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A Generic Diff/Patch Utility written in C#

, 27 May 2009 CPOL
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Generic Diff/Patch Utility written in C#

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Have you ever wanted or needed a diff utility optimized for the .NET platform.

This article provides an implementation of a diff utility written in C#.

It operates over generics, so you can provide lists of anything to be diffed or patched,
including strings (such as lines from files), int, objects, or even bytes.

Example of using the Diff class to diff 2 text files

List<string> a = new List<string>();

List<string> b = new List<string>();

StreamReader fs1 = new StreamReader(argv[0]);

StreamReader fs2 = new StreamReader(argv[1]);

string line;

while ((line = fs1.ReadLine()) != null)




while ((line = fs2.ReadLine()) != null)






Item[] diff_items = Diff2.Diff<string>(a.ToArray(), b.ToArray());

This performs the diff. The final parameter indicates whether the actual differences should be included in the edit script when the diff is performed.


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


About the Author

kevin delafield

United States United States
No Biography provided

Comments and Discussions

GeneralMy vote of 2 Pinmembergam6it28-Jul-11 22:33 
GeneralSeems very similar to another one. PinmemberVladimir Vasiltsov17-Feb-10 10:03 
GeneralFile Formats PinmemberSCADirector3-Jan-08 8:54 
QuestionDid you test this??? PinmemberDARKHalf4-Feb-07 1:41 
AnswerRe: Did you test this??? PinmemberAutoDeveloper17-May-07 3:05 
QuestionRe: Did you test this??? Pinmembermrwizard82d126-Jul-07 17:42 
AnswerRe: Did you test this??? Pinmemberkevin delafield27-May-09 22:27 
GeneralRe: Did you test this??? Pinmembermrwizard82d128-May-09 4:42 
GeneralMore Information PinmemberSteve Hansen24-Aug-06 22:25 
GeneralRe: More Information Pinmemberdiilbert25-Aug-06 2:30 
GeneralRe: More Information PinmemberSteven Roebert25-Aug-06 11:10 
GeneralRe: More Information PinmemberPIEBALDconsult15-Dec-06 3:34 
GeneralRe: More Information Pinmemberkevin delafield27-May-09 22:27 

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