SubDocument.FindAll(Regex) Method

Finds all occurrences of a character pattern specified by the regular expression.

Namespace: DevExpress.XtraRichEdit.API.Native

Assembly: DevExpress.RichEdit.v19.1.Core.dll

Declaration

C#

DocumentRange[] FindAll(
    Regex regex
)

VB.NET

Function FindAll(
    regex As Regex
) As DocumentRange()

Parameters

Name	Type	Description
regex	Regex	A Regex object representing a regular expression to search.

Returns

Type	Description
DocumentRange[]	An array of DocumentRange objects representing ranges in the document matching the specified pattern.

Remarks

The default maximum length of a string that can be obtained in a regular expression search is 128 characters. Use the DocumentSearchOptions.RegExResultMaxGuaranteedLength property to change the maximum string length.

Example

This code snippet illustrates the use of the Regular Expression feature to find all six-letter words in a document.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/winforms-richedit-document-api-e5219

SearchAndReplace.vb

document.LoadDocument("Grimm.docx", DevExpress.XtraRichEdit.DocumentFormat.OpenXml)
document.InsertSection(document.Range.Start)
' Specify a regular expression that will find all six letter words.
Dim expr As New System.Text.RegularExpressions.Regex("\b\w{6}\b")
Dim sixLetterWords As New System.Collections.Specialized.StringCollection()
' Perform the search.
Dim found() As DocumentRange = document.FindAll(expr)
For Each r As DocumentRange In found
    sixLetterWords.Add(document.GetText(r))
Next r
document.BeginUpdate()
' Insert an ordered list of non-repetitive words in the beginning of the document.
Dim distinctWords = sixLetterWords.Cast(Of String)().Distinct().OrderByDescending(Function(s) s)
For Each s In distinctWords
    document.InsertText(document.Range.Start, s.ToString() & Environment.NewLine)
Next s
document.EndUpdate()

SearchAndReplace.cs

document.LoadDocument("Grimm.docx", DevExpress.XtraRichEdit.DocumentFormat.OpenXml);
document.InsertSection(document.Range.Start);
// Specify a regular expression that will find all six letter words.
System.Text.RegularExpressions.Regex expr =
    new System.Text.RegularExpressions.Regex("\\b\\w{6}\\b");
System.Collections.Specialized.StringCollection sixLetterWords =
    new System.Collections.Specialized.StringCollection();
// Perform the search.
DocumentRange[] found = document.FindAll(expr);
foreach (DocumentRange r in found)
{
    sixLetterWords.Add(document.GetText(r));
}
document.BeginUpdate();
// Insert an ordered list of non-repetitive words in the beginning of the document.
var distinctWords = sixLetterWords.Cast<string>().Distinct().OrderByDescending(s => s);
foreach (var s in distinctWords)
{
    document.InsertText(document.Range.Start, s.ToString() + Environment.NewLine);
}
document.EndUpdate();

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the FindAll(Regex) method.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

how-to-convert-static-urls-to-hyperlinks-e3448/CS/Form1.cs#L30

DocumentRange[] urls = richEditControl1.Document.FindAll(urlRegex);

wpf-richedit-document-api-t213968/CS/DXRichEditControlAPISample/CodeExamples/SearchAndReplaceActions.cs#L20

// Perform the search.
DocumentRange[] found = document.FindAll(expr);
foreach (DocumentRange r in found)

winforms-richedit-document-api-e5219/CS/RichEditAPISample/CodeExamples/SearchAndReplace.cs#L20

// Perform the search.
DocumentRange[] found = document.FindAll(expr);
foreach (DocumentRange r in found)

VB.NET

how-to-convert-static-urls-to-hyperlinks-e3448/VB/Form1.vb#L32

Dim urls() As DocumentRange = richEditControl1.Document.FindAll(urlRegex)

wpf-richedit-document-api-t213968/VB/DXRichEditControlAPISample/CodeExamples/SearchAndReplaceActions.vb#L15

' Perform the search.
Dim found() As DocumentRange = document.FindAll(expr)
For Each r As DocumentRange In found

winforms-richedit-document-api-e5219/VB/RichEditAPISample/CodeExamples/SearchAndReplace.vb#L15

' Perform the search.
Dim found() As DocumentRange = document.FindAll(expr)
For Each r As DocumentRange In found