diff --git a/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj b/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj
index 7a5b18af60..7a4084067a 100644
--- a/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj
+++ b/ICSharpCode.NRefactory/ICSharpCode.NRefactory.csproj
@@ -178,6 +178,10 @@
     <Compile Include="TypeSystem\Implementation\DefaultTypeDefinition.cs" />
     <Compile Include="TypeSystem\Implementation\SimpleConstantValue.cs" />
     <Compile Include="TypeSystem\Implementation\SimpleProjectContent.cs" />
+    <Compile Include="TypeSystem\Implementation\SpecializedEvent.cs" />
+    <Compile Include="TypeSystem\Implementation\SpecializedField.cs" />
+    <Compile Include="TypeSystem\Implementation\SpecializedMethod.cs" />
+    <Compile Include="TypeSystem\Implementation\SpecializedProperty.cs" />
     <Compile Include="TypeSystem\Implementation\TypeStorage.cs" />
     <Compile Include="TypeSystem\Implementation\TypeWithElementType.cs" />
     <Compile Include="TypeSystem\INamedElement.cs" />
diff --git a/ICSharpCode.NRefactory/TypeSystem/CecilLoader.cs b/ICSharpCode.NRefactory/TypeSystem/CecilLoader.cs
index fc08d0b2c2..e6d55860ca 100644
--- a/ICSharpCode.NRefactory/TypeSystem/CecilLoader.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/CecilLoader.cs
@@ -617,9 +617,8 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		{
 			if (parameter == null)
 				throw new ArgumentNullException("parameter");
-			DefaultParameter p = new DefaultParameter();
-			p.Name = parameter.Name;
-			p.Type = ReadTypeReference(parameter.ParameterType, typeAttributes: parameter, entity: parentMember);
+			var type = ReadTypeReference(parameter.ParameterType, typeAttributes: parameter, entity: parentMember);
+			DefaultParameter p = new DefaultParameter(type, parameter.Name);
 			
 			if (parameter.HasCustomAttributes)
 				AddAttributes(parameter, p.Attributes);
diff --git a/ICSharpCode.NRefactory/TypeSystem/ConstructedType.cs b/ICSharpCode.NRefactory/TypeSystem/ConstructedType.cs
index b089fe8894..140a1eae1f 100644
--- a/ICSharpCode.NRefactory/TypeSystem/ConstructedType.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/ConstructedType.cs
@@ -23,6 +23,29 @@ namespace ICSharpCode.NRefactory.TypeSystem
 	/// </remarks>
 	public class ConstructedType : Immutable, IType
 	{
+		sealed class Substitution : TypeVisitor
+		{
+			readonly IType[] typeArguments;
+			
+			public Substitution(IType[] typeArguments)
+			{
+				this.typeArguments = typeArguments;
+			}
+			
+			public override IType VisitTypeParameter(ITypeParameter type)
+			{
+				int index = type.Index;
+				if (type.ParentClass != null) {
+					if (index >= 0 && index < typeArguments.Length)
+						return typeArguments[index];
+					else
+						return SharedTypes.UnknownType;
+				} else {
+					return base.VisitTypeParameter(type);
+				}
+			}
+		}
+		
 		readonly ITypeDefinition genericType;
 		readonly IType[] typeArguments;
 		
@@ -118,7 +141,8 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		
 		public IEnumerable<IType> GetBaseTypes(ITypeResolveContext context)
 		{
-			throw new NotImplementedException();
+			Substitution substitution = new Substitution(typeArguments);
+			return genericType.GetBaseTypes(context).Select(t => t.AcceptVisitor(substitution));
 		}
 		
 		public IList<IType> GetNestedTypes(ITypeResolveContext context)
@@ -128,22 +152,54 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		
 		public IList<IMethod> GetMethods(ITypeResolveContext context)
 		{
-			throw new NotImplementedException();
+			Substitution substitution = new Substitution(typeArguments);
+			IList<IMethod> methods = genericType.GetMethods(context);
+			for (int i = 0; i < methods.Count; i++) {
+				SpecializedMethod m = new SpecializedMethod(methods[i]);
+				m.SetDeclaringType(this);
+				m.SubstituteTypes(context, substitution);
+				methods[i] = m;
+			}
+			return methods;
 		}
 		
 		public IList<IProperty> GetProperties(ITypeResolveContext context)
 		{
-			throw new NotImplementedException();
+			Substitution substitution = new Substitution(typeArguments);
+			IList<IProperty> properties = genericType.GetProperties(context);
+			for (int i = 0; i < properties.Count; i++) {
+				SpecializedProperty p = new SpecializedProperty(properties[i]);
+				p.SetDeclaringType(this);
+				p.SubstituteTypes(context, substitution);
+				properties[i] = p;
+			}
+			return properties;
 		}
 		
 		public IList<IField> GetFields(ITypeResolveContext context)
 		{
-			throw new NotImplementedException();
+			Substitution substitution = new Substitution(typeArguments);
+			IList<IField> fields = genericType.GetFields(context);
+			for (int i = 0; i < fields.Count; i++) {
+				SpecializedField f = new SpecializedField(fields[i]);
+				f.SetDeclaringType(this);
+				f.ReturnType = f.ReturnType.Resolve(context).AcceptVisitor(substitution);
+				fields[i] = f;
+			}
+			return fields;
 		}
 		
 		public IList<IEvent> GetEvents(ITypeResolveContext context)
 		{
-			throw new NotImplementedException();
+			Substitution substitution = new Substitution(typeArguments);
+			IList<IEvent> events = genericType.GetEvents(context);
+			for (int i = 0; i < events.Count; i++) {
+				SpecializedEvent e = new SpecializedEvent(events[i]);
+				e.SetDeclaringType(this);
+				e.ReturnType = e.ReturnType.Resolve(context).AcceptVisitor(substitution);
+				events[i] = e;
+			}
+			return events;
 		}
 		
 		public override bool Equals(object obj)
diff --git a/ICSharpCode.NRefactory/TypeSystem/IMember.cs b/ICSharpCode.NRefactory/TypeSystem/IMember.cs
index 0c64a6c76a..f5e120ce07 100644
--- a/ICSharpCode.NRefactory/TypeSystem/IMember.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/IMember.cs
@@ -27,11 +27,11 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		IType DeclaringType { get; }
 		
 		/// <summary>
-		/// Gets the generic member this member is based on.
-		/// Returns null if this is not a specialized member.
+		/// Gets the original member definition for this member.
+		/// Returns <c>this</c> if this is not a specialized member.
 		/// Specialized members are the result of overload resolution with type substitution.
 		/// </summary>
-		IMember GenericMember { get; }
+		IMember MemberDefinition { get; }
 		
 		/// <summary>
 		/// Gets the return type of this member.
@@ -81,8 +81,9 @@ namespace ICSharpCode.NRefactory.TypeSystem
 			}
 		}
 		
-		IMember IMember.GenericMember {
+		IMember IMember.MemberDefinition {
 			get {
+				Contract.Ensures(Contract.Result<IMember>() != null);
 				return null;
 			}
 		}
diff --git a/ICSharpCode.NRefactory/TypeSystem/ITypeReference.cs b/ICSharpCode.NRefactory/TypeSystem/ITypeReference.cs
index 7406c101c2..3faff4ae0a 100644
--- a/ICSharpCode.NRefactory/TypeSystem/ITypeReference.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/ITypeReference.cs
@@ -28,21 +28,25 @@ namespace ICSharpCode.NRefactory.TypeSystem
 		/// <summary>
 		/// Gets all methods that can be called on this return type.
 		/// </summary>
+		/// <returns>A new mutable list</returns>
 		IList<IMethod> GetMethods(ITypeResolveContext context);
 		
 		/// <summary>
 		/// Gets all properties that can be called on this return type.
 		/// </summary>
+		/// <returns>A new mutable list</returns>
 		IList<IProperty> GetProperties(ITypeResolveContext context);
 		
 		/// <summary>
 		/// Gets all fields that can be called on this return type.
 		/// </summary>
+		/// <returns>A new mutable list</returns>
 		IList<IField> GetFields(ITypeResolveContext context);
 		
 		/// <summary>
 		/// Gets all events that can be called on this return type.
 		/// </summary>
+		/// <returns>A new mutable list</returns>
 		IList<IEvent> GetEvents(ITypeResolveContext context);
 	}
 	
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/AbstractMember.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/AbstractMember.cs
index 43ee6f2b10..97aef7d680 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/AbstractMember.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/AbstractMember.cs
@@ -51,7 +51,9 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 			this.name = name;
 		}
 		
-		/* do we really need copy constructor (for specialized members?)
+		/// <summary>
+		/// Copy constructor
+		/// </summary>
 		protected AbstractMember(IMember member)
 		{
 			if (member == null)
@@ -64,6 +66,7 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 			this.bodyRegion = member.BodyRegion;
 			this.name = member.Name;
 			this.accessibility = member.Accessibility;
+			this.entityType = member.EntityType;
 			this.IsSealed = member.IsSealed;
 			this.IsAbstract = member.IsAbstract;
 			this.IsShadowing = member.IsShadowing;
@@ -73,14 +76,13 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 			this.IsStatic = member.IsStatic;
 		}
 		
-		static IList<T> CopyList<T>(IList<T> inputList)
+		protected static IList<T> CopyList<T>(IList<T> inputList)
 		{
 			if (inputList.Count == 0)
 				return null;
 			else
 				return new List<T>(inputList);
 		}
-		 */
 		
 		public ITypeDefinition DeclaringTypeDefinition {
 			get { return declaringTypeDefinition; }
@@ -90,8 +92,8 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 			get { return declaringTypeDefinition; }
 		}
 		
-		public virtual IMember GenericMember {
-			get { return null; }
+		public virtual IMember MemberDefinition {
+			get { return this; }
 		}
 		
 		public ITypeReference ReturnType {
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultEvent.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultEvent.cs
index 880a2695fb..38cf3467ce 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultEvent.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultEvent.cs
@@ -23,6 +23,20 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 		{
 		}
 		
+		/// <summary>
+		/// Copy constructor
+		/// </summary>
+		protected DefaultEvent(IEvent ev)
+			: base(ev)
+		{
+			this.CanAdd = ev.CanAdd;
+			this.addAccessibility = ev.AddAccessibility;
+			this.CanRemove = ev.CanRemove;
+			this.removeAccessibility = ev.RemoveAccessibility;
+			this.CanInvoke = ev.CanInvoke;
+			this.invokeAccessibility = ev.InvokeAccessibility;
+		}
+		
 		public bool CanAdd {
 			get { return flags[FlagCanAdd]; }
 			set {
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultField.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultField.cs
index 361f14f073..9e811e8df7 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultField.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultField.cs
@@ -27,6 +27,13 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 		{
 		}
 		
+		protected DefaultField(IField f) : base(f)
+		{
+			this.constantValue = f.ConstantValue;
+			this.IsReadOnly = f.IsReadOnly;
+			this.IsVolatile = f.IsVolatile;
+		}
+		
 		public bool IsConst {
 			get { return constantValue != null; }
 		}
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultMethod.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultMethod.cs
index 17243d0756..b77904f3d3 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultMethod.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultMethod.cs
@@ -31,6 +31,17 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 		{
 		}
 		
+		/// <summary>
+		/// Copy constructor
+		/// </summary>
+		protected DefaultMethod(IMethod method) : base(method)
+		{
+			returnTypeAttributes = CopyList(returnTypeAttributes);
+			typeParameters = CopyList(typeParameters);
+			parameters = CopyList(parameters);
+			this.IsExtensionMethod = method.IsExtensionMethod;
+		}
+		
 		public IList<IAttribute> ReturnTypeAttributes {
 			get {
 				if (returnTypeAttributes == null)
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultParameter.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultParameter.cs
index e9304a80fe..377684a7c9 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultParameter.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultParameter.cs
@@ -20,6 +20,31 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 		DomRegion region;
 		byte flags;
 		
+		public DefaultParameter(ITypeReference type, string name)
+		{
+			if (type == null)
+				throw new ArgumentNullException("type");
+			if (name == null)
+				throw new ArgumentNullException("name");
+			this.type = type;
+			this.name = name;
+		}
+		
+		/// <summary>
+		/// Copy constructor
+		/// </summary>
+		public DefaultParameter(IParameter p)
+		{
+			this.name = p.Name;
+			this.type = p.Type;
+			this.attributes = p.Attributes;
+			this.defaultValue = p.DefaultValue;
+			this.region = p.Region;
+			this.IsRef = p.IsRef;
+			this.IsOut = p.IsOut;
+			this.IsParams = p.IsParams;
+		}
+		
 		protected override void FreezeInternal()
 		{
 			type.Freeze();
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultProperty.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultProperty.cs
index 855df24da4..8e85a924c6 100644
--- a/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultProperty.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/DefaultProperty.cs
@@ -30,6 +30,16 @@ namespace ICSharpCode.NRefactory.TypeSystem.Implementation
 		{
 		}
 		
+		protected DefaultProperty(IProperty p) : base(p)
+		{
+			this.getterAccessibility = p.GetterAccessibility;
+			this.setterAccessibility = p.SetterAccessibility;
+			this.parameters = CopyList(p.Parameters);
+			this.IsIndexer = p.IsIndexer;
+			this.CanGet = p.CanGet;
+			this.CanSet = p.CanSet;
+		}
+		
 		public bool IsIndexer {
 			get { return flags[FlagIsIndexer]; }
 			set {
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedEvent.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedEvent.cs
new file mode 100644
index 0000000000..6c2fdbe105
--- /dev/null
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedEvent.cs
@@ -0,0 +1,36 @@
+// Copyright (c) 2010 AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
+
+using System;
+
+namespace ICSharpCode.NRefactory.TypeSystem.Implementation
+{
+	/// <summary>
+	/// Represents a specialized IEvent (e.g. after type substitution).
+	/// </summary>
+	public class SpecializedEvent : DefaultEvent
+	{
+		readonly IMember memberDefinition;
+		IType declaringType;
+		
+		public SpecializedEvent(IEvent e) : base(e)
+		{
+			this.memberDefinition = e.MemberDefinition;
+			this.declaringType = e.DeclaringType;
+		}
+		
+		public override IType DeclaringType {
+			get { return declaringType; }
+		}
+		
+		public void SetDeclaringType(IType declaringType)
+		{
+			CheckBeforeMutation();
+			this.declaringType = declaringType;
+		}
+		
+		public override IMember MemberDefinition {
+			get { return memberDefinition; }
+		}
+	}
+}
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedField.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedField.cs
new file mode 100644
index 0000000000..ccdf9d5044
--- /dev/null
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedField.cs
@@ -0,0 +1,36 @@
+// Copyright (c) 2010 AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
+
+using System;
+
+namespace ICSharpCode.NRefactory.TypeSystem.Implementation
+{
+	/// <summary>
+	/// Represents a specialized IField (e.g. after type substitution).
+	/// </summary>
+	public class SpecializedField : DefaultField
+	{
+		readonly IMember memberDefinition;
+		IType declaringType;
+		
+		public SpecializedField(IField f) : base(f)
+		{
+			this.memberDefinition = f.MemberDefinition;
+			this.declaringType = f.DeclaringType;
+		}
+		
+		public override IType DeclaringType {
+			get { return declaringType; }
+		}
+		
+		public void SetDeclaringType(IType declaringType)
+		{
+			CheckBeforeMutation();
+			this.declaringType = declaringType;
+		}
+		
+		public override IMember MemberDefinition {
+			get { return memberDefinition; }
+		}
+	}
+}
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedMethod.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedMethod.cs
new file mode 100644
index 0000000000..99717ee193
--- /dev/null
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedMethod.cs
@@ -0,0 +1,51 @@
+// Copyright (c) 2010 AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
+
+using System;
+
+namespace ICSharpCode.NRefactory.TypeSystem.Implementation
+{
+	/// <summary>
+	/// Represents a specialized IMethod (e.g. after type substitution).
+	/// </summary>
+	public class SpecializedMethod : DefaultMethod
+	{
+		readonly IMember memberDefinition;
+		IType declaringType;
+		
+		public SpecializedMethod(IMethod m) : base(m)
+		{
+			this.memberDefinition = m.MemberDefinition;
+			this.declaringType = m.DeclaringType;
+		}
+		
+		public override IType DeclaringType {
+			get { return declaringType; }
+		}
+		
+		public void SetDeclaringType(IType declaringType)
+		{
+			CheckBeforeMutation();
+			this.declaringType = declaringType;
+		}
+		
+		public override IMember MemberDefinition {
+			get { return memberDefinition; }
+		}
+		
+		/// <summary>
+		/// Performts type substitution in parameter types and in the return type.
+		/// </summary>
+		public void SubstituteTypes(ITypeResolveContext context, TypeVisitor substitution)
+		{
+			this.ReturnType = this.ReturnType.Resolve(context).AcceptVisitor(substitution);
+			var p = this.Parameters;
+			for (int i = 0; i < p.Count; i++) {
+				IType newType = p[i].Type.Resolve(context).AcceptVisitor(substitution);
+				if (newType != p[i].Type) {
+					p[i] = new DefaultParameter(p[i]) { Type = newType };
+				}
+			}
+		}
+	}
+}
diff --git a/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedProperty.cs b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedProperty.cs
new file mode 100644
index 0000000000..59c9a7c009
--- /dev/null
+++ b/ICSharpCode.NRefactory/TypeSystem/Implementation/SpecializedProperty.cs
@@ -0,0 +1,51 @@
+// Copyright (c) 2010 AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under MIT X11 license (for details please see \doc\license.txt)
+
+using System;
+
+namespace ICSharpCode.NRefactory.TypeSystem.Implementation
+{
+	/// <summary>
+	/// Represents a specialized IProperty (e.g. after type substitution).
+	/// </summary>
+	public class SpecializedProperty : DefaultProperty
+	{
+		readonly IMember memberDefinition;
+		IType declaringType;
+		
+		public SpecializedProperty(IProperty p) : base(p)
+		{
+			this.memberDefinition = p.MemberDefinition;
+			this.declaringType = p.DeclaringType;
+		}
+		
+		public override IType DeclaringType {
+			get { return declaringType; }
+		}
+		
+		public void SetDeclaringType(IType declaringType)
+		{
+			CheckBeforeMutation();
+			this.declaringType = declaringType;
+		}
+		
+		public override IMember MemberDefinition {
+			get { return memberDefinition; }
+		}
+		
+		/// <summary>
+		/// Performts type substitution in parameter types and in the return type.
+		/// </summary>
+		public void SubstituteTypes(ITypeResolveContext context, TypeVisitor substitution)
+		{
+			this.ReturnType = this.ReturnType.Resolve(context).AcceptVisitor(substitution);
+			var p = this.Parameters;
+			for (int i = 0; i < p.Count; i++) {
+				IType newType = p[i].Type.Resolve(context).AcceptVisitor(substitution);
+				if (newType != p[i].Type) {
+					p[i] = new DefaultParameter(p[i]) { Type = newType };
+				}
+			}
+		}
+	}
+}
diff --git a/ICSharpCode.NRefactory/TypeSystem/TypeVisitor.cs b/ICSharpCode.NRefactory/TypeSystem/TypeVisitor.cs
index 774cfda4f8..af8ae4ca8f 100644
--- a/ICSharpCode.NRefactory/TypeSystem/TypeVisitor.cs
+++ b/ICSharpCode.NRefactory/TypeSystem/TypeVisitor.cs
@@ -6,7 +6,7 @@ using System;
 namespace ICSharpCode.NRefactory.TypeSystem
 {
 	/// <summary>
-	/// Description of ITypeVisitor.
+	/// Base class for the visitor pattern on <see cref="IType"/>.
 	/// </summary>
 	public abstract class TypeVisitor
 	{