i want to zip a file in c#

1. Get DLL for http://dotnetzip.codeplex.com/[^]
2. Add a reference to the DLL.
3. Import the namespace by adding: using Ionic.Zip;

and use the following code

using (ZipFile zip = new ZipFile())
{
    zip.AddFile("C:\test\test.txt");
    zip.AddFile("C:\test\test2.txt");
    zip.Save("C:\output.zip");
}

Hope this helps

My favorite so far is
Kellerman Software's zip tool[^]. It can unzip whole directories with included files recursively, which saved me some tinkering with those.

try this: http://msdn.microsoft.com/en-us/library/system.io.compression.zipfile.aspx[^]