title: Powershell output after zip using
body: <p>In my script I use zip function :</p>
  
  <pre><code>[Reflection.Assembly]::LoadWithPartialName( "System.IO.Compression.FileSystem" )
  [System.IO.Compression.ZipFile]::CreateFromDirectory( $sourcedir, $zipfilename)
  </code></pre>
  
  <p>but this generate a verbose output in the cmd :</p>
  
  <pre><code>CodeBase            : file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.IO.Compression.FileSystem/v4.0_4.0.0.0__b77a5c561934e089/System.IO.Compression.FileSystem.dll
  FullName            : System.IO.Compression.FileSystem, Version=4.0.0.0, *Culture=neutral, PublicKeyToken=b77a5c561934e089
  EntryPoint          :
  DefinedTypes        : {System.IO.Compression.ZipFile, Sy*stem.IO.Compression.ZipFileExtensions, System.IO.Compression.SR}
  Evidence            : {&lt;System.Security.Policy.GacInstalled version="1"/&gt;
                        , &lt;StrongName version="1"
                        Key="00000000000000000400000000000000"
                        Name="System.IO.Compression.FileSystem"
                        Version="4.0.0.0"/&gt;
                        , &lt;System.Security.Policy.Url version="1"&gt;
                        &lt;Url&gt;file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.IO.Compression.FileSystem/v4.0_4.0.0.0__b77a5c561934e089/System.IO.Compression.FileSystem.dll&lt;/Url&gt;
                        &lt;/System.Security.Policy.Url&gt;
  </code></pre>
  
  <p>How can I switch off those messages ?</p>