From b28e7c38a32f2c0fc40821698f87f57252dd4d5a Mon Sep 17 00:00:00 2001
From: lukamicoder <lukamicoder@gmail.com>
Date: Thu, 4 Jun 2015 14:51:57 -0700
Subject: [PATCH] Pages are only fetched if they are not cached.

---
 src/MoonPdfLib/Virtualizing/VirtualizingCollection.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/MoonPdfLib/Virtualizing/VirtualizingCollection.cs b/src/MoonPdfLib/Virtualizing/VirtualizingCollection.cs
index 90b628b..b4cfe80 100644
--- a/src/MoonPdfLib/Virtualizing/VirtualizingCollection.cs
+++ b/src/MoonPdfLib/Virtualizing/VirtualizingCollection.cs
@@ -155,6 +155,10 @@ public T this[int index]
 				// determine which page and offset within page
 				int pageIndex = index / PageSize;
 				int pageOffset = index % PageSize;
+				
+				if (_pages.ContainsKey(pageIndex) && _pages[pageIndex] != null && _pages[pageIndex][pageOffset] != null) {
+					return _pages[pageIndex][pageOffset];
+				}
 
 				// request primary page
 				RequestPage(pageIndex);