID = gdpicturePDF.GetFormFieldId(i);
            if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
            {
                message = message + (i + 1).ToString() + ".field's type: ";
                type = gdpicturePDF.GetFormFieldType(formID);
                if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
                {
                    message = message + type + "  action: ";
                    actionID = gdpicturePDF.GetFormFieldActionID(formID);
                    if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
                    {
                        actionType = gdpicturePDF.GetActionType(actionID);
                        if (gdpicturePDF.GetStat() == GdPictureStatus.OK)
                            message = message + actionType.ToString();
                        else
                            message = message + gdpicturePDF.GetStat().ToString();
                    }
                    else
                        message = message + gdpicturePDF.GetStat().ToString();
                }
                else
                    message = message + gdpicturePDF.GetStat().ToString();
                message = message + "\n";
            }
            else
            {
                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString();
                break;
            }
        }
        if (count == 0) message = "This file doesn't include forms.";
        MessageBox.Show(message, caption);
    }
    else
        MessageBox.Show("The GetFormFieldsCount() method has failed with the status: " + gdpicturePDF.GetStat().ToString(), caption);
}
else
    MessageBox.Show("The file can't be loaded.", caption);
gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
GetActionType Method
SetFormFieldAction Method
GetFormFieldsCount Method
GetFormFieldId Method
GetFormFieldChildID Method
GetFormFieldType Method
NewActionURI Method