From 20602d2dd8fc69ec4e277aaa9ab2be2b84b7db91 Mon Sep 17 00:00:00 2001
From: Jaex <Jaex@users.noreply.github.com>
Date: Sun, 6 Oct 2019 13:41:50 +0300
Subject: [PATCH] Respect panel selection order when using shift select

---
 ShareX.HelpersLib/Extensions/Extensions.cs | 20 ++++++++++++++------
 ShareX/Controls/TaskThumbnailView.cs       |  4 ++--
 2 files changed, 16 insertions(+), 8 deletions(-)

diff --git a/ShareX.HelpersLib/Extensions/Extensions.cs b/ShareX.HelpersLib/Extensions/Extensions.cs
index fdecf183e..2b964a159 100644
--- a/ShareX.HelpersLib/Extensions/Extensions.cs
+++ b/ShareX.HelpersLib/Extensions/Extensions.cs
@@ -758,16 +758,24 @@ public static void SupportDarkTheme(this ListView lv)
 
         public static List<T> Range<T>(this List<T> source, int start, int end)
         {
+            List<T> list = new List<T>();
+
             if (start > end)
             {
-                int temp = start;
-                start = end;
-                end = temp;
+                for (int i = start; i >= end; i--)
+                {
+                    list.Add(source[i]);
+                }
+            }
+            else
+            {
+                for (int i = start; i <= end; i++)
+                {
+                    list.Add(source[i]);
+                }
             }
 
-            int length = end - start + 1;
-
-            return source.GetRange(start, length);
+            return list;
         }
 
         public static List<T> Range<T>(this List<T> source, T start, T end)
diff --git a/ShareX/Controls/TaskThumbnailView.cs b/ShareX/Controls/TaskThumbnailView.cs
index cfc82f0d8..3005bf024 100644
--- a/ShareX/Controls/TaskThumbnailView.cs
+++ b/ShareX/Controls/TaskThumbnailView.cs
@@ -268,11 +268,11 @@ private void Panel_MouseUp(object sender, MouseEventArgs e, TaskThumbnailPanel p
                 {
                     if (SelectedPanels.Count > 0)
                     {
-                        TaskThumbnailPanel lastPanel = SelectedPanels[SelectedPanels.Count - 1];
+                        TaskThumbnailPanel firstPanel = SelectedPanels[0];
 
                         UnselectAllPanels();
 
-                        foreach (TaskThumbnailPanel p in Panels.Range(panel, lastPanel))
+                        foreach (TaskThumbnailPanel p in Panels.Range(firstPanel, panel))
                         {
                             p.Selected = true;
                             SelectedPanels.Add(p);