Compare Strings in C#

Question

1.00/5 (1 vote)

See more:

Hi All,

I need to compare two files in C#.. If the files are same no need to display data. if the files are not same, and also need what are the differences in the file..
for example
string first = "this is the first content"

string second ="this is the second content"

if i compare these two string

It means i need 'Second' is the difference in the string...

Posted 16-Nov-11 3:32am

Member 8393790

Updated 16-Nov-11 3:33am

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

RaisKazi · Answer 1 · 2011-11-16T03:40:00

Solution 2

Only plain String Comparison may not help you for what you are planning to achieve.

Below link has a information on how you can identify content of the Two Files is same or not.

http://support.microsoft.com/kb/320348

In case, if their is a difference in the content of the Files, then you will have to write custom algorithm to identify those differences.

Posted 16-Nov-11 3:40am

RaisKazi

Updated 16-Nov-11 3:42am

v2

Comments

Sergey Alexandrovich Kryukov 16-Nov-11 14:28pm

My 5. Last sentence is essential. Actually, there is no common universal definition of what to consider a "difference", it's a matter of definition.
--SA

RaisKazi 16-Nov-11 23:05pm

Thank you SA.

RaviRanjanKr 16-Nov-11 14:47pm

My 5+

RaisKazi 16-Nov-11 23:05pm

Thank you Ravi.

Nish Nishant · Answer 2 · 2011-11-16T04:56:00

Solution 3

Without shame, I link to my own article here on CP:

An LCS based diff-ing library in C#[^]

Posted 16-Nov-11 4:56am

Nish Nishant

Comments

Sergey Alexandrovich Kryukov 16-Nov-11 14:26pm

A 5 without a shame :-)
--SA

Nish Nishant 16-Nov-11 14:28pm

Thanks SA!

RaisKazi 16-Nov-11 23:07pm

My 5. Thats a good article and should save a lot of time of OP.

deepakdynamite · Answer 3 · 2011-11-16T03:35:00

Solution 1

Check this out

An O(ND) Difference Algorithm for C#[^]

Posted 16-Nov-11 3:35am

deepakdynamite

Updated 16-Nov-11 4:42am

v3

Comments

LanFanNinja 16-Nov-11 10:39am

Three of the edits are my fault. I tried to fix your link twice before I realized the Treat my content as plain text, not as HTML check box was checked. Sorry :)