A single rectangular region on a form that defines an image area on a blank (not filled-in) form to be used when an image reading process is performed on the filled form during form processing.

Object Model

Syntax

Visual Basic (Declaration)
<SerializableAttribute()> Public Class ImageFormField Inherits FormField

Visual Basic (Usage)	Copy Code
`Dim instance As ImageFormField`

C#
[SerializableAttribute()] public class ImageFormField : FormField

C++/CLI
[SerializableAttribute()] public ref class ImageFormField : public FormField

Example

Visual Basic Copy Code

Visual Basic	Copy Code
'''This example shows how to create an ImageFormField. Public Sub AddImageFormField(ByVal processingEngine As FormProcessingEngine) 'Create a new page for the form. Dim formPage As FormPage = New FormPage(1, 150, 150) Dim imageField As ImageFormField = New ImageFormField() imageField.Name = "Signature" imageField.Bounds = New LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel) formPage.Add(imageField) 'Add the page to the engine processingEngine.Pages.Add(formPage) End Sub

'''This example shows how to create an ImageFormField.

Public Sub AddImageFormField(ByVal processingEngine As FormProcessingEngine)

   'Create a new page for the form.

   Dim formPage As FormPage = New FormPage(1, 150, 150)

   Dim imageField As ImageFormField = New ImageFormField()

   imageField.Name = "Signature"

   imageField.Bounds = New LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel)

   formPage.Add(imageField)

   'Add the page to the engine

   processingEngine.Pages.Add(formPage)

End Sub

C# Copy Code

C#	Copy Code
///This example shows how to create an ImageFormField. public void AddImageFormField(FormProcessingEngine processingEngine) { //Create a new page for the form. FormPage formPage = new FormPage(1, 150, 150); ImageFormField imageField = new ImageFormField(); imageField.Name = "Signature"; imageField.Bounds = new LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel); formPage.Add(imageField); //Add the page to the engine processingEngine.Pages.Add(formPage); }

///This example shows how to create an ImageFormField. 
public void AddImageFormField(FormProcessingEngine processingEngine) 
{ 
   //Create a new page for the form.  
   FormPage formPage = new FormPage(1, 150, 150); 
   ImageFormField imageField = new ImageFormField(); 
   imageField.Name = "Signature"; 
   imageField.Bounds = new LogicalRectangle(196, 327, 1402, 40, LogicalUnit.Pixel); 
   formPage.Add(imageField); 
   //Add the page to the engine  
   processingEngine.Pages.Add(formPage); 
}

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(String) and FormProcessingEngine.SaveFields(String) methods, allowing you to define MasterForm fields just once and save them to disk. LEADTOOLS supports TextFormField, OmrFormField, BarcodeFormField, ImageFormField, 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).

Inheritance Hierarchy

System.Object
Leadtools.Forms.Processing.FormField
Leadtools.Forms.Processing.ImageFormField

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

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ImageFormField Class
See Also Members Example