Skip to Main Content
C# Cookbook, 2nd Edition
book

C# Cookbook, 2nd Edition

by Jay Hilyard, Stephen Teilhet
January 2006
Intermediate to advanced content levelIntermediate to advanced
1184 pages
43h 23m
English
O'Reilly Media, Inc.
Content preview from C# Cookbook, 2nd Edition
This is the Title of the Book, eMatter Edition
Copyright © 2007 O’Reilly & Associates, Inc. All rights reserved.
Finding the Location of All Occurrences of a String Within Another String
|
43
number of matches that can be made in the source string. If this check indicates that
you are able to keep this match, it is stored in the
occurrences List<int>.
2.5 Finding the Location of All Occurrences
of a String Within Another String
Problem
You need to search a string for every occurrence of a specific string. In addition, the
case sensitivity, or insensitivity, of the search needs to be controlled.
Solution
Using IndexOf or IndexOfAny in a loop, you can determine how many occurrences of
a character or string exist as well as their locations within the string. To find each
occurrence of a string in another string using a case-sensitive search, use the follow-
ing code:
using System;
using System.Collections;
using System.Collections.Generic;
public static int[] FindAll(string matchStr, string searchedStr, int startPos)
{
int foundPos = -1; // -1 represents not found.
int count = 0;
List<int> foundItems = new List<int>( );
do
{
foundPos = searchedStr.IndexOf(matchStr, startPos);
if (foundPos > -1)
{
startPos = foundPos + 1;
count++;
foundItems.Add(foundPos);
Console.WriteLine("Found item at position: " + foundPos.ToString( ));
}
} while (foundPos > -1 && startPos < searchedStr.Length);
return ((int[])foundItems.ToArray( ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

C# Cookbook

C# Cookbook

Joe Mayo
C# Cookbook

C# Cookbook

Stephen Teilhet, Jay Hilyard
Head First C#, 4th Edition

Head First C#, 4th Edition

Andrew Stellman, Jennifer Greene

Publisher Resources

ISBN: 0596100639Supplemental ContentCatalog PageErrata