string replace using Linq in c#

Question


public class Abbreviation
{
    public string ShortName { get; set; }
    public string LongName { get; set; }
}

I have a list of Abbreviation objects like this:


List abbreviations = new List();
abbreviations.add(new Abbreviation() {ShortName = "exp.", LongName = "expression"});
abbreviations.add(new Abbreviation() {ShortName = "para.", LongName = "paragraph"});
abbreviations.add(new Abbreviation() {ShortName = "ans.", LongName = "answer"});

string test = "this is a test exp. in a para. contains ans. for a question";

string result = test.Replace("exp.", "expression")
...

I expect the result to be: "this is a test expression in a paragraph contains answer for a question"

Currently I am doing:


foreach (Abbreviation abbreviation in abbreviations)
{
    test = test.Replace(abbreviation.ShortName, abbreviation.LongName);
}
result = test;

Wondering if there is a better way using a combination of Linq and Regex.

LINQ isn't a solution to every problem, what you have written is fine. — Phill
– Phill, Commented Feb 28, 2011 at 2:00

p.campbell · Accepted Answer · 2013-07-22 21:26:00Z

14

If you really wanted to shorten your code, you could use the ForEach extension method on the List:

abbreviations.ForEach(x=> test=test.Replace(x.ShortName, x.LongName));

edited Jul 22, 2013 at 21:26

answered Feb 28, 2011 at 2:04

p.campbell

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4 Comments

BrokenGlass Over a year ago

technically this isn't LINQ ;-)

RPM1984 Over a year ago

technically it's not functional programming either - blogs.msdn.com/b/ericlippert/archive/2009/05/18/…

coder Over a year ago

I knew there is always a better way than what I normally do. It works great. Thanks to you and Mike.

DharaPPatel Over a year ago

i want the same but how do i find part of string and replace it with some other text ? please suggest.

Mike Cole · Accepted Answer · 2011-02-28 02:06:10Z

4

You could use the ForEach method. Also, a StringBuilder should make the operations on your string more efficient:

var test = new StringBuilder("this is a test exp. in a para. contains ans. for a question");
abbreviations.ForEach(abb => test = test.Replace(abb.ShortName, abb.LongName));
return test.ToString();

answered Feb 28, 2011 at 2:06

Mike Cole

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Comments

rejo · Accepted Answer · 2014-05-09 11:36:11Z

1

Try this one

TestList.ForEach(x => x.TestType.Replace("", "DataNotAvailable"));

or the one below

foreach (TestModel item in TestList.Where(x => x.ID == ""))
{
    item.ID = "NoDataAvailable";
}

edited May 9, 2014 at 11:36

answered May 9, 2014 at 11:05

rejo

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Comments

Pranay Aryal · Accepted Answer · 2023-12-14 17:02:41Z

0

var newList = someList.Select(s => s.Replace("XX", "1")).ToList();

answered Dec 14, 2023 at 17:02

Pranay Aryal

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