static extern int SHQueryRecycleBin(string pszRootPath, ref SHQUERYRBINFO

   pSHQueryRBInfo);

public struct SHQUERYRBINFO

    SHQUERYRBINFO sqrbi = new SHQUERYRBINFO();

    sqrbi.cbSize = Marshal.SizeOf(typeof(SHQUERYRBINFO));

public struct SHQUERYRBINFO

    [DllImport("shell32.dll")] public static extern int SHQueryRecycleBin(string pszRootPath, ref SHQUERYRBINFO pSHQueryRBInfo);

     public struct SHQUERYRBINFO

        SHQUERYRBINFO shrb = new SHQUERYRBINFO();

        shrb.cbSize = Marshal.SizeOf(typeof(SHQUERYRBINFO));