add Rate

HandyControlDemo/Tools/CommonHelper.cs

@@ -0,0 +1,25 @@
+using System.Linq;
+using System.Management;
+using HandyControl.Data;
+
+namespace HandyControlDemo.Tools
+{
+    public class CommonHelper
+    {
+        public static SystemVersionInfo GetSystemVersionInfo()
+        {
+            var managementClass = new ManagementClass("Win32_OperatingSystem");
+            var instances = managementClass.GetInstances();
+            foreach (var instance in instances)
+            {
+                if (instance["Version"] is string version)
+                {
+                    var nums = version.Split('.').Select(int.Parse).ToList();
+                    var info = new SystemVersionInfo(nums[0], nums[1], nums[2]);
+                    return info;
+                }
+            }
+            return default(SystemVersionInfo);
+        }
+    }
+}