From a4c0e0a59c7c2674533d6c1429bb8225a263c0b3 Mon Sep 17 00:00:00 2001
From: bao-qian <bao.github@outlook.com>
Date: Fri, 6 May 2016 00:00:15 +0100
Subject: [PATCH] Fix select result when there is no results

part of #412
---
 Wox/ViewModel/ResultsViewModel.cs | 38 +++++++++++++++----------------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/Wox/ViewModel/ResultsViewModel.cs b/Wox/ViewModel/ResultsViewModel.cs
index 975ce52971..bb258141f6 100644
--- a/Wox/ViewModel/ResultsViewModel.cs
+++ b/Wox/ViewModel/ResultsViewModel.cs
@@ -118,7 +118,7 @@ namespace Wox.ViewModel
 
         public void SelectNextResult()
         {
-            if (SelectedResult != null)
+            if (Results.Count > 0 && SelectedResult != null)
             {
                 var index = Results.IndexOf(SelectedResult);
                 if (index == Results.Count - 1)
@@ -131,7 +131,7 @@ namespace Wox.ViewModel
 
         public void SelectPrevResult()
         {
-            if (SelectedResult != null)
+            if (Results.Count > 0 && SelectedResult != null)
             {
                 var index = Results.IndexOf(SelectedResult);
                 if (index == 0)
@@ -144,32 +144,30 @@ namespace Wox.ViewModel
 
         public void SelectNextPage()
         {
-            var index = 0;
-            if (SelectedResult != null)
+            if (Results.Count > 0 && SelectedResult != null)
             {
-                index = Results.IndexOf(SelectedResult);
+                var index = Results.IndexOf(SelectedResult);
+                index += 5;
+                if (index > Results.Count - 1)
+                {
+                    index = Results.Count - 1;
+                }
+                SelectedResult = Results.ElementAt(index);
             }
-            index += 5;
-            if (index > Results.Count - 1)
-            {
-                index = Results.Count - 1;
-            }
-            SelectedResult = Results.ElementAt(index);
         }
 
         public void SelectPrevPage()
         {
-            var index = 0;
-            if (SelectedResult != null)
+            if (Results.Count > 0 && SelectedResult != null)
             {
-                index = Results.IndexOf(SelectedResult);
+                var index = Results.IndexOf(SelectedResult);
+                index -= 5;
+                if (index < 0)
+                {
+                    index = 0;
+                }
+                SelectedResult = Results.ElementAt(index);
             }
-            index -= 5;
-            if (index < 0)
-            {
-                index = 0;
-            }
-            SelectedResult = Results.ElementAt(index);
         }
 
         public void Clear()