Problem: There are CA1063 warnings related to the implementation of I…

…Disposable

Solution: Fix implementations of Dispose, class and method modifiers

ZContext.cs

@@ -9,7 +9,7 @@ namespace ZeroMQ
 	/// <summary>
 	/// Creates <see cref="ZSocket"/> instances within a process boundary.
 	/// </summary>
-	public class ZContext : IDisposable
+	public sealed class ZContext : IDisposable
 	{
 		static Encoding _encoding = System.Text.Encoding.UTF8;
 
@@ -20,7 +20,6 @@ public class ZContext : IDisposable
 		public static Encoding Encoding
 		{
 			get { return _encoding; }
-			protected set { _encoding = value; }
 		}
 
 		private static readonly object SyncObject = new object();
@@ -323,13 +322,13 @@ public bool Terminate(out ZError error)
 			return true;
 		}
 
-		public virtual void Dispose()
+		public void Dispose()
 		{
 			GC.SuppressFinalize(this);
 			Dispose(true);
 		}
 
-		protected virtual void Dispose(bool disposing)
+		void Dispose(bool disposing)
 		{
 			if (disposing)
 			{

ZFrame.cs

@@ -13,7 +13,7 @@ namespace ZeroMQ
 	/// <summary>
 	/// A single part message, sent or received via a <see cref="ZSocket"/>.
 	/// </summary>
-	public class ZFrame : Stream, ICloneable, IDisposable
+	public sealed class ZFrame : Stream, ICloneable
 	{
 		public static ZFrame FromStream(Stream stream, long i, int l)
 		{
@@ -145,7 +145,7 @@ public ZFrame()
 			: this(Alloc(data, size), size)
 		{ } */
 
-		protected ZFrame(DispoIntPtr frameIntPtr, int size)
+		internal ZFrame(DispoIntPtr frameIntPtr, int size)
 			: base()
 		{
 			framePtr = frameIntPtr;
@@ -375,7 +375,7 @@ public override int ReadByte()
 			return byt;
 		}
 
-		public virtual byte ReadAsByte()
+		public byte ReadAsByte()
 		{
 			if (position + 1 > Length)
 				return default(byte);
@@ -385,7 +385,7 @@ public virtual byte ReadAsByte()
 			return byt;
 		}
 
-		public virtual Int16 ReadInt16()
+		public Int16 ReadInt16()
 		{
 			var bytes = new byte[2];
 			int len = Read(bytes, 0, 2);
@@ -397,7 +397,7 @@ public virtual Int16 ReadInt16()
 			return BitConverter.ToInt16(bytes, 0);
 		}
 
-		public virtual UInt16 ReadUInt16()
+		public UInt16 ReadUInt16()
 		{
 			var bytes = new byte[2];
 			int len = Read(bytes, 0, 2);
@@ -409,7 +409,7 @@ public virtual UInt16 ReadUInt16()
 			return BitConverter.ToUInt16(bytes, 0);
 		}
 
-		public virtual Char ReadChar()
+		public Char ReadChar()
 		{
 			var bytes = new byte[2];
 			int len = Read(bytes, 0, 2);
@@ -421,7 +421,7 @@ public virtual Char ReadChar()
 			return BitConverter.ToChar(bytes, 0);
 		}
 
-		public virtual Int32 ReadInt32()
+		public Int32 ReadInt32()
 		{
 			var bytes = new byte[4];
 			int len = Read(bytes, 0, 4);
@@ -433,7 +433,7 @@ public virtual Int32 ReadInt32()
 			return BitConverter.ToInt32(bytes, 0);
 		}
 
-		public virtual UInt32 ReadUInt32()
+		public UInt32 ReadUInt32()
 		{
 			var bytes = new byte[4];
 			int len = Read(bytes, 0, 4);
@@ -445,7 +445,7 @@ public virtual UInt32 ReadUInt32()
 			return BitConverter.ToUInt32(bytes, 0);
 		}
 
-		public virtual Int64 ReadInt64()
+		public Int64 ReadInt64()
 		{
 			var bytes = new byte[8];
 			int len = Read(bytes, 0, 8);
@@ -457,7 +457,7 @@ public virtual Int64 ReadInt64()
 			return BitConverter.ToInt64(bytes, 0);
 		}
 
-		public virtual UInt64 ReadUInt64()
+		public UInt64 ReadUInt64()
 		{
 			var bytes = new byte[8];
 			int len = Read(bytes, 0, 8);
@@ -616,7 +616,7 @@ public override void Write(byte[] buffer, int offset, int count)
 			position += count;
 		}
 
-		public virtual void Write(byte value)
+		public void Write(byte value)
 		{
 			if (position + 1 > Length)
 			{
@@ -904,7 +904,7 @@ public override string ToString()
 			return ToString(ZContext.Encoding);
 		}
 
-		public virtual string ToString(Encoding encoding)
+		public string ToString(Encoding encoding)
 		{
 			if (Length > -1)
 			{

ZSocket.cs

@@ -92,15 +92,15 @@ protected bool Initialize(out ZError error)
 
 		public void Dispose()
 		{
-			GC.SuppressFinalize(this);
 			Dispose(true);
-		}
+			GC.SuppressFinalize(this);
+        }
 
-		/// <summary>
-		/// Releases the unmanaged resources used by the <see cref="ZSocket"/>, and optionally disposes of the managed resources.
-		/// </summary>
-		/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
-		protected virtual void Dispose(bool disposing)
+        /// <summary>
+        /// Releases the unmanaged resources used by the <see cref="ZSocket"/>, and optionally disposes of the managed resources.
+        /// </summary>
+        /// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool disposing)
 		{
 			if (disposing)
 			{

ZThread.cs

@@ -119,13 +119,13 @@ public virtual void Close()
 		/// <summary>
 		/// Releases all resources used by the current instance, including the frontend and backend sockets.
 		/// </summary>
-		public virtual void Dispose()
+		public void Dispose()
 		{
-			GC.SuppressFinalize(this);
 			Dispose(true);
-		}
+            GC.SuppressFinalize(this);
+        }
 
-		protected abstract void Run();
+        protected abstract void Run();
 
 		/// <summary>
 		/// Stops the device and releases the underlying sockets. Optionally disposes of managed resources.

lib/DispoIntPtr.Ansi.cs

@@ -7,7 +7,7 @@ namespace ZeroMQ.lib
 	using System.Threading;
 	using System.Runtime.InteropServices;
 
-	public partial class DispoIntPtr : IDisposable
+	internal sealed partial class DispoIntPtr : IDisposable
 	{
 		public static class Ansi
 		{

lib/DispoIntPtr.cs

@@ -7,7 +7,7 @@ namespace ZeroMQ.lib
 	using System.Threading;
 	using System.Runtime.InteropServices;
 
-	public partial class DispoIntPtr : IDisposable
+    internal sealed partial class DispoIntPtr : IDisposable
 	{
 		private delegate DispoIntPtr AllocStringNativeDelegate(string str, out int byteCount);
 
@@ -113,7 +113,7 @@ public void Dispose()
 			GC.SuppressFinalize(this);
 		}
 
-		protected void Dispose(bool disposing)
+		void Dispose(bool disposing)
 		{
 			// TODO: instance ThreadStatic && do ( o == null ? return : ( lock(o, ms), check threadId, .. ) ) 
 			IntPtr handle = _ptr;