From ca2e2899ead3cfadeba8689cb2d9b55048420e02 Mon Sep 17 00:00:00 2001
From: Bryan Sanchez <Zidame2@hotmail.com>
Date: Tue, 13 Jun 2017 14:49:36 -0500
Subject: [PATCH 1/3] Added InsertRange

Insert a collection in the specified index keeping the order of the specified collection
---
 MvvmHelpers/ObservableRangeCollection.cs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/MvvmHelpers/ObservableRangeCollection.cs b/MvvmHelpers/ObservableRangeCollection.cs
index 7fbd31b..2f1edc3 100644
--- a/MvvmHelpers/ObservableRangeCollection.cs
+++ b/MvvmHelpers/ObservableRangeCollection.cs
@@ -103,6 +103,29 @@ public void RemoveRange(IEnumerable<T> collection, NotifyCollectionChangedAction
             OnPropertyChanged(new PropertyChangedEventArgs("Item[]"));
             OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Remove, changedItems, -1));
         }
+        
+        /// <summary> 
+        /// Insert a collection in the specified index keeping the order of the specified collection
+        /// </summary> 
+        public void InsertRange(int index, IEnumerable<T> collection)
+        {
+            if (collection == null)
+                throw new ArgumentNullException(nameof(collection));
+
+            CheckReentrancy();
+
+            // Reverse items to insert from last to start
+            foreach (T item in collection.Reverse())
+            {
+                Items.Insert(index, item);
+            }
+
+            OnPropertyChanged(new PropertyChangedEventArgs("Count"));
+            OnPropertyChanged(new PropertyChangedEventArgs("Item[]"));
+
+            // Casted collection to IList to use the overload that take an IList and have a better NotifyCollectionChangedEventArgs to use
+            OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Add, (IList)collection, index));
+        }
 
         /// <summary> 
         /// Clears the current collection and replaces it with the specified item. 

From 55ca84aebfebcd29447f460ea32f49629103c0ce Mon Sep 17 00:00:00 2001
From: Bryan Sanchez <Zidame2@hotmail.com>
Date: Tue, 13 Jun 2017 14:53:30 -0500
Subject: [PATCH 2/3] Create ObservableRangeCollection.cs

---
 MvvmHelpers/ObservableRangeCollection.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/MvvmHelpers/ObservableRangeCollection.cs b/MvvmHelpers/ObservableRangeCollection.cs
index 2f1edc3..eaf8a3d 100644
--- a/MvvmHelpers/ObservableRangeCollection.cs
+++ b/MvvmHelpers/ObservableRangeCollection.cs
@@ -112,6 +112,9 @@ public void InsertRange(int index, IEnumerable<T> collection)
             if (collection == null)
                 throw new ArgumentNullException(nameof(collection));
 
+            if (collection.Count() == 0)
+                return;
+                    
             CheckReentrancy();
 
             // Reverse items to insert from last to start

From 9bfc0b0dbff64520a8eb4d0f83ea428c18e4fccd Mon Sep 17 00:00:00 2001
From: Bryan Sanchez <Zidame2@hotmail.com>
Date: Tue, 13 Jun 2017 14:56:00 -0500
Subject: [PATCH 3/3] Missing namespace

---
 MvvmHelpers/ObservableRangeCollection.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MvvmHelpers/ObservableRangeCollection.cs b/MvvmHelpers/ObservableRangeCollection.cs
index eaf8a3d..3d68b6c 100644
--- a/MvvmHelpers/ObservableRangeCollection.cs
+++ b/MvvmHelpers/ObservableRangeCollection.cs
@@ -3,6 +3,7 @@
 using System.Collections.ObjectModel;
 using System.Collections.Specialized;
 using System.ComponentModel;
+using System.Linq;
 
 
 namespace MvvmHelpers