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Add(string,int,int) Method

Summary

Adds a new thumbnail element(s) from an image to the end of the WebThumbnailsViewer control.

Syntax

C++

public void Add( 
   string imageUrl, 
   int firstPage, 
   int lastPage 
)

  
Public Overloads Sub Add( _ 
   ByVal imageUrl As String, _ 
   ByVal firstPage As Integer, _ 
   ByVal lastPage As Integer _ 
)

public: 
void Add(  
   String^ imageUrl, 
   int firstPage, 
   int lastPage 
)

Parameters

imageUrl
The image URL or image virtual path to which to add its page(s) as thumbnail(s). Each page will be added as a new thumbnail.

firstPage
The 1-based index of the first page to load.

lastPage
The 1-based index of the last page to load. Must be greater than or equal to firstPage. You can pass -1 to load from firstPage to the last page in the file.

Example

This example initializes the WebThumbnailViewer control and connect it to a WebImageViewer control, then loads "multipage.tif" file into it, and select the first thumbnail to display its image into the WebImageViewer control.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Web.Controls; 
 
public void WebThumbnailViewer_InitWebThumbnailViewer(WebThumbnailViewer webThumbnailViewer, string webViewerID) 
{ 
   webThumbnailViewer.CacheFolder = "MyCacheFolderName"; 
   webThumbnailViewer.ResourcesPath = @"Resources"; 
   webThumbnailViewer.HorizontalAlignMode = ImageViewerAlignMode.Center; 
   webThumbnailViewer.VerticalAlignMode = ImageViewerAlignMode.Center; 
   webThumbnailViewer.LayoutDirection = LayoutDirection.Horizontal; 
   webThumbnailViewer.ThumbStyle.BackColor = Color.LightGray; 
   webThumbnailViewer.ThumbStyle.Cursor = "pointer"; 
   webThumbnailViewer.ThumbStyle.HoverBackColor = Color.Gray; 
   webThumbnailViewer.SelectedThumbStyle.BackColor = Color.Red; 
   webThumbnailViewer.SelectedThumbStyle.Cursor = "default"; 
   webThumbnailViewer.SelectedThumbStyle.HoverBackColor = Color.DarkRed; 
   webThumbnailViewer.ThumbPadding = 10; 
   webThumbnailViewer.ThumbSpacing = 10; 
   webThumbnailViewer.ViewerID = webViewerID; 
   webThumbnailViewer.ThumbSize = new Size(120, 120); 
   webThumbnailViewer.BrowserImageFormat = BrowserImageFormat.Png; 
 
   // Enable loading the text files. 
   // inputProfile.xml Contains the following: 
   // <ImageGenerator> 
   //    <InputProfile> 
   //       <TxtEnabled>true</TxtEnabled> 
   //    </InputProfile> 
   // </ImageGenerator> 
   webThumbnailViewer.InputProfile = webThumbnailViewer.Page.MapPath("Resources\\inputProfile.xml"); 
 
   // Set the quality factor for images displayed by the thumbnail viewer, note that the BrowserImageFormat is set to Png. 
   // outputProfile.xml Contains the following: 
   // <ImageGenerator>    
   //    <OutputProfile> 
   //       <PngQualityFactor>9</PngQualityFactor> 
   //    </OutputProfile> 
   // </ImageGenerator> 
   webThumbnailViewer.OutputProfile = webThumbnailViewer.Page.MapPath("Resources\\outputProfile.xml"); 
 
   // Prevent the Internet Explorer from loading the thumbnail images in the Temporary Internet Folder. 
   webThumbnailViewer.DisableBrowserCaching = true; 
 
   webThumbnailViewer.Add(@"Resources\TextFile.txt", 1, -1); 
   webThumbnailViewer.SelectedIndex = 0; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Web.Controls 
 
Public Sub WebThumbnailViewer_InitWebThumbnailViewer(ByVal webThumbnailViewer As WebThumbnailViewer, ByVal webViewerID As String) 
   webThumbnailViewer.CacheFolder = "MyCacheFolderName" 
   webThumbnailViewer.ResourcesPath = "Resources" 
   webThumbnailViewer.HorizontalAlignMode = ImageViewerAlignMode.Center 
   webThumbnailViewer.VerticalAlignMode = ImageViewerAlignMode.Center 
   webThumbnailViewer.LayoutDirection = LayoutDirection.Horizontal 
   webThumbnailViewer.ThumbStyle.BackColor = Color.LightGray 
   webThumbnailViewer.ThumbStyle.Cursor = "pointer" 
   webThumbnailViewer.ThumbStyle.HoverBackColor = Color.Gray 
   webThumbnailViewer.SelectedThumbStyle.BackColor = Color.Red 
   webThumbnailViewer.SelectedThumbStyle.Cursor = "default" 
   webThumbnailViewer.SelectedThumbStyle.HoverBackColor = Color.DarkRed 
   webThumbnailViewer.ThumbPadding = 10 
   webThumbnailViewer.ThumbSpacing = 10 
   webThumbnailViewer.ViewerID = webViewerID 
   webThumbnailViewer.ThumbSize = New Size(120, 120) 
   webThumbnailViewer.BrowserImageFormat = BrowserImageFormat.Png 
 
   ' Enable loading the text files. 
   ' inputProfile.xml Contains the following: 
   ' <ImageGenerator> 
   '    <InputProfile> 
   '       <TxtEnabled>true</TxtEnabled> 
   '    </InputProfile> 
   ' </ImageGenerator> 
   webThumbnailViewer.InputProfile = webThumbnailViewer.Page.MapPath("Resources\inputProfile.xml") 
 
   ' Set the quality factor for images displayed by the thumbnail viewer, note that the BrowserImageFormat is set to Png. 
   ' outputProfile.xml Contains the following: 
   ' <ImageGenerator>    
   '    <OutputProfile> 
   '       <PngQualityFactor>9</PngQualityFactor> 
   '    </OutputProfile> 
   ' </ImageGenerator> 
   webThumbnailViewer.OutputProfile = webThumbnailViewer.Page.MapPath("Resources\outputProfile.xml") 
 
   ' Prevent the Internet Explorer from loading the thumbnail images in the Temporary Internet Folder. 
   webThumbnailViewer.DisableBrowserCaching = True 
 
   webThumbnailViewer.Add("Resources\TextFile.txt", 1, -1) 
   webThumbnailViewer.SelectedIndex = 0 
End Sub

Requirements

Target Platforms

Reference

WebThumbnailViewer Class

WebThumbnailViewer Members

Overload List

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Help Version 20.0.2020.3.31

Leadtools.Web Assembly

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Leadtools.Web.Handlers Namespace

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