←Select platform

SelectFirstResult Property

Summary

Indicates whether to select and bring the first result of the FindText operation into view.

Syntax
C#
C++/CLI
public bool SelectFirstResult { get; set; } 
public:  
   property bool SelectFirstResult 
   { 
      bool get() 
      void set(bool value) 
   } 

Property Value

true to set the first result from the Find Text operation as the selected text and scroll to it in the DocumentViewer.View; otherwise, false. The default value is true.

Remarks

All results for DocumentViewerText.Find will be available after the operation concludes. The results will be in order - by default the search's initial position is BeginPosition, but this can vary based on Start.

If SelectFirstResult is true, the first match in this list will automatically be set to the selected text (clearing any previous selected text) and brought into view. This can still be done manually if SelectFirstResult is false by using the bounds of the first result with DocumentViewerText.SetSelectedTextItems and ImageViewer.EnsureBoundsVisible.

To control whether a single match or all matches are returned, use FindAll. To highlight the results, see RenderResults.

For more information, refer to DocumentViewerText.Find.

History

19.0.0.49
Added
Example
C#
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; 
 
 
var text = _documentViewer.Text; 
 
// Make sure we get the page text if necessary 
text.AutoGetText = true; 
 
// We will find all matches of "LEAD", ignoring the case 
var options = new DocumentViewerFindText(); 
 
// The text 
options.Text = "LEAD"; 
// Ignore case 
options.MatchCase = false; 
// Any word that contains the phrase 
options.WholeWordsOnly = false; 
 
// Find all results in the bounds, not just the first 
options.FindAll = true; 
 
// Highlight the results in the View 
options.RenderResults = true; 
// Optionally change the highlight color 
//DocumentViewerText.FoundTextBrush = new SolidBrush(Color.FromArgb(52, Color.Brown)); 
 
// Set the bounds 
bool isFindingNext = true; 
// We set the bounds as the whole document, but below we can specify to start wherever text is selected 
// or at the current page 
var topOfFirstPage = DocumentViewerTextPosition.CreateBeginOfPage(1); 
var bottomOfLastPage = DocumentViewerTextPosition.CreateEndOfPage(_documentViewer.PageCount); 
if (isFindingNext) 
{ 
   // Make the beginning bound "higher up" the page so we search "down" the page. 
   options.BeginPosition = topOfFirstPage; 
   options.EndPosition = bottomOfLastPage; 
} 
else 
{ 
   // Make the beginning bound "lower down" the page so we search "up" the page. 
   options.BeginPosition = bottomOfLastPage; 
   options.EndPosition = topOfFirstPage; 
} 
 
// Select the first result in the View (automatically scrolls View also) 
options.SelectFirstResult = true; 
 
if (text.HasAnySelectedText) 
{ 
   // Setting this value to AfterSelection allows us to search forward from the selection, so multiple 
   // uses of this same options object will cycle us through all the matches! 
   // (If no selected text actually exists, search will default to beginPosition.) 
   options.Start = DocumentViewerFindTextStart.AfterSelection; 
} 
else 
{ 
   // We could start at the begin position, but it makes more UI sense to start from the user's current page. 
   // Search will loop back around to the begin position - this just changes the starting point and order of results. 
   options.Start = DocumentViewerFindTextStart.ManualPosition; 
   if (isFindingNext) 
      options.ManualStartPosition = DocumentViewerTextPosition.CreateBeginOfPage(_documentViewer.CurrentPageNumber); 
   else 
      options.ManualStartPosition = DocumentViewerTextPosition.CreateEndOfPage(_documentViewer.CurrentPageNumber); 
} 
 
// If we were just looking for the first match, we could use "Loop" to loop around 
// if we found nothing between the start position and the end bound. 
//options.Loop = true; 
 
// You will likely want to clear the previous highlighted results 
// on the screen so only our new results will show. 
text.ClearRenderedFoundText(); 
 
// Search 
var results = text.Find(options); 
int resultsCount = results != null ? results.Count : 0; 
 
if (resultsCount > 0) 
   Console.WriteLine(string.Format("Found {0} results", resultsCount)); 
else 
   Console.WriteLine("No matches found."); 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2024 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Document.Viewer.WinForms Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.