DocumentFormFields Class (original) (raw)
Summary
Manages the form fields of the document.
Syntax
[DataContractAttribute()]
public class DocumentFormFields
public:
[SerializableAttribute,
DataContractAttribute]
ref class DocumentFormFields
class DocumentFormFields: Example
This example shows how to extract information from a PDF Form Field compatible PDF file. Checks whether the document has any form fields.
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Document.Writer;
using Leadtools.Document;
using Leadtools.Caching;
using Leadtools.Annotations.Engine;
using Leadtools.Ocr;
using Leadtools.Barcode;
using Leadtools.Document.Converter;
public void DocumentFormFieldsExample(string pdfFile)
{
// The value of LoadDocumentOptions.LoadFormFieldsMode affects loading the documents as follows:
//
// 1. Normal PDF without form fields: Will not be affected.
// 2. Normal PDF with fields:
// LoadFormFieldsMode = View, then the form fields will be rendered as part of the view without the ability to retrieve or update the value
// LoadFormFieldsMode = Interactive, then the form fields will be parsed to LEADDocument.FormFields
// Load the document with interactive form fields mode
Console.WriteLine($"Loading with DocumentLoadFormFieldsMode.Interactive");
var loadDocumentOptions = new LoadDocumentOptions();
loadDocumentOptions.LoadFormFieldsMode = DocumentLoadFormFieldsMode.Interactive;
using (LEADDocument document = DocumentFactory.LoadFromFile(pdfFile, loadDocumentOptions))
{
Console.WriteLine($"Document has {document.Pages.Count} pages");
// Find out if the document has parsed form fields
bool hasFormFields = document.FormFields.HasFormFields;
Console.WriteLine($"HasFormFields:{hasFormFields}");
// Extract all the form fields
DocumentFormFieldsContainer[] containers = document.FormFields.GetFormFields();
if (containers == null || containers.Length == 0)
{
Console.WriteLine($"Empty Containers");
return;
}
foreach (DocumentFormFieldsContainer container in containers)
{
// Show info on this container
Console.WriteLine($"Page Number {container.PageNumber}, Form fields count {container.Children?.Count}");
foreach (DocumentFormField formField in container.Children)
{
StringBuilder formFieldInfo = new StringBuilder();
formFieldInfo.Append($"ID : {(string.IsNullOrEmpty(formField.ID) ? string.Empty : formField.ID)}");
formFieldInfo.Append($"Name : {(string.IsNullOrEmpty(formField.Name) ? string.Empty : formField.Name)}");
formFieldInfo.Append($"Bounds : {formField.Bounds}");
formFieldInfo.Append($"BackgroundColor : {formField.BackgroundColor}");
formFieldInfo.Append($"Is Printable : {formField.Printable}");
formFieldInfo.Append($"Is Viewable : {formField.Viewable}");
formFieldInfo.Append($"Is Locked : {formField.Locked}");
formFieldInfo.Append($"Is Required : {formField.Required}");
formFieldInfo.Append($"Is ReadOnly : {formField.ReadOnly}");
formFieldInfo.Append($" ");
// DocumentFormFieldBorderStyle reference
formFieldInfo.Append($"Border Style : {formField.BorderStyle.Style}");
formFieldInfo.Append($"Border Color : {formField.BorderStyle.Color}");
formFieldInfo.Append($"Border Width : {formField.BorderStyle.Width}");
formFieldInfo.Append($" ");
// DocumentFormFieldTextStyle reference
formFieldInfo.Append($"Font Name : {formField.TextStyle.FontName}");
formFieldInfo.Append($"Font Size : {formField.TextStyle.FontSize}");
formFieldInfo.Append($"Text Color : {formField.TextStyle.Color}");
formFieldInfo.Append($"Text Alignment : {formField.TextStyle.TextAlignment}");
formFieldInfo.Append($" ");
formFieldInfo.Append($"Type : {formField.Type}");
if (formField is DocumentTextFormField)
{
DocumentTextFormField textFormField = formField as DocumentTextFormField;
formFieldInfo.Append($"Text Value : {(string.IsNullOrEmpty(textFormField.Value) ? string.Empty : textFormField.Value)}");
formFieldInfo.Append($"Content Type : {textFormField.ContentType}");
formFieldInfo.Append($"Max Length : {textFormField.MaxLength}");
formFieldInfo.Append($"Multiline : {textFormField.Multiline}");
formFieldInfo.Append($"Is Password : {textFormField.IsPassword}");
formFieldInfo.Append($"Is Comb : {textFormField.IsComb}");
}
else if (formField is DocumentChoiceFormField)
{
DocumentChoiceFormField choiceFormField = formField as DocumentChoiceFormField;
formFieldInfo.Append($"Options Display Value : {(choiceFormField.OptionsDisplayValue == null ? string.Empty : string.Join(",", choiceFormField.OptionsDisplayValue))}");
formFieldInfo.Append($"Options Exported Value : {(choiceFormField.OptionsExportedValue == null ? string.Empty : string.Join(",", choiceFormField.OptionsExportedValue))}");
formFieldInfo.Append($"Selected Indices : {(choiceFormField.SelectedIndices == null ? string.Empty : string.Join(",", choiceFormField.SelectedIndices))}");
formFieldInfo.Append($"MultiSelect : {choiceFormField.MultiSelect}");
formFieldInfo.Append($"Choice Type : {(choiceFormField.ChoiceType == DocumentChoiceFormField.ChoiceType_List ? "List" : "ComboBox")}");
}
else if (formField is DocumentButtonFormField)
{
DocumentButtonFormField buttonFormField = formField as DocumentButtonFormField;
formFieldInfo.Append($"Is Checked : {buttonFormField.IsChecked}");
formFieldInfo.Append($"Button Type : {(buttonFormField.ButtonType == DocumentButtonFormField.ButtonType_CheckBox ? "CheckBox" : "RadioButton")}");
}
formFieldInfo.Append($"==========================================================================");
Console.Write(formFieldInfo.ToString());
}
}
// The following sample shows how to update a Document Text Form Field Value in the first document page
// Use DocumentButtonFormField.IsChecked to update DocumentButtonFormField values
// Use DocumentChoiceFormField.SelectedIndices to update DocumentChoiceFormField selected items
const int pageNumber = 1;
foreach (var formField in containers[pageNumber].Children)
{
DocumentTextFormField textFormField = formField as DocumentTextFormField;
if (textFormField != null)
{
textFormField.Value = "PDF Forms";
break;
}
}
// Update the form fields containers
// DocumentFormFields reference
document.FormFields.SetFormFields(containers);
}
}