From b63d1065d3d7694f8cdc40d689ad5e756026d145 Mon Sep 17 00:00:00 2001
From: maurok <maurok@gmail.com>
Date: Fri, 19 May 2017 15:41:40 -0300
Subject: [PATCH] # Adding support for array types within actions

---
 .../LuisActionResolver.cs                     | 35 ++++++++++++++++++-
 1 file changed, 34 insertions(+), 1 deletion(-)

diff --git a/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs b/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
index b037d46eaf..b998a5494e 100644
--- a/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
+++ b/CSharp/Blog-LUISActionBinding/Microsoft.Cognitive.LUIS.ActionBinding/LuisActionResolver.cs
@@ -348,7 +348,11 @@ private static bool AssignValue(ILuisAction action, PropertyInfo property, objec
 
                 try
                 {
-                    if (type.IsEnum)
+                    if (type.IsArray)
+                    {
+                        property.SetValue(action, BuildArrayOfValues(action, property, type.GetElementType(), paramValue));
+                    }
+                    else if (type.IsEnum)
                     {
                         property.SetValue(action, Enum.Parse(type, (string)paramValue));
                     }
@@ -369,6 +373,35 @@ private static bool AssignValue(ILuisAction action, PropertyInfo property, objec
             return false;
         }
 
+        private static Array BuildArrayOfValues(ILuisAction action, PropertyInfo property, Type elementType, object paramValue)
+        {
+            var values = default(IEnumerable<object>);
+            if (paramValue is IEnumerable<object>)
+            {
+                values = paramValue as IEnumerable<object>;
+            }
+            else
+            {
+                values = paramValue.ToString().Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries).Select(v => v.Trim());
+            }
+
+            if (values.Count() > 0)
+            {
+                var idx = 0;
+                var result = Array.CreateInstance(elementType, values.Count());
+                foreach (var value in values)
+                {
+                    result.SetValue(elementType.IsEnum ? Enum.Parse(elementType, (string)value) : Convert.ChangeType(value, elementType), idx++);
+                }
+
+                return result;
+            }
+            else
+            {
+                return null;
+            }
+        }
+
         private static bool AssignEntitiesToMembers(
             ILuisAction action, 
             IEnumerable<PropertyInfo> properties,