Compare row based cell in excel

http://www.aspose.com/docs/display/cellsnet/Data+Sorting

check the link above that gives you an idea.

and also with out using any .dll files, you cant compare two excel cells using C# code.

thanks reply without using third party dll . how to compare

thanks reply without using third party dll . how to compare

If your question is using coding, Yes you need to use third party DLL's like aspose.cells

you can more about it at www.aspose.com

or

using some tool, yes there are many like BeyondCompare

If you find my post as useful then accept my reply as answer. :)