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FilePageNumber Property

Summary

Gets the file page number for the RasterImageListItem if this item represent a single page is a multi page file.

Syntax

C++

public int FilePageNumber { get; set; }

  
Public Property FilePageNumber As Integer

public: 
property int FilePageNumber { 
   int get(); 
   void set (    int ); 
}

Property Value

The 1-based page number index in Image to display. The default value is 1.

Remarks

This property is valid only when calling LoadThumbnails(string,string,rasterthumbnailbrowserloadflags) and the flags paramter set to RasterThumbnailBrowserLoadFlags.ExpandMultiPage

Example

This example will create and populate a RasterImageList control with thumbnails of the pages in the multi-page image file.

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
 
public void RasterImageListItem_Page(RasterImageList imageList) 
{ 
   // Initialize the RasterCodecs class 
   RasterCodecs codecs = new RasterCodecs(); 
 
   // Clear existing items 
   imageList.Items.Clear(); 
 
   // Load a multi-page file 
   string fileName = Path.Combine(LEAD_VARS.ImagesDir, "eye.gif"); 
   RasterImage image = codecs.Load(fileName); 
 
   // Create the items (1 for each page) 
   for (int page = 1; page <= image.PageCount; page++) 
   { 
      RasterImageListItem item = new RasterImageListItem(); 
 
      item.Image = image;  // Use the same image for all items 
      item.Page = page;  // But with a different page number 
      item.Text = "Page " + page.ToString(); 
 
      // Add the item to the image list 
      imageList.Items.Add(item); 
   } 
 
 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

Imports Leadtools.WinForms 
Imports Leadtools 
Imports Leadtools.Codecs 
 
Public Sub RasterImageListItem_Page(ByVal imageList As RasterImageList) 
   ' Initialize the RasterCodecs class 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   ' Clear existing items 
   imageList.Items.Clear() 
 
   ' Load a multi-page file 
   Dim fileName As String = Path.Combine(LEAD_VARS.ImagesDir, "eye.gif") 
   Dim image As RasterImage = codecs.Load(fileName) 
 
   ' Create the items (1 for each page) 
   Dim page As Integer = 1 
   Do While page <= image.PageCount 
      Dim item As RasterImageListItem = New RasterImageListItem() 
 
      item.Image = image ' Use the same image for all items 
      item.Page = page ' But with a different page number 
      item.Text = "Page " & page.ToString() 
 
      ' Add the item to the image list 
      imageList.Items.Add(item) 
      page += 1 
   Loop 
 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

Requirements

Target Platforms

Reference

RasterImageListItem Class

RasterImageListItem Members

Help Version 19.0.2017.10.27

Leadtools.WinForms Assembly

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