Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/class/WindowsBase/ZipSharp/ZipHandle.cs

@@ -0,0 +1,32 @@
+// ZipFile.cs created with MonoDevelop
+// User: alan at 11:54 13/10/2008
+//
+// To change standard headers go to Edit->Preferences->Coding->Standard Headers
+//
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace zipsharp
+{
+	class ZipHandle : SafeHandle
+	{
+		public override bool IsInvalid {
+			get {
+				return handle == IntPtr.Zero;
+			}
+		}
+
+		public ZipHandle ()
+			: base (IntPtr.Zero, true)
+		{
+			
+		}
+
+		protected override bool ReleaseHandle()
+		{
+			NativeZip.CloseArchive (this);
+			return true;
+		}
+	}
+}