TableFormField Class

A single rectangular region on a form that auto extended to defines a table/invoice area on a blank (not filled-in) form so a text reading process can be performed on the filled form during form processing on the recognized fields.

Object Model

Syntax

[SerializableAttribute()]
public class TableFormField : FormField

[SerializableAttribute()]
public ref class TableFormField : public FormField

'Declaration
 
<SerializableAttribute()>
Public Class TableFormField 
   Inherits FormField

'Usage
 
Dim instance As TableFormField

Remarks

Fields are defined for each page in the processing engine. All fields require you fill in the Property specifying where the field is located, and a Name Property.

Fields can be added or retrieved through the FormProcessingEngine.Pages property. Once fields are defined, they can be loaded/saved from disk using the FormProcessingEngine.LoadFields and FormProcessingEngine.SaveFields methods, allowing you to define MasterForm fields just once and save them to disk. LEADTOOLS supports TableFormField, OmrFormField, BarcodeFormField, ImageFormField, TableFormField, and custom user-defined fields derived from FormField. When obtaining processing results, you should check for the type of each field, and cast it to the appropriate type in order to obtain the field specific results (barcode, image, etc).

Example

Visual Basic
C#

Imports Leadtools
Imports Leadtools.Barcode
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Forms.Ocr
Imports Leadtools.Forms.Processing
Imports Leadtools.Forms.Recognition
Imports Leadtools.Forms.Recognition.Barcode
Imports Leadtools.Forms.Recognition.Ocr

''' This example shows how to create a TableFormField.
Public Sub AddTableFormField(ByVal processingEngine As FormProcessingEngine)
   ''' Create a new page for the form. 
   Dim formPage As FormPage = New FormPage(1, 150, 150)
   Dim tableField as TableFormField = New TableFormField()
   ''' add two columns to new table field
   Dim column1 As TextFormField = New TextFormField()
   column1.Name = "Column1"
   column1.Bounds = New LogicalRectangle(0, 0, 100, 50, LogicalUnit.Pixel)
   tableField.Columns.Add(New TableColumn(column1))

   Dim column2 As TextFormField = New TextFormField()
   column2.Name = "Column2"
   column2.Bounds = New LogicalRectangle(150, 0, 100, 50, LogicalUnit.Pixel)
   tableField.Columns.Add(New TableColumn(column2))

   formPage.Add(tableField)
   ''' Add the page to the engine 
   processingEngine.Pages.Add(formPage)
End Sub

using Leadtools;
using Leadtools.Barcode;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Forms.Ocr;
using Leadtools.Forms.Processing;
using Leadtools.Forms.Recognition;
using Leadtools.Forms.Recognition.Barcode;
using Leadtools.Forms.Recognition.Ocr;

///This example shows how to create a TableFormField.
public void AddTableFormField(FormProcessingEngine processingEngine)
{
   //Create a new page for the form. 
   FormPage formPage = new FormPage(1, 150, 150);
   TableFormField tableField = new TableFormField();
   //add two columns to new table field
   TextFormField column1 = new TextFormField();
   column1.Name = "Column1";
   column1.Bounds = new LogicalRectangle(0, 0, 100, 50, LogicalUnit.Pixel);
   tableField.Columns.Add(new TableColumn(column1));

   TextFormField column2 = new TextFormField();
   column2.Name = "Column2";
   column2.Bounds = new LogicalRectangle(150, 0, 100, 50, LogicalUnit.Pixel);
   tableField.Columns.Add(new TableColumn(column2));

   formPage.Add(tableField);
   //Add the page to the engine 
   processingEngine.Pages.Add(formPage);
}

Requirements

Target Platforms

Reference

TableFormField Members
Leadtools.Forms.Processing Namespace