diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/ArrayIndexerExpression.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/ArrayIndexerExpression.cs
index 82fa8c413f..46a6d802b7 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/ArrayIndexerExpression.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/ArrayIndexerExpression.cs
@@ -18,6 +18,7 @@ namespace Debugger.Expressions
 	{
 		Expression targetObject;
 		Expression[] arguments;
+		string name;
 		
 		public Expression TargetObject {
 			get { return targetObject; }
@@ -39,6 +40,7 @@ namespace Debugger.Expressions
 				indicesAst.Add(new PrimitiveExpression(indice));
 			}
 			this.arguments = indicesAst.ToArray();
+			this.name = GetName();
 		}
 		
 		public ArrayIndexerExpression(Expression targetObject, Expression[] arguments)
@@ -48,6 +50,24 @@ namespace Debugger.Expressions
 			
 			this.targetObject = targetObject;
 			this.arguments = arguments;
+			this.name = GetName();
+		}
+		
+		string GetName()
+		{
+			StringBuilder sb = new StringBuilder();
+			sb.Append("[");
+			bool isFirst = true;
+			foreach(Expression argument in arguments) {
+				if (isFirst) {
+					isFirst = false;
+				} else {
+					sb.Append(", ");
+				}
+				sb.Append(argument.Code);
+			}
+			sb.Append("]");
+			return sb.ToString();
 		}
 		
 		public override string Code {
@@ -58,19 +78,7 @@ namespace Debugger.Expressions
 		
 		public override string CodeTail {
 			get {
-				StringBuilder sb = new StringBuilder();
-				sb.Append("[");
-				bool isFirst = true;
-				foreach(Expression argument in arguments) {
-					if (isFirst) {
-						isFirst = false;
-					} else {
-						sb.Append(", ");
-					}
-					sb.Append(argument.Code);
-				}
-				sb.Append("]");
-				return sb.ToString();
+				return name;
 			}
 		}
 		
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/LocalVariableIdentifierExpression.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/LocalVariableIdentifierExpression.cs
index 17769acb6b..fe80973234 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/LocalVariableIdentifierExpression.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/LocalVariableIdentifierExpression.cs
@@ -20,6 +20,7 @@ namespace Debugger.Expressions
 	{
 		MethodInfo method;
 		ISymUnmanagedVariable symVar;
+		string name;
 		
 		public MethodInfo Method {
 			get { return method; }
@@ -36,11 +37,12 @@ namespace Debugger.Expressions
 			
 			this.method = method;
 			this.symVar = symVar;
+			this.name = symVar.Name;
 		}
 		
 		public override string Code {
 			get {
-				return symVar.Name;
+				return name;
 			}
 		}
 		
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/MemberReferenceExpression.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/MemberReferenceExpression.cs
index c637423939..dc81d38a8d 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/MemberReferenceExpression.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Ast/MemberReferenceExpression.cs
@@ -22,6 +22,7 @@ namespace Debugger.Expressions
 		Expression targetObject;
 		MemberInfo memberInfo;
 		Expression[] arguments;
+		string name;
 		
 		public Expression TargetObject {
 			get { return targetObject; }
@@ -42,6 +43,7 @@ namespace Debugger.Expressions
 			this.targetObject = targetObject;
 			this.memberInfo = memberInfo;
 			this.arguments = arguments ?? new Expression[0];
+			this.name = GetName();
 		}
 		
 		public override string Code {
@@ -53,38 +55,43 @@ namespace Debugger.Expressions
 					sb.Append(targetObject.Code);
 				}
 				sb.Append(".");
-				sb.Append(this.CodeTail);
+				sb.Append(name);
 				return sb.ToString();
 			}
 		}
 		
 		public override string CodeTail {
 			get {
-				StringBuilder sb = new StringBuilder();
-				sb.Append(memberInfo.Name);
-				if (arguments.Length > 0) {
-					if (memberInfo is PropertyInfo) {
-						sb.Append("[");
-					} else {
-						sb.Append("(");
-					}
-					bool isFirst = true;
-					foreach(Expression argument in arguments) {
-						if (isFirst) {
-							isFirst = false;
-						} else {
-							sb.Append(", ");
-						}
-						sb.Append(argument.Code);
-					}
-					if (memberInfo is PropertyInfo) {
-						sb.Append("]");
+				return name;
+			}
+		}
+		
+		string GetName()
+		{
+			StringBuilder sb = new StringBuilder();
+			sb.Append(memberInfo.Name);
+			if (arguments.Length > 0) {
+				if (memberInfo is PropertyInfo) {
+					sb.Append("[");
+				} else {
+					sb.Append("(");
+				}
+				bool isFirst = true;
+				foreach(Expression argument in arguments) {
+					if (isFirst) {
+						isFirst = false;
 					} else {
-						sb.Append(")");
+						sb.Append(", ");
 					}
+					sb.Append(argument.Code);
+				}
+				if (memberInfo is PropertyInfo) {
+					sb.Append("]");
+				} else {
+					sb.Append(")");
 				}
-				return sb.ToString();
 			}
+			return sb.ToString();
 		}
 		
 		protected override Value EvaluateInternal(StackFrame context)
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.Create.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.Create.cs
index 0905e491d4..c9179075dd 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.Create.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.Create.cs
@@ -55,6 +55,7 @@ namespace Debugger.Expressions
 				members.Add(this.AppendPropertyReference(property));
 			}
 			
+			members.Sort();
 			return members.ToArray();
 		}
 		
@@ -87,6 +88,7 @@ namespace Debugger.Expressions
 				pars.Add(new ParameterIdentifierExpression(methodInfo, i));
 			}
 			
+			pars.Sort();
 			return pars.ToArray();
 		}
 		
@@ -99,6 +101,7 @@ namespace Debugger.Expressions
 				vars.Add(new LocalVariableIdentifierExpression(methodInfo, var));
 			}
 			
+			vars.Sort();
 			return vars.ToArray();
 		}
 	}
diff --git a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.cs b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.cs
index 70969cb63d..1c248c8d4b 100644
--- a/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.cs
+++ b/src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Expressions/Expression.cs
@@ -14,7 +14,7 @@ namespace Debugger.Expressions
 	/// Represents a piece of code that can be evaluated.
 	/// For example "a[15] + 15".
 	/// </summary>
-	public abstract partial class Expression: DebuggerObject
+	public abstract partial class Expression: DebuggerObject, IComparable<Expression>
 	{
 		static Dictionary<Expression, Value> expressionCache;
 		static DebuggeeState expressionCache_debuggerState;
@@ -31,6 +31,11 @@ namespace Debugger.Expressions
 			}
 		}
 		
+		public int CompareTo(Expression other)
+		{
+			return this.CodeTail.CompareTo(other.CodeTail);
+		}
+		
 		public override string ToString()
 		{
 			return this.Code;