Splitting a Multi-page TIFF File Tutorial

Take the following steps to start a project:

1. Start Visual Studio.

2. Choose File -> New -> Project... from the menu.

3. In the New Project dialog box, choose either Visual C# Projects or VB Projects in the Projects Type list. Then, choose Windows Forms Application in the templates list.

4. Name the project "Split Multi-page TIFF Files" If desired, provide a new location for your project. Click OK.

5. In the Solution Explorer panel, right-click on the References node and select Add Reference... from the context menu. In the Add Reference dialog box, browse to the "C:\LEADTOOLS 19\Bin\DotNet4\Win32" folder and select the following DLLs:

   • Leadtools.dll
   • Leadtools.Codecs.dll
   • Leadtools.Codecs.Fax.dll
   • Leadtools.Codecs.Tif.dll

   Click the Select button and then press the OK button to add the above DLLs to the application.

6. Drag and drop a Button from the Toolbox onto the Form1 UI designer. Change the following properties:

   Text	Name
   Split TIFF	buttonSplit

7. Switch to the code view of Form1 (right-click Form1 in the Solution Explorer and select View Code) and add the following lines at the beginning of the file:

   VB

   Imports System.IO 
   Imports Leadtools 
   Imports Leadtools.Codecs 
   Imports Leadtools.ImageProcessing 
        

   C#

   using System.IO; 
   using Leadtools; 
   using Leadtools.Codecs; 
   using Leadtools.ImageProcessing; 
        

8. Add the following initialization code to the Form1 class

   VB

   Protected Overrides Sub OnLoad(ByVal e As EventArgs) 
      ' Requires a license file that unlocks 1D barcode read functionality. 
      Dim MY_LICENSE_FILE As String = "C:\LEADTOOLS 19\Common\License\leadtools.lic" 
      Dim MY_DEVELOPER_KEY As String = System.IO.File.ReadAllText("C:\LEADTOOLS 19\Common\License\leadtools.lic.key") 
      RasterSupport.SetLicense(MY_LICENSE_FILE, MY_DEVELOPER_KEY) 
                    
      MyBase.OnLoad(e) 
   End Sub 
    
   Private Function CreateMultiPageFile(ByVal codecs As RasterCodecs) As String 
      ' Create a multi-page TIF file 
      Dim pageFileName() As String = _ 
      { _ 
         "C:\Users\Public\Documents\LEADTOOLS Images\Ocr1.tif", _ 
         "C:\Users\Public\Documents\LEADTOOLS Images\Ocr2.tif", _ 
         "C:\Users\Public\Documents\LEADTOOLS Images\Ocr3.tif", _ 
         "C:\Users\Public\Documents\LEADTOOLS Images\Ocr4.tif" _ 
      } 
      Dim image As RasterImage = Nothing 
      For i As Integer = 0 To pageFileName.Length - 1 
         ' load the page image 
         Dim page As RasterImage = codecs.Load(pageFileName(i)) 
         If (i = 0) Then 
            ' first image, just save it into our variable 
            image = page 
         Else 
            ' add this page into our image 
            image.AddPage(page) 
            ' we do not need this page anymore 
            page.Dispose() 
         End If 
      Next 
      Dim outputFileName As String = "C:\Users\Public\Documents\LEADTOOLS Images\MultiPage.tif" 
      If (File.Exists(outputFileName)) Then 
         File.Delete(outputFileName) 
      End If 
      codecs.Save(image, outputFileName, RasterImageFormat.Tif, 1, 1, 4, 1, CodecsSavePageMode.Overwrite) 
      image.Dispose() 
      Return outputFileName 
   End Function 
        

   C#

   protected override void OnLoad(EventArgs e) 
   {                
      // Requires a license file that unlocks 1D barcode read functionality. 
      string MY_LICENSE_FILE = @"C:\LEADTOOLS 19\Common\License\leadtools.lic"; 
      string MY_DEVELOPER_KEY = System.IO.File.ReadAllText(@"C:\LEADTOOLS 19\Common\License\leadtools.lic.key"); 
      RasterSupport.SetLicense(MY_LICENSE_FILE, MY_DEVELOPER_KEY); 
    
      buttonSplit.Click += buttonSplit_Click; 
                    
      base.OnLoad(e); 
   } 
    
   private string CreateMultiPageFile(RasterCodecs codecs) 
   { 
      // Create a multi-page TIF file 
      string[] pageFileName = 
      { 
         @"C:\Users\Public\Documents\LEADTOOLS Images\Ocr1.tif", 
         @"C:\Users\Public\Documents\LEADTOOLS Images\Ocr2.tif", 
         @"C:\Users\Public\Documents\LEADTOOLS Images\Ocr3.tif", 
         @"C:\Users\Public\Documents\LEADTOOLS Images\Ocr4.tif" 
      }; 
      RasterImage image = null; 
      for(int i = 0; i < pageFileName.Length; i++) 
      { 
         // load the page image 
         RasterImage page = codecs.Load(pageFileName[i]); 
         if(i == 0) 
         { 
            // first image, just save it into our variable 
            image = page; 
         } 
         else 
         { 
            // add this page into our image 
            image.AddPage(page); 
            // we do not need this page anymore 
            page.Dispose(); 
         } 
      } 
      string outputFileName = @"C:\Users\Public\Documents\LEADTOOLS Images\MultiPage.tif"; 
      if(File.Exists(outputFileName)) 
         File.Delete(outputFileName); 
      codecs.Save(image, outputFileName, RasterImageFormat.Tif, 1, 1, 4, 1, CodecsSavePageMode.Overwrite); 
      image.Dispose(); 
      return outputFileName; 
   } 
        

9. Add an event handler to the buttonSplit Click event and code it as follows:

   VB

   Private Sub buttonSplit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonSplit.Click 
      ' Intitialize a new RasterCodecs object. 
      Dim codecs As New RasterCodecs() 
      Dim multiPageFileName As String = CreateMultiPageFile(codecs) 
      ' Find out how many pages the file has 
      Dim info As CodecsImageInfo = codecs.GetInformation(multiPageFileName, True) 
      ' Loop through the pages of the file; perform specific processing on it, then save each page to a separate file: 
      Dim flip As New FlipCommand() 
      Dim outputDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
      For pageNumber As Integer = 1 To info.TotalPages 
         ' Load the next image in the loop 
         Dim image As RasterImage = codecs.Load(multiPageFileName, 0, CodecsLoadByteOrder.BgrOrGray, pageNumber, pageNumber) 
         ' Perform specific processing on the page, such as flipping it 
         flip.Run(image) 
         ' Save the page to a separate file 
         Dim pageFileName As String = Path.Combine(outputDir, "Page" + pageNumber.ToString() + ".tif") 
         codecs.Save(image, pageFileName, RasterImageFormat.Tif, 0) 
      Next 
   End Sub 
        

   C#

   private void buttonSplit_Click(object sender, System.EventArgs e) 
   { 
      // Intitialize a new RasterCodecs object. 
      RasterCodecs codecs = new RasterCodecs(); 
      string multiPageFileName = CreateMultiPageFile(codecs); 
      // Find out how many pages the file has 
      CodecsImageInfo info = codecs.GetInformation(multiPageFileName, true); 
                       
      // Loop through the pages of the file; perform specific processing on it, then save each page to a separate file: 
      FlipCommand flip = new FlipCommand(); 
      string outputDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
      for(int pageNumber = 1; pageNumber <= info.TotalPages; pageNumber++) 
      { 
         // Load the next image in the loop 
         RasterImage image = codecs.Load(multiPageFileName, 0, CodecsLoadByteOrder.BgrOrGray, pageNumber, pageNumber); 
         // Perform specific processing on the page, such as flipping it 
         flip.Run(image); 
         // Save the page to a separate file 
         string pageFileName = Path.Combine(outputDir, "Page" + pageNumber + ".tif"); 
         codecs.Save(image, pageFileName, RasterImageFormat.Tif, 0); 
         image.Dispose(); 
      } 
   } 
        

10. Build and run the program to test it.