Fix SD-1692 - Code Competion shows instance members twice

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/CtrlSpaceResolveHelper.cs

@@ -47,31 +47,23 @@ namespace ICSharpCode.SharpDevelop.Dom
 			if (callingClass != null) {
 				AddTypeParametersForCtrlSpace(result, callingClass.TypeParameters);
 				
+				
 				List<ICompletionEntry> members = new List<ICompletionEntry>();
 				IReturnType t = callingClass.DefaultReturnType;
-				members.AddRange(t.GetMethods());
-				members.AddRange(t.GetFields());
-				members.AddRange(t.GetEvents());
-				members.AddRange(t.GetProperties());
-				foreach (IMember m in members) {
-					if ((!inStatic || m.IsStatic) && m.IsAccessible(callingClass, true)) {
+				var language = callingClass.ProjectContent.Language;
+				foreach (IMember m in MemberLookupHelper.GetAccessibleMembers(t, callingClass, language, true)) {
+					if ((!inStatic || m.IsStatic) && language.ShowMember(m, m.IsStatic))
 						result.Add(m);
-					}
 				}
 				members.Clear();
 				IClass c = callingClass.DeclaringType;
 				while (c != null) {
 					t = c.DefaultReturnType;
-					members.AddRange(t.GetMethods());
-					members.AddRange(t.GetFields());
-					members.AddRange(t.GetEvents());
-					members.AddRange(t.GetProperties());
-					c = c.DeclaringType;
-				}
-				foreach (IMember m in members) {
-					if (m.IsStatic) {
-						result.Add(m);
+					foreach (IMember m in MemberLookupHelper.GetAccessibleMembers(t, c, language, true)) {
+						if (language.ShowMember(m, true))
+							result.Add(m);
 					}
+					c = c.DeclaringType;
 				}
 			}
 		}