Please use the GdPicturePDF.GetFormFieldId method to retrieve the unique form field identifier in order to correctly identify the specific form field object.
'DeclarationPublic Function GetFormFieldsCount() As Integer
public int GetFormFieldsCount()
public function GetFormFieldsCount(): Integer; public function GetFormFieldsCount() : int;public: int GetFormFieldsCount();
public: int GetFormFieldsCount();
It is recommend to use the GdPicturePDF.GetStat method to identify the specific reason for the method's failure, if any.
Dim caption As String = "Example: GetFormFieldsCount" Dim gdpicturePDF As GdPicturePDF = New GdPicturePDF() If gdpicturePDF.LoadFromFile("test.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: GetFormFieldsCount"; GdPicturePDF gdpicturePDF = new GdPicturePDF(); if (gdpicturePDF.LoadFromFile("test.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();