diff --git a/src/Libraries/NRefactory/Project/NRefactory.csproj b/src/Libraries/NRefactory/Project/NRefactory.csproj
index f355c70f7f..1819cabcdd 100644
--- a/src/Libraries/NRefactory/Project/NRefactory.csproj
+++ b/src/Libraries/NRefactory/Project/NRefactory.csproj
@@ -23,19 +23,19 @@
     <FileAlignment>4096</FileAlignment>
     <RunCodeAnalysis>False</RunCodeAnalysis>
     <CodeAnalysisRules>-Microsoft.Design#CA1002;-Microsoft.Design#CA1020;-Microsoft.Design#CA1051;-Microsoft.Design#CA1062;-Microsoft.Globalization#CA1303;-Microsoft.Globalization#CA1305;-Microsoft.Naming#CA1704;-Microsoft.Performance#CA1800;-Microsoft.Performance#CA1805;-Microsoft.Usage#CA2211;-Microsoft.Usage#CA2227</CodeAnalysisRules>
-    <TargetFrameworkVersion>v2.0</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <Optimize>False</Optimize>
     <CheckForOverflowUnderflow>True</CheckForOverflowUnderflow>
-    <DefineConstants>TEST;DEBUG</DefineConstants>
+    <DefineConstants>TEST;DEBUG;NET35</DefineConstants>
     <OutputPath>..\..\..\..\bin\</OutputPath>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <Optimize>True</Optimize>
     <CheckForOverflowUnderflow>False</CheckForOverflowUnderflow>
-    <DefineConstants>TEST</DefineConstants>
+    <DefineConstants>TEST;NET35</DefineConstants>
     <OutputPath>..\..\..\..\bin\</OutputPath>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
   </PropertyGroup>
@@ -49,11 +49,16 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
+    <Reference Include="System.Core">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <None Include="Resources\ICSharpCode.NRefactory.snk" />
     <None Include="Src\Lexer\BuildKeywords.pl" />
     <Compile Include="Configuration\AssemblyInfo.cs" />
+    <Compile Include="Src\AstBuilder\ExpressionBuilder.cs" />
+    <Compile Include="Src\AstBuilder\StatementBuilder.cs" />
     <Compile Include="Src\Lexer\AbstractLexer.cs" />
     <Compile Include="Src\Lexer\CSharp\ConditionalCompilation.cs" />
     <Compile Include="Src\Lexer\CSharp\Keywords.cs" />
@@ -152,6 +157,9 @@
     <Folder Include="Src\Ast" />
     <Folder Include="Src\Ast\General" />
   </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Src\AstBuilder" />
+  </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>..\src\Tools\UpdateAssemblyInfo\bin\Debug\UpdateAssemblyInfo.exe</PreBuildEvent>
diff --git a/src/Libraries/NRefactory/Project/Src/AstBuilder/ExpressionBuilder.cs b/src/Libraries/NRefactory/Project/Src/AstBuilder/ExpressionBuilder.cs
new file mode 100644
index 0000000000..373c84e98d
--- /dev/null
+++ b/src/Libraries/NRefactory/Project/Src/AstBuilder/ExpressionBuilder.cs
@@ -0,0 +1,58 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <author name="Daniel Grunwald"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.NRefactory.Ast;
+
+namespace ICSharpCode.NRefactory.AstBuilder
+{
+	#if NET35
+	/// <summary>
+	/// Extension methods for NRefactory.Ast.Expression.
+	/// </summary>
+	public static class ExpressionBuilder
+	{
+		public static IdentifierExpression Identifier(string identifier)
+		{
+			return new IdentifierExpression(identifier);
+		}
+		
+		public static MemberReferenceExpression Member(this Expression targetObject, string memberName)
+		{
+			if (targetObject == null)
+				throw new ArgumentNullException("targetObject");
+			return new MemberReferenceExpression(targetObject, memberName);
+		}
+		
+		public static InvocationExpression Call(this Expression callTarget, string methodName, params Expression[] arguments)
+		{
+			if (callTarget == null)
+				throw new ArgumentNullException("callTarget");
+			return Call(Member(callTarget, methodName), arguments);
+		}
+		
+		public static InvocationExpression Call(this Expression callTarget, params Expression[] arguments)
+		{
+			if (callTarget == null)
+				throw new ArgumentNullException("callTarget");
+			if (arguments == null)
+				throw new ArgumentNullException("arguments");
+			return new InvocationExpression(callTarget, new List<Expression>(arguments));
+		}
+		
+		public static ObjectCreateExpression New(this TypeReference createType, params Expression[] arguments)
+		{
+			if (createType == null)
+				throw new ArgumentNullException("createType");
+			if (arguments == null)
+				throw new ArgumentNullException("arguments");
+			return new ObjectCreateExpression(createType, new List<Expression>(arguments));
+		}
+	}
+	#endif
+}
diff --git a/src/Libraries/NRefactory/Project/Src/AstBuilder/StatementBuilder.cs b/src/Libraries/NRefactory/Project/Src/AstBuilder/StatementBuilder.cs
new file mode 100644
index 0000000000..28117b9537
--- /dev/null
+++ b/src/Libraries/NRefactory/Project/Src/AstBuilder/StatementBuilder.cs
@@ -0,0 +1,61 @@
+// <file>
+//     <copyright see="prj:///doc/copyright.txt"/>
+//     <license see="prj:///doc/license.txt"/>
+//     <author name="Daniel Grunwald"/>
+//     <version>$Revision$</version>
+// </file>
+
+using System;
+using System.Collections.Generic;
+using ICSharpCode.NRefactory.Ast;
+
+namespace ICSharpCode.NRefactory.AstBuilder
+{
+	#if NET35
+	/// <summary>
+	/// Extension methods for NRefactory.Ast.Expression.
+	/// </summary>
+	public static class StatementBuilder
+	{
+		public static void AddStatement(this BlockStatement block, Statement statement)
+		{
+			if (block == null)
+				throw new ArgumentNullException("block");
+			if (statement == null)
+				throw new ArgumentNullException("statement");
+			block.AddChild(statement);
+			statement.Parent = block;
+		}
+		
+		public static void AddStatement(this BlockStatement block, Expression expressionStatement)
+		{
+			if (expressionStatement == null)
+				throw new ArgumentNullException("expressionStatement");
+			AddStatement(block, new ExpressionStatement(expressionStatement));
+		}
+		
+		public static void Throw(this BlockStatement block, Expression expression)
+		{
+			if (expression == null)
+				throw new ArgumentNullException("expression");
+			AddStatement(block, new ThrowStatement(expression));
+		}
+		
+		public static void Return(this BlockStatement block, Expression expression)
+		{
+			if (expression == null)
+				throw new ArgumentNullException("expression");
+			AddStatement(block, new ReturnStatement(expression));
+		}
+		
+		public static void Assign(this BlockStatement block, Expression left, Expression right)
+		{
+			if (left == null)
+				throw new ArgumentNullException("left");
+			if (right == null)
+				throw new ArgumentNullException("right");
+			AddStatement(block, new AssignmentExpression(left, AssignmentOperatorType.Assign, right));
+		}
+	}
+	#endif
+}
diff --git a/src/Main/Base/Test/CodeConverterTests.cs b/src/Main/Base/Test/CodeConverterTests.cs
index 42a13b6554..1e42ead7c3 100644
--- a/src/Main/Base/Test/CodeConverterTests.cs
+++ b/src/Main/Base/Test/CodeConverterTests.cs
@@ -517,6 +517,13 @@ namespace ICSharpCode.SharpDevelop.Tests
 			TestStatementsCS2VB("IDisposable ex = (IDisposable)obj;\n",
 			                    "Dim ex As IDisposable = DirectCast(obj, IDisposable)\n");
 		}
+		
+		[Test]
+		public void CastIntegerToChar()
+		{
+			TestStatementsCS2VB("char c = (char)42;",
+			                    "Dim c As Char = ChrW(42)");
+		}
 		#endregion
 		
 		#region MoveUsingOutOfNamespace
diff --git a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/CSharpToVBNetConvertVisitor.cs b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/CSharpToVBNetConvertVisitor.cs
index 97eb48bbd0..ae6bbbc289 100644
--- a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/CSharpToVBNetConvertVisitor.cs
+++ b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/CSharpToVBNetConvertVisitor.cs
@@ -9,6 +9,7 @@ using System;
 using System.Collections.Generic;
 using ICSharpCode.NRefactory;
 using ICSharpCode.NRefactory.Ast;
+using ICSharpCode.NRefactory.AstBuilder;
 using ICSharpCode.NRefactory.Visitors;
 using System.Runtime.InteropServices;
 
@@ -351,10 +352,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 		
 		Expression CreateExplicitConversionToString(Expression expr)
 		{
-			InvocationExpression ie = new InvocationExpression(
-				new MemberReferenceExpression(new IdentifierExpression("Convert"), "ToString"));
-			ie.Arguments.Add(expr);
-			return ie;
+			return new IdentifierExpression("Convert").Call("ToString", expr);
 		}
 		
 		public override object VisitIdentifierExpression(IdentifierExpression identifierExpression, object data)
@@ -411,11 +409,10 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				} else if (rr != null && rr.ResolvedType != null) {
 					IClass c = rr.ResolvedType.GetUnderlyingClass();
 					if (c != null && c.ClassType == ClassType.Delegate) {
-						InvocationExpression invocation = new InvocationExpression(
-							new MemberReferenceExpression(
-								new IdentifierExpression("Delegate"),
-								assignmentExpression.Op == AssignmentOperatorType.Add ? "Combine" : "Remove"));
-						invocation.Arguments.Add(assignmentExpression.Left);
+						InvocationExpression invocation =
+							new IdentifierExpression("Delegate").Call(
+								assignmentExpression.Op == AssignmentOperatorType.Add ? "Combine" : "Remove",
+								assignmentExpression.Left);
 						invocation.Arguments.Add(assignmentExpression.Right);
 						
 						assignmentExpression.Op = AssignmentOperatorType.Assign;
@@ -434,14 +431,22 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			if (resolver.CompilationUnit == null)
 				return null;
 			
-			// cast to value type is a conversion
-			if (castExpression.CastType == CastType.Cast) {
-				IReturnType rt = ResolveType(castExpression.CastTo);
-				if (rt != null) {
-					IClass c = rt.GetUnderlyingClass();
-					if (c != null && (c.ClassType == ClassType.Struct || c.ClassType == ClassType.Enum)) {
+			if (castExpression.CastType != CastType.TryCast) {
+				IReturnType targetType = ResolveType(castExpression.CastTo);
+				if (targetType != null) {
+					IClass targetClass = targetType.GetUnderlyingClass();
+					if (targetClass != null && (targetClass.ClassType == ClassType.Struct || targetClass.ClassType == ClassType.Enum)) {
+						// cast to value type is a conversion
 						castExpression.CastType = CastType.Conversion;
 					}
+					if (targetClass != null && targetClass.FullyQualifiedName == "System.Char") {
+						// C# cast to char is done using ChrW function
+						ResolveResult sourceRR = resolver.ResolveInternal(castExpression.Expression, ExpressionContext.Default);
+						IReturnType sourceType = sourceRR != null ? sourceRR.ResolvedType : null;
+						if (IsInteger(sourceType)) {
+							ReplaceCurrentNode(new IdentifierExpression("ChrW").Call(castExpression.Expression));
+						}
+					}
 				}
 			}
 			return null;
@@ -452,20 +457,14 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 			base.VisitUnaryOperatorExpression(unaryOperatorExpression, data);
 			switch (unaryOperatorExpression.Op) {
 				case UnaryOperatorType.Dereference:
-					ReplaceCurrentNode(new MemberReferenceExpression(unaryOperatorExpression.Expression, "Target") {
-					                   	StartLocation = unaryOperatorExpression.StartLocation,
-					                   	EndLocation = unaryOperatorExpression.EndLocation
-					                   });
+					ReplaceCurrentNode(unaryOperatorExpression.Expression.Member("Target"));
 					break;
 				case UnaryOperatorType.AddressOf:
 					ResolveResult rr = resolver.ResolveInternal(unaryOperatorExpression.Expression, ExpressionContext.Default);
 					if (rr != null && rr.ResolvedType != null) {
 						TypeReference targetType = Refactoring.CodeGenerator.ConvertType(rr.ResolvedType, CreateContext());
 						TypeReference pointerType = new TypeReference("Pointer", new List<TypeReference> { targetType });
-						ReplaceCurrentNode(new ObjectCreateExpression(pointerType, new List<Expression> { unaryOperatorExpression.Expression }) {
-						                   	StartLocation = unaryOperatorExpression.StartLocation,
-						                   	EndLocation = unaryOperatorExpression.EndLocation
-						                   });
+						ReplaceCurrentNode(pointerType.New(unaryOperatorExpression.Expression));
 					}
 					break;
 			}
diff --git a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/VBNetToCSharpConvertVisitor.cs b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/VBNetToCSharpConvertVisitor.cs
index 4c4b86de2f..465d5af1c6 100644
--- a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/VBNetToCSharpConvertVisitor.cs
+++ b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/VBNetToCSharpConvertVisitor.cs
@@ -9,6 +9,7 @@ using System;
 using System.Collections.Generic;
 using ICSharpCode.NRefactory;
 using ICSharpCode.NRefactory.Ast;
+using ICSharpCode.NRefactory.AstBuilder;
 using ICSharpCode.NRefactory.Visitors;
 
 namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
@@ -169,8 +170,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				// the VB compiler automatically adds the InitializeComponents() call to the
 				// default constructor, so the converter has to add the call when creating an explicit
 				// constructor
-				cd.Body.Children.Add(new ExpressionStatement(
-					new InvocationExpression(new IdentifierExpression("InitializeComponent"))));
+				cd.Body.AddStatement(new IdentifierExpression("InitializeComponent").Call());
 			}
 			return cd;
 		}
diff --git a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
index d48da2afdf..95cc86ee3a 100644
--- a/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
+++ b/src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/Refactoring/CodeGenerator.cs
@@ -10,6 +10,7 @@ using System.Collections.Generic;
 using System.Text;
 
 using ICSharpCode.NRefactory.Ast;
+using ICSharpCode.NRefactory.AstBuilder;
 using NR = ICSharpCode.NRefactory.Ast;
 
 namespace ICSharpCode.SharpDevelop.Dom.Refactoring
@@ -164,7 +165,7 @@ namespace ICSharpCode.SharpDevelop.Dom.Refactoring
 		public static BlockStatement CreateNotImplementedBlock()
 		{
 			BlockStatement b = new BlockStatement();
-			b.AddChild(new ThrowStatement(new ObjectCreateExpression(new TypeReference("NotImplementedException"), null)));
+			b.Throw(new TypeReference("NotImplementedException").New());
 			return b;
 		}
 		
@@ -358,14 +359,12 @@ namespace ICSharpCode.SharpDevelop.Dom.Refactoring
 			property.TypeReference = ConvertType(field.ReturnType, new ClassFinder(field));
 			if (createGetter) {
 				BlockStatement block = new BlockStatement();
-				block.AddChild(new ReturnStatement(new IdentifierExpression(field.Name)));
+				block.Return(new IdentifierExpression(field.Name));
 				property.GetRegion = new PropertyGetRegion(block, null);
 			}
 			if (createSetter) {
 				BlockStatement block = new BlockStatement();
-				Expression left = new IdentifierExpression(field.Name);
-				Expression right = new IdentifierExpression("value");
-				block.AddChild(new ExpressionStatement(new AssignmentExpression(left, AssignmentOperatorType.Assign, right)));
+				block.Assign(new IdentifierExpression(field.Name), new IdentifierExpression("value"));
 				property.SetRegion = new PropertySetRegion(block, null);
 			}
 			
@@ -391,7 +390,7 @@ namespace ICSharpCode.SharpDevelop.Dom.Refactoring
 				arguments.Add(new PrimitiveExpression(null, "null"));
 			else
 				arguments.Add(new ThisReferenceExpression());
-			arguments.Add(new MemberReferenceExpression(new IdentifierExpression("EventArgs"), "Empty"));
+			arguments.Add(new IdentifierExpression("EventArgs").Member("Empty"));
 			InsertCodeAtEnd(property.SetterRegion, document,
 			                new RaiseEventStatement(name, arguments));
 		}
@@ -620,18 +619,14 @@ namespace ICSharpCode.SharpDevelop.Dom.Refactoring
 				}
 				PropertyDeclaration property = node as PropertyDeclaration;
 				if (property != null) {
-					Expression field = new MemberReferenceExpression(new BaseReferenceExpression(),
-					                                                 property.Name);
+					Expression field = new BaseReferenceExpression().Member(property.Name);
 					if (!property.GetRegion.Block.IsNull) {
 						property.GetRegion.Block.Children.Clear();
-						property.GetRegion.Block.AddChild(new ReturnStatement(field));
+						property.GetRegion.Block.Return(field);
 					}
 					if (!property.SetRegion.Block.IsNull) {
 						property.SetRegion.Block.Children.Clear();
-						Expression expr = new AssignmentExpression(field,
-						                                           AssignmentOperatorType.Assign,
-						                                           new IdentifierExpression("value"));
-						property.SetRegion.Block.AddChild(new ExpressionStatement(expr));
+						property.SetRegion.Block.Assign(field, new IdentifierExpression("value"));
 					}
 				}
 			}