Splitting a Multi page TIFF File Tutorial

Splitting a Multi-page TIFF File Tutorial

Take the following steps to start a project:

1. Start Visual Studio .NET.
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, and choose "Windows Application " in the Templates List.
4. Type the project name as "Splitting Multi-page TIFF file" in the Project Name field, and then click OK. If desired, type a new location for your project or select a directory using the Browse button, and then click OK .

5. In the "Solution Explorer" window, right-click on the "References" folder, and select "Add Reference…" from the context menu. In the "Add Reference" dialog box, select the ".NET" tab, browse to the "C:\LEADTOOLS 19\Bin\DotNet\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. Go to the toolbox (View->Toolbox), drag and drop a Button control on the form, and set the following properties for it:

1. Switch to Form1 code view (right-click Form1 in the solution explorer then select View Code) and add the following lines at the beginning of the file:

   C#

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

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

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

   C#

   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 
                    
        

   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(); 
      } 
   } 
                    
        

3. Add the following code to the Form1 class:

   C#

   VB
   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 
                    
        

   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; 
   } 
                    
        

4. Build, and Run the program to test it.