From 09257b0c6dd17130b5d7c6e9f31726328e9bb368 Mon Sep 17 00:00:00 2001
From: Huo Yaoyuan <huoyaoyuan@hotmail.com>
Date: Thu, 28 Nov 2019 22:07:46 +0800
Subject: [PATCH] CA1820: use IsNullOrEmpty.

---
 CodeAnalysis/osu.ruleset           | 1 -
 osu.Game/Overlays/DirectOverlay.cs | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/CodeAnalysis/osu.ruleset b/CodeAnalysis/osu.ruleset
index 2f072ffa45..5329e84024 100644
--- a/CodeAnalysis/osu.ruleset
+++ b/CodeAnalysis/osu.ruleset
@@ -48,7 +48,6 @@
     <Rule Id="CA1307" Action="None" />
     <Rule Id="CA1308" Action="None" />
     <Rule Id="CA1816" Action="None" />
-    <Rule Id="CA1820" Action="None" />
     <Rule Id="CA1826" Action="None" />
     <Rule Id="CA2000" Action="None" />
     <Rule Id="CA2008" Action="None" />
diff --git a/osu.Game/Overlays/DirectOverlay.cs b/osu.Game/Overlays/DirectOverlay.cs
index aedbd1b08b..9daf55c796 100644
--- a/osu.Game/Overlays/DirectOverlay.cs
+++ b/osu.Game/Overlays/DirectOverlay.cs
@@ -116,7 +116,7 @@ public DirectOverlay()
 
             Filter.Search.Current.ValueChanged += text =>
             {
-                if (text.NewValue != string.Empty)
+                if (!string.IsNullOrEmpty(text.NewValue))
                 {
                     Header.Tabs.Current.Value = DirectTab.Search;