change the extension of a file

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hiee guys
I have a que. plz give me reply
how to change the extension of a file using C#
eg:- .dat file to .xls

Thanxx in advance

Posted 12-Dec-12 0:19am

indrajeet jadhav

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codeninja-C# 12-Dec-12 9:19am

may i know why you want this?Is that file contains a clear value or encoded value? are you try to open that file in wordpad?
--Sj

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Krunal Rohit · Answer 1 · 2012-12-12T00:21:00

Solution 1

http://heathesh.com/post/2009/10/01/Change-a-file-extension-using-C-(rename-a-file).aspx[^]
http://stackoverflow.com/questions/5259961/change-file-extension-c-sharp[^]

or else Goooooooogle[^]

Posted 12-Dec-12 0:21am

Krunal Rohit

prashant patil 4987 · Answer 2 · 2012-12-12T00:23:00

Solution 2

Refer Below Link
Hope it will help full for you.
Link 1[^]

Link 2
[^]
all the best

Posted 12-Dec-12 0:23am

prashant patil 4987

Sperneder Patrick · Answer 3 · 2012-12-12T00:45:00

hmm.. let me explain.

It is not possible to change a filename (nor the extension) of a file with .NET. This just is not implemented.

BUT you can do as follows: Copy the content of the existing file into a new file (name it as you want), afterwards delete the source file.

C#

private void RenameFile(string filename, string newFileName)
{
    File.WriteAllText(newFileName, File.ReadAllText(filename, Encoding.Default));
    File.Delete(filename);
}

regards Patrick