Splitting a Multi-page TIFF File Tutorial

Take the following steps to start a project:

Start Visual Studio .NET.
Choose File->New->Project… from the menu.
In the New Project dialog box, Choose either "Visual C# Projects" or "Visual Basic Projects" in the Projects Type List, and choose "Windows Application " in the Templates List.
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 .
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 18\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.

Go to the toolbox (View->Toolbox), drag and drop a Button control on the form, and set the following properties for it:

Text	Name
Split TIFF	buttonSplit

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: [Visual Basic]


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

[C#]


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

Add an event handler to the buttonSplit Click event and code it as follows: [Visual Basic]


            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();
               }
            }

Add the following code to the Form1 class: [Visual Basic]


            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#]


            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;
            }

Build, and Run the program to test it.