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





In This Topic
GdPicture14 Namespace / GdPicturePDF Class / GetFormFieldPage Method

GetFormFieldPage Method (GdPicturePDF)

In This Topic
Returns the number of that page, where the required form field is located. The form field is specified by its unique form field's identifier and it is related to the currently loaded PDF document. The page is strictly given when adding the form field, it is the currently selected page. Already added form fields can't be moved between pages.
Syntax
'Declaration

 

Public Function GetFormFieldPage( _

   ByVal FieldId As Integer _

) As Integer
public int GetFormFieldPage( 

   int FieldId

)
public function GetFormFieldPage( 

    FieldId: Integer

): Integer; 
public function GetFormFieldPage( 

   FieldId : int

) : int;
public: int GetFormFieldPage( 

   int FieldId

) 
public:

int GetFormFieldPage( 

   int FieldId

) 

Parameters

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

Return Value

The page number, where the specified form field is located. 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.

Just to inform you, that already added form fields can't be moved between pages.

Example
How to determine the pages, where all form fields in the current document are located.
Dim caption As String = "Example: GetFormFieldPage"

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 = "This document contains " + count.ToString() + " form fields." + vbCrLf

        Dim formID As Integer = 0, pagenr As Integer = 0

        Dim name As String = ""

        Dim type As PdfFormFieldType = PdfFormFieldType.PdfFormFieldTypeUnknown

        For i As Integer = 0 To count - 1

            'Getting the form field unique identifier.

            formID = gdpicturePDF.GetFormFieldId(i)

            If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                message = message + (i + 1).ToString() + ". "

                'Getting the form fields' title (name).

                name = gdpicturePDF.GetFormFieldTitle(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + name

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                'Getting the form field's type.

                message = message + "  type: "

                type = gdpicturePDF.GetFormFieldType(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + type.ToString()

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                'Getting the form field's page.

                message = message + "  page nr."

                pagenr = gdpicturePDF.GetFormFieldPage(formID)

                If gdpicturePDF.GetStat() = GdPictureStatus.OK Then

                    message = message + pagenr.ToString()

                Else

                    message = message + gdpicturePDF.GetStat().ToString()

                End If

                message += vbCrLf

            Else

                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString()

                Exit For

            End If

        Next

        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: GetFormFieldPage";

GdPicturePDF gdpicturePDF = new GdPicturePDF();

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

{

    int count = gdpicturePDF.GetFormFieldsCount();

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

    {

        string message = "This document contains " + count.ToString() + " form fields.\n";

        int formID = 0, pagenr = 0;

        string name = "";

        PdfFormFieldType type = PdfFormFieldType.PdfFormFieldTypeUnknown;

        for (int i = 0; i < count; i++)

        {

            //Getting the form field unique identifier.

            formID = gdpicturePDF.GetFormFieldId(i);

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

            {

                message = message + (i + 1).ToString() + ". ";

                //Getting the form fields' title (name).

                name = gdpicturePDF.GetFormFieldTitle(formID);

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

                    message = message + name;

                else

                    message = message + gdpicturePDF.GetStat().ToString();

                //Getting the form field's type.

                message = message + "  type: ";

                type = gdpicturePDF.GetFormFieldType(formID);

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

                    message = message + type.ToString();

                else

                    message = message + gdpicturePDF.GetStat().ToString();

                //Getting the form field's page.

                message = message + "  page nr.";

                pagenr = gdpicturePDF.GetFormFieldPage(formID);

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

                    message = message + pagenr.ToString();

                else

                    message = message + gdpicturePDF.GetStat().ToString();

                message += "\n";

            }

            else

            {

                message = message + "The GetFormFieldId() method has failed with the status: " + gdpicturePDF.GetStat().ToString();

                break;

            }

        }

        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();
See Also