Public Delegate Function FormProgressCallback( _
   ByVal currentPage As Integer, _
   ByVal totalPages As Integer, _
   ByVal percentage As Integer _
) As Boolean

Visual Basic (Usage)	Copy Code
Dim instance As New FormProgressCallback(AddressOf HandlerMethod)

public delegate bool FormProgressCallback( 
   int currentPage,
   int totalPages,
   int percentage
)

public delegate bool FormProgressCallback( 
   int currentPage,
   int totalPages,
   int percentage
)

Parameters

currentPage

The 1-based index of the current page.

totalPages

The total number of pages.

percentage

A value between 0 and 100 that represents the percent completion of the process.

This example compares a Master Form attribute with a Form attributes.

Visual Basic

Copy Code

' Text writer to save the log to Private _log As StreamWriter Public Function ProgressCallbackExample(ByVal recognitionEngine As FormRecognitionEngine, ByVal master As FormRecognitionAttributes, ByVal form As FormRecognitionAttributes) As FormRecognitionResult    Return recognitionEngine.CompareForm(master, form, AddressOf MyFormProgressCallback, AddressOf MyPageProgressCallback) End Function Private Sub MyPageProgressCallback(ByVal data As PageProgressCallbackData)    If data.Percentage = 0 Then       _log.WriteLine("--------------------------")    End If    _log.WriteLine("Page progress:{0}%", data.Percentage.ToString("000")) End Sub Private Function MyFormProgressCallback(ByVal currentPage As Integer, ByVal totalPages As Integer, ByVal percentage As Integer) As Boolean    If percentage = 0 Then       _log.WriteLine("--------------------------")    End If    _log.WriteLine("Page:{0}/{1} {2}%", currentPage.ToString("00"), totalPages.ToString("00"), percentage.ToString("000"))    Return False End Function

C#

Copy Code

// Text writer to save the log to   private StreamWriter _log;   public FormRecognitionResult ProgressCallbackExample(FormRecognitionEngine recognitionEngine, FormRecognitionAttributes master, FormRecognitionAttributes form)  {     return recognitionEngine.CompareForm(master, form, MyFormProgressCallback, MyPageProgressCallback);  }  private void MyPageProgressCallback(PageProgressCallbackData data)  {     if(data.Percentage == 0)        _log.WriteLine("--------------------------");       _log.WriteLine("Page progress:{0}%",        data.Percentage.ToString("000"));  }    private bool MyFormProgressCallback(int currentPage, int totalPages, int percentage)  {     if(percentage == 0)        _log.WriteLine("--------------------------");       _log.WriteLine("Page:{0}/{1} {2}%",        currentPage.ToString("00"),        totalPages.ToString("00"),        percentage.ToString("000"));        return false;  }

Target Platforms: Microsoft .NET Framework 3.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference