Hi i want to compress all my png's using software called optiping but instead of doing it manually i want it to be done automatically on every compilation of my website i have the script which is mentioned below but i dont know how to run it. should i make a batch file , i tried that also but dont know how to get it executed while compilation and building process is going on.

If there is some other way to achieve this than please write the process and explain each step as i am new to powershell.

Here is the script which will search all png's in my website and try to compress them

gci -include *.png -recurse | foreach
 { $fileName = $_.FullName; cmd /c "C:\soft\png\optipng.exe -o7 `"$fileName`"" }

 you should be able to hook up an msbuild task during the build process. If you have a batch file.. you should be able to kick it off from msbuild.You may want to check out

http://msbuildtasks.tigris.org/ 

and see if there is a task that is already  available

 Thank you jeev for your quick reply

I want you to look at this post by omar al zabir

http://msmvps.com/blogs/omar/archive/2008/04/07/reduce-website-download-time-by-heavily-compressing-png-and-jpeg.aspx

Here he refers to many techniques of compressing but he has not specified where to place this code and in which file to place this code or how to place this code so can you please create a workaround seeing this article.

Many Thanx......

 Thank you jeev  the man omar has just posted the solution to my question and i am sharing it here but its not the exact same thing which i wanted he says that i have to run this scripts externally from the powershell shell to compress files inside my website folder and than copy them to production

Here is what Omar Al Zabir said:

Install powershell and run powershell

Go to you website folder within powershell console

Run the scripts

It will compress all the pictures inside your website folder

Now you can copy those compressed files to your production environment.