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Working with Zones
Take the following steps to add code to the existing project that demonstrates how to work with pages in an OCR document:
  1. Start with the program you created in Working with Pages.
  2. Drag and drop three buttons in Form1. Leave all the buttons names as the default "button7, button8, button9 ", then change the following properties of button7:
    PropertyValue
    TextFind Zones
  3. Change the following properties of button8:
    PropertyValue
    TextZones Count
  4. Change the following properties of button9:
    PropertyValue
    TextVerify Zone
  5. Switch to Form1 code view (Right-click Form1 in the solution explorer then select View Code ) and add the following code to the button7 control’s click procedure:

    [Visual Basic] 

    
Private Sub button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button7.Click
   Try
      ' Find all the zones of the first page of RasterDocument object
      rasterDocument.EnableZoneForceSingleColumn = True
      rasterDocument.ShowZoneGridlines = True
      rasterDocument.FindZones(0, Rectangle.Empty)
      MessageBox.Show("Automatic zones method finds all available zones into the specified pages successfully")
   Catch ex As Exception
      ' Error
      MessageBox.Show("Error: " + ex.Message + " in finding available zone in the specified page")
   End Try
End Sub
    [C#] 
    
private void button7_Click(object sender, System.EventArgs e)
{
   try
   {
      // Find all the zones of the first page of RasterDocument object
      rasterDocument.EnableZoneForceSingleColumn = true;
      rasterDocument.ShowZoneGridlines = true;
      rasterDocument.FindZones(0, Rectangle.Empty);
      MessageBox.Show("Automatic zones method finds all available zones into the specified pages successfully");
   }
   catch(Exception ex)
   {
      //Error
      MessageBox.Show("Error: " + ex.Message + " in finding available zone in the specified page");
   }
}
  6. Add the following code to the button8 control’s click procedure:

    [Visual Basic] 

     
Private Sub button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button8.Click
   ' Print the number of zones in the first page
   MessageBox.Show("Total zones count = " & rasterDocument.GetZoneCount(0))
End Sub
    [C#] 
    
private void button8_Click(object sender, System.EventArgs e)
{
   // Print the number of zones in the first page
   MessageBox.Show("Total zones count = " + rasterDocument.GetZoneCount(0));
}
  7. Add the following code to the button9 control’s click procedure:

    [Visual Basic] 

    
Private Sub button9_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button9.Click
   Dim zonesCount As Integer
   Dim i As Integer
   
   zonesCount = rasterDocument.GetZoneCount(0)
   For i = 0 To zonesCount - 1
      ' Get The zones information of the first page of RasterDocument object
      rasterDocumentZoneData = rasterDocument.GetZone(0, i)
      rasterDocumentZoneData.Flags = (rasterDocumentZoneData.Flags And (Not RasterDocumentZoneFlags.DoNotUseVerificationEvent))
      
      Try
         ' Update the zones information of the first page of RasterDocument object
         rasterDocument.UpdateZone(0, i, rasterDocumentZoneData)
      Catch ex As Exception
         MessageBox.Show("Error: " + ex.Message + " in updating zone # " + i.ToString())
      End Try
   Next i
End Sub
    [C#] 
     
private void button9_Click(object sender, System.EventArgs e)
{
   int zonesCount;
   int i;
   
   zonesCount = rasterDocument.GetZoneCount(0);
   for (i = 0; i < zonesCount; i++)
   {
      // Get The zones information of the first page of RasterDocument object
      rasterDocumentZoneData = rasterDocument.GetZone(0, i);
      rasterDocumentZoneData.Flags = (rasterDocumentZoneData.Flags & (~RasterDocumentZoneFlags.DoNotUseVerificationEvent));
      
      try
      {
         // Update the zones information of the first page of RasterDocument object
         rasterDocument.UpdateZone(0, i, rasterDocumentZoneData);
      }
      catch(Exception ex)
      {
         MessageBox.Show("Error: " + ex.Message + " in updating zone # " + i.ToString());
      }
   }
}
  8. Build, and Run the program to test it.
  9. Save this project to use for testing other code samples.