From e1c41702566b852b05b28a9c73df910d556c495f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=93=9D=E7=82=B9lilac?= <yourena0528@gmail.com>
Date: Wed, 30 Dec 2020 14:32:22 +0800
Subject: [PATCH] =?UTF-8?q?=E6=A0=B9=E6=8D=AE=E6=89=A9=E5=B1=95=E5=90=8D?=
 =?UTF-8?q?=E8=8E=B7=E5=8F=96=E6=89=93=E5=BC=80=E6=96=B9=E5=BC=8F?=
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---
 .../BulePointLilac.Methods/FileExtension.cs     | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 ContextMenuManager/BulePointLilac.Methods/FileExtension.cs

diff --git a/ContextMenuManager/BulePointLilac.Methods/FileExtension.cs b/ContextMenuManager/BulePointLilac.Methods/FileExtension.cs
new file mode 100644
index 0000000..6a19279
--- /dev/null
+++ b/ContextMenuManager/BulePointLilac.Methods/FileExtension.cs
@@ -0,0 +1,17 @@
+using Microsoft.Win32;
+
+namespace BulePointLilac.Methods
+{
+    public static class FileExtension
+    {
+        public const string FileExtsPath = @"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts";
+
+        public static string GetOpenMode(string extension)
+        {
+            string mode = Registry.GetValue($@"{FileExtsPath}\{extension}\UserChoice", "ProgId", null)?.ToString();
+            if(mode != null) return mode;
+            mode = Registry.GetValue($@"HKEY_CLASSES_ROOT\{extension}", "", null)?.ToString();
+            return mode;
+        }
+    }
+}
\ No newline at end of file