C#

[DllImport("mpr.dll")]
public static extern int WNetOpenEnum(ResourceScope dwScope, ResourceType dwType, ResourceUsage dwUsage, NETRESOURCE lpNetResource, out IntPtr lphEnum);

[DllImport("mpr.dll")]
public static extern int WNetEnumResource(IntPtr hEnum, ref uint lpcCount, IntPtr lpBuffer, ref uint lpBufferSize);
		
[DllImport("mpr.dll")]
public static extern int WNetCloseEnum(IntPtr hEnum);

[StructLayout(LayoutKind.Sequential)]
public class NETRESOURCE
{
	public ResourceScope		dwScope = 0;
	public ResourceType		dwType = 0;
	public ResourceDisplayType	dwDisplayType = 0;
	public ResourceUsage		dwUsage = 0;
	public string			lpLocalName = null;
	public string			lpRemoteName = null;
	public string			lpComment = null;
	public string			lpProvider = null;
}

public enum ResourceScope
{
	RESOURCE_CONNECTED = 1,
	RESOURCE_GLOBALNET,
	RESOURCE_REMEMBERED,
}

public enum ResourceType
{
	RESOURCETYPE_ANY = 0,
	RESOURCETYPE_DISK,
	RESOURCETYPE_PRINT,
}

public enum ResourceDisplayType
{
	RESOURCEDISPLAYTYPE_GENERIC = 0,
	RESOURCEDISPLAYTYPE_DOMAIN,
	RESOURCEDISPLAYTYPE_SERVER,
	RESOURCEDISPLAYTYPE_SHARE,
}

public enum ResourceUsage
{
	RESOURCEUSAGE_ALL = 0, 
	RESOURCEUSAGE_CONNECTABLE,
	RESOURCEUSAGE_CONTAINER,
}

public const int NO_ERROR = 0;
public const int ERROR_NO_MORE_ITEMS = 259;

class ZipHolder
{
   private ZipHolder()
   {
   }

   private ZipArchive zip = null;

   public ZipHolder Instance = new ZipHolder();

   public void Open(string name)
   {
     zip = new ZipArchive(name);
     ....
   }

   public ZipArchive Zip
   {
       get { return zip; }
   }
}

public void ShowImage(int theNum)
{
    AbstractFile imageFile = ZipHolder.Instance.Zip.GetFile(zipFiles[num]);
    if (imageFile.Exists)
    {
        using( Stream stImage = imageFile.OpenRead() )
        {
             pbMain.Image = Image.FromStream(stImage);
        }
    }
}

using (FileStream stream = new FileStream(filename, FileMode.OpenOrCreate, FileAccess.Write))
{
  using (StreamWriter swr = new StreamWriter(stream))
  {
    swr.WriteLine(this.Title); // etc.
    swr.Flush();
  }
}