Do you know how to write C# code to use Shell32 to unzip a file? I am using .Net Framework 4.0

I am developing a C# application using VS2010 and .Net Framework 4.0

Do you know how to write C# code to use Shell32 to unzip a file ?

For ex:

let's assume I have a directory C:\TIFFILES   and in this directory,
I have a zipfile that of course has the file extension *.zip

and I want to unzip this file in this same folder C:\TIFFILES


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            const string TARGET_DIR_IN = @"\\C:\TIFFILES";
            string zipFilePath = Path.Combine(TARGET_DIR_IN, "???.zip");
                                             
            Shell32.Shell objShell = new Shell32.Shell();
            Shell32.Folder destinationFolder = objShell.NameSpace(TARGET_DIR_IN);
            Shell32.Folder sourceFile = objShell.NameSpace(zipFilePath);