public PdfTextSearchResults FindText(
    string text,
    PdfTextSearchParameters parameters
)

Public Function FindText(
    text As String,
    parameters As PdfTextSearchParameters
) As PdfTextSearchResults

using System.Collections.Generic;
using DevExpress.Pdf;

using (PdfDocumentProcessor documentProcessor = new PdfDocumentProcessor())
{
    // Load a document
    documentProcessor.LoadDocument(@"..\..\Document.pdf");

    // Define search words
    string[] words = { "DX-B5000", "DX-RX800" };

    // Specify search parameters
    PdfTextSearchParameters searchParameters = new PdfTextSearchParameters();
    searchParameters.CaseSensitive = true;
    searchParameters.WholeWords = true;

    foreach (string word in words)
    {
        // Get search results
        PdfTextSearchResults results = documentProcessor.FindText(word, searchParameters);

        // If the text is found, create a destination that positions the found text
        // at the upper window corner
        if (results.Status == PdfTextSearchStatus.Found)
        {
            PdfXYZDestination destination = new PdfXYZDestination(results.Page, 0, results.Rectangles[0].Top, null);

            // Create a bookmark associated with the destination
            PdfBookmark bookmark = new PdfBookmark() { Title = word, Destination = destination };

            // Add the bookmark to the bookmark list
            documentProcessor.Document.Bookmarks.Add(bookmark);
        }
    }
    // Save the modified document
    documentProcessor.SaveDocument(@"..\..\Result.pdf");
}

Imports System.Collections.Generic
Imports DevExpress.Pdf

Using documentProcessor As New PdfDocumentProcessor()

    ' Load a PDF document
    documentProcessor.LoadDocument("..\..\Document.pdf")

    ' Define search words
    Dim words() As String = { "DX-B5000", "DX-RX800" }

    ' Specify search parameters
    Dim searchParameters As New PdfTextSearchParameters()
    searchParameters.CaseSensitive = True
    searchParameters.WholeWords = True

    For Each word As String In words
        ' Get search results
        Dim results As PdfTextSearchResults = documentProcessor.FindText(word, searchParameters)

        ' If the text is found, create a destination that positions the found text
        ' at the upper window corner
        If results.Status = PdfTextSearchStatus.Found Then
            Dim destination As New PdfXYZDestination(results.Page, 0, results.Rectangles(0).Top, Nothing)

            ' Create a bookmark associated with the bookmark
            Dim bookmark As New PdfBookmark() With {.Title = word, .Destination = destination}

            ' Add the bookmark to the bookmark list
            documentProcessor.Document.Bookmarks.Add(bookmark)
        End If
    Next word
    ' Save the modified document
    documentProcessor.SaveDocument("..\..\Result.pdf")
End Using

// Get the search results from the FindText method called with search text and search parameters.
PdfTextSearchResults results = documentProcessor.FindText(word, searchParameters);

' Get the search results from the FindText method called with search text and search parameters.
Dim results As DevExpress.Pdf.PdfTextSearchResults = documentProcessor.FindText(word, searchParameters)
' If the desired text is found, create a destination that corresponds to the found text