新增设置Windows系统时间相关方法

Falcon.SugarApi/WindowsSystem/README.md

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+封装一些Windows操作系统相关操作

Falcon.SugarApi/WindowsSystem/WindowsSystemTime.cs

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+using System;
+using System.Runtime.InteropServices;
+
+namespace Falcon.SugarApi.WindowsSystem
+{
+    /// <summary>
+    /// Windows系统时间
+    /// </summary>
+    public static class WindowsSystemTime
+    {
+        [StructLayout(LayoutKind.Sequential)]
+        private struct Systemtime
+        {
+            public short year;
+            public short month;
+            public short dayOfWeek;
+            public short day;
+            public short hour;
+            public short minute;
+            public short second;
+            public short milliseconds;
+        }
+
+        [DllImport("kernel32.dll")]
+        private static extern bool SetLocalTime(ref Systemtime time);
+
+        /// <summary>
+        /// 设置Windows系统时间。应用程序必须以管理员身份运行，否则无法设置
+        /// </summary>
+        /// <param name="dt">需要设置的时间</param>
+        /// <returns>返回系统时间设置状态，true为成功，false为失败</returns>
+        public static bool SetLocalDateTime(DateTime dt) {
+            Systemtime st;
+            st.year = (short)dt.Year;
+            st.month = (short)dt.Month;
+            st.dayOfWeek = (short)dt.DayOfWeek;
+            st.day = (short)dt.Day;
+            st.hour = (short)dt.Hour;
+            st.minute = (short)dt.Minute;
+            st.second = (short)dt.Second;
+            st.milliseconds = (short)dt.Millisecond;
+            bool rt = SetLocalTime(ref st);
+            return rt;
+        }
+    }
+}