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GotoPage Method

Summary

Go to the specified page.

Syntax
C#
VB
C++
public virtual void GotoPage( 
   int pageNumber 
) 
Public Overridable Sub GotoPage( 
   ByVal pageNumber As Integer 
) 
public:  
   virtual void GotoPage( 
      int pageNumber 
   )

Parameters

pageNumber

1-based number of the page to go to.

Remarks

This method moves the view to the page specified by performing the following:

  1. Finds the ImageViewerItem that corresponds to the page number in the ImageViewer. This is the item at index pageNumber - 1

  2. Sets this as the ActiveItem

  3. Calls View.ImageViewer.GotoItem

  4. If thumbnails are used: Ensures that the thumbnail for the page is visible by calling Thumbnails.ImageViewer.EnsureItemVisible

  5. If annotations are used: Sets the corresponding AnnContainer as the ActiveContainer

Example

Start with the example created in DocumentViewer, remove all the code in the Example function and add the code below.

When the user clicks the Example button, we will go to the next page till we reach the last one.

C#
VB
using Leadtools; 
using Leadtools.Controls; 
using Leadtools.Document; 
using Leadtools.Document.Viewer; 
using Leadtools.Codecs; 
using Leadtools.Caching; 
using Leadtools.Annotations.Engine; 
using Leadtools.Ocr; 
 
if (_documentViewer.CurrentPageNumber < _documentViewer.PageCount) 
   _documentViewer.GotoPage(_documentViewer.CurrentPageNumber + 1); 
else 
   MessageBox.Show("You reached the last page"); 
Imports Leadtools 
Imports Leadtools.Controls 
Imports Leadtools.Document 
Imports Leadtools.Document.Viewer 
Imports Leadtools.Codecs 
Imports Leadtools.Caching 
Imports Leadtools.Annotations.Engine 
Imports Leadtools.Ocr 
 
If _documentViewer.CurrentPageNumber < _documentViewer.PageCount Then 
   _documentViewer.GotoPage(_documentViewer.CurrentPageNumber + 1) 
Else 
   MessageBox.Show("You reached the last page") 
End If

Requirements

Target Platforms

Help Version 20.0.2020.4.3
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Leadtools.Document.Viewer.WinForms Assembly
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Leadtools.Document.Viewer Namespace
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