differences in text

[Mark]

Hi,

I write an application in which user is able to write documents. When
user save document, I remember also old version.
When I have two versions of document, I would like to be able to
detect differences in text. Deleted text color on red, added text
color on green, text witchout changes leave white.

Do you know any libraries, which can help me to detect differences in
text ?

Thanks for help

 

[Pavel Minaev]

I write an application in which user is able to write documents. When
user save document, I remember also old version.
When I have two versions of document, I would like to be able to
detect differences in text. Deleted text color on red, added text
color on green, text witchout changes leave white.

Do you know any libraries, which can help me to detect differences in
text ?

http://stackoverflow.com/questions/138331/any-decent-text-diff-merge-engine-for-net