diff --git a/MainWindow.xaml b/MainWindow.xaml
index 1e47016..cc20df3 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -5,12 +5,10 @@
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:SUNLIGHT_CDKEY"
         mc:Ignorable="d"
-<<<<<<< HEAD
-<<<<<<< HEAD
         Title="MainWindow" Height="400" Width="600">
     <Grid>
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="20,10,0,0" TextWrapping="Wrap" Text="SN:" VerticalAlignment="Top" Width="170" FontSize="24"/>
-        <TextBox x:Name="sn_id" HorizontalAlignment="Left" Height="40" Margin="170,10,0,0" VerticalAlignment="Top" Width="340" Focusable="False" FontSize="24"/>
+        <TextBox x:Name="sn_id" HorizontalAlignment="Left" Height="40" Margin="170,10,0,0" VerticalAlignment="Top" Width="340" FontSize="24"/>
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="20,55,0,0" TextWrapping="Wrap" Text="DURATION:" VerticalAlignment="Top" Width="170" FontSize="24"/>
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="400,55,0,0" TextWrapping="Wrap" Text="MONTHS" VerticalAlignment="Top" Width="170" FontSize="24"/>
         <ComboBox x:Name="DURATION"  HorizontalAlignment="Left" Height="40" Margin="170,55,0,0" VerticalAlignment="Top" Width="220"  DropDownClosed="DURATION_DropDownClosed" FontSize="24">
@@ -23,25 +21,17 @@
             <ComboBoxItem Content="FOREVER"></ComboBoxItem>
         </ComboBox>
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="20,100,0,0" TextWrapping="Wrap" Text="TIME:" VerticalAlignment="Top" Width="88" FontSize="24"/>
-        <TextBox x:Name="T_Y" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,100,0,0" VerticalAlignment="Top" Width="220" FontSize="24"/>
+        <TextBox x:Name="T_Y" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,100,0,0" VerticalAlignment="Top" Width="220" FontSize="24" InputMethod.IsInputMethodEnabled="False" PreviewTextInput="Tb_KeyFloating_Y" />
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="400,100,0,0" TextWrapping="Wrap" Text="YEAR" VerticalAlignment="Top" Width="170" FontSize="24"/>
-        <TextBox x:Name="T_M" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,145,0,0" VerticalAlignment="Top" Width="220" FontSize="24"/>
+        <TextBox x:Name="T_M" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,145,0,0" VerticalAlignment="Top" Width="220" FontSize="24" InputMethod.IsInputMethodEnabled="False" PreviewTextInput="Tb_KeyFloating_M" />
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="400,145,0,0" TextWrapping="Wrap" Text="MONTHS" VerticalAlignment="Top" Width="170" FontSize="24"/>
-        <TextBox x:Name="T_D" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,190,0,0" VerticalAlignment="Top" Width="220" FontSize="24"/>
+        <TextBox x:Name="T_D" Text="0" HorizontalAlignment="Left" Height="40" Margin="170,190,0,0" VerticalAlignment="Top" Width="220" FontSize="24" InputMethod.IsInputMethodEnabled="False" PreviewTextInput="Tb_KeyFloating_D" />
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="400,190,0,0" TextWrapping="Wrap" Text="DAY" VerticalAlignment="Top" Width="170" FontSize="24"/>
         <TextBlock HorizontalAlignment="Left" Height="40" Margin="20,235,0,0" TextWrapping="Wrap" Text="CDKEY:" VerticalAlignment="Top" Width="88" FontSize="24"/>
         <TextBox x:Name="cdk" HorizontalAlignment="Left" Height="40" Margin="170,235,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="342" FontSize="24"/>
         <Button Content="OK" HorizontalAlignment="Left" Height="40" Margin="170,280,0,0" VerticalAlignment="Top" Width="85" Background="#FFE6E6E6" Click="Button_Click"/>
 
-=======
-        Title="MainWindow" Height="450" Width="800">
-    <Grid>
-        
->>>>>>> 768827d5435e8f9e34d3db0c7dbb91737195a206
-=======
-        Title="MainWindow" Height="450" Width="800">
-    <Grid>
-        
->>>>>>> 768827d5435e8f9e34d3db0c7dbb91737195a206
     </Grid>
+        
+
 </Window>
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index a9a1f50..5c0db40 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
@@ -11,6 +12,7 @@ using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
+using SUNLIGHT_CDKEY.UserClass;
 
 namespace SUNLIGHT_CDKEY
 {
@@ -19,51 +21,98 @@ namespace SUNLIGHT_CDKEY
     /// </summary>
     public partial class MainWindow : Window
     {
+        int d, y, m;
+
         public MainWindow()
         {
             InitializeComponent();
+            T_Y.Text = DateTime.Now.ToString("yyyy");
+            T_M.Text = DateTime.Now.ToString("MM");
+            T_D.Text = DateTime.Now.ToString("dd");
+        }
+
+        private void Tb_KeyFloating_D(object sender, TextCompositionEventArgs e)//输入事件
+        {
+            d = int.Parse(T_D.Text);
+            //Regex re = new Regex("[^0-9.-]+");
+            Regex re = new Regex(@"^[.][0-9]+$|^[0-9]*[.]{0,1}[0-9]*$");// 非负浮点数
+            e.Handled = !re.IsMatch(e.Text);
+            if(d>30)T_D.Text = "30";
+        }
+
+        private void Tb_KeyFloating_Y(object sender, TextCompositionEventArgs e)//输入事件
+        {
+            y = int.Parse(T_Y.Text);
+            //Regex re = new Regex("[^0-9.-]+");
+            Regex re = new Regex(@"^[.][0-9]+$|^[0-9]*[.]{0,1}[0-9]*$");// 非负浮点数
+            e.Handled = !re.IsMatch(e.Text);
+            if (y > 2099) T_Y.Text = "2099";
+        }
+
+        private void Tb_KeyFloating_M(object sender, TextCompositionEventArgs e)//输入事件
+        {
+            m = int.Parse(T_M.Text);
+            //Regex re = new Regex("[^0-9.-]+");
+            Regex re = new Regex(@"^[.][0-9]+$|^[0-9]*[.]{0,1}[0-9]*$");// 非负浮点数
+            e.Handled = !re.IsMatch(e.Text);
+            if (m > 12) T_M.Text = "12";
         }
-<<<<<<< HEAD
-<<<<<<< HEAD
 
         private void DURATION_DropDownClosed(object sender, EventArgs e)
         {
-            T_M.Text = "0";
-            T_Y.Text = "0";
-            T_D.Text = "0";
+            T_Y.Text = DateTime.Now.ToString("yyyy");
+            T_M.Text = DateTime.Now.ToString("MM");
+            T_D.Text = DateTime.Now.ToString("dd");
+
+            d = int.Parse(T_D.Text);
+            y = int.Parse(T_Y.Text);
+            m = int.Parse(T_M.Text);
+
             if (DURATION.Text == "1")
             {
-                T_M.Text = "1";
+                m += 1;
             }
             else if (DURATION.Text == "2") 
             {
-                T_M.Text = "2";
+                m += 2; 
             }
             else if (DURATION.Text == "3") 
             {
-                T_M.Text = "3";
+                m += 3;
             }
             else if (DURATION.Text == "6") 
             {
-                T_M.Text = "6";
+                m += 6;
             }
             else if (DURATION.Text == "12") 
             {
-                T_Y.Text = "1";
+                y += 1;
             }
             else if (DURATION.Text == "FOREVER") 
             {
-                T_Y.Text = "99";
+                y = 2099;
+            }
+            if (m > 12)
+            {
+                m = m-12;
+                y += 1;
             }
+
+            T_Y.Text=y.ToString();
+            T_M.Text=m.ToString();
+            T_D.Text=d.ToString();
         }
 
         private void Button_Click(object sender, RoutedEventArgs e)
         {
+            string a,b;
+
+            a = sn_id.Text.Substring(0, 6);
 
+            b = (255-y).ToString()+ (255 - m).ToString()+(255 - d).ToString();
+
+            cdk.Text = a + b + CRCcheck16.ToCRC16(CRCcheck16.StringToHexByte(b), true);
         }
-=======
->>>>>>> 768827d5435e8f9e34d3db0c7dbb91737195a206
-=======
->>>>>>> 768827d5435e8f9e34d3db0c7dbb91737195a206
+
     }
 }
diff --git a/SUNLIGHT_CDKEY.csproj b/SUNLIGHT_CDKEY.csproj
index 819a3c1..8322ff6 100644
--- a/SUNLIGHT_CDKEY.csproj
+++ b/SUNLIGHT_CDKEY.csproj
@@ -66,6 +66,7 @@
     <Compile Include="Properties\AssemblyInfo.cs">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="UserClass\CRCcheck16.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
       <AutoGen>True</AutoGen>
       <DesignTime>True</DesignTime>
diff --git a/UserClass/CRCcheck16.cs b/UserClass/CRCcheck16.cs
new file mode 100644
index 0000000..bbe611a
--- /dev/null
+++ b/UserClass/CRCcheck16.cs
@@ -0,0 +1,193 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+//using System.Threading.Tasks;
+
+namespace formula_manage.UserClass
+{
+    /// <summary>
+    /// CRC校验
+    /// </summary>
+    public class CRCcheck16
+    {
+
+        #region  CRC16
+        public static byte[] CRC16(byte[] data)
+        {
+            int len = data.Length;
+            if (len > 0)
+            {
+                ushort crc = 0xFFFF;
+
+                for (int i = 0; i < len; i++)
+                {
+                    crc = (ushort)(crc ^ (data[i]));
+                    for (int j = 0; j < 8; j++)
+                    {
+                        crc = (crc & 1) != 0 ? (ushort)((crc >> 1) ^ 0xA001) : (ushort)(crc >> 1);
+                    }
+                }
+                byte hi = (byte)((crc & 0xFF00) >> 8);  //高位置
+                byte lo = (byte)(crc & 0x00FF);         //低位置
+
+                return new byte[] { hi, lo };
+            }
+            return new byte[] { 0, 0 };
+        }
+        #endregion
+
+        #region  ToCRC16
+        public static string ToCRC16(string content)
+        {
+            return ToCRC16(content, Encoding.UTF8);
+        }
+
+        public static string ToCRC16(string content, bool isReverse)
+        {
+            return ToCRC16(content, Encoding.UTF8, isReverse);
+        }
+
+        public static string ToCRC16(string content, Encoding encoding)
+        {
+            return ByteToString(CRC16(encoding.GetBytes(content)), true);
+        }
+
+        public static string ToCRC16(string content, Encoding encoding, bool isReverse)
+        {
+            return ByteToString(CRC16(encoding.GetBytes(content)), isReverse);
+        }
+
+        public static string ToCRC16(byte[] data)
+        {
+            return ByteToString(CRC16(data), true);
+        }
+
+        public static string ToCRC16(byte[] data, bool isReverse)
+        {
+            return ByteToString(CRC16(data), isReverse);
+        }
+        #endregion
+
+        #region  ToModbusCRC16
+        public static string ToModbusCRC16(string s)
+        {
+            return ToModbusCRC16(s, true);
+        }
+
+        public static string ToModbusCRC16(string s, bool isReverse)
+        {
+            return ByteToString(CRC16(StringToHexByte(s)), isReverse);
+        }
+
+        public static string ToModbusCRC16(byte[] data)
+        {
+            return ToModbusCRC16(data, true);
+        }
+
+        public static string ToModbusCRC16(byte[] data, bool isReverse)
+        {
+            return ByteToString(CRC16(data), isReverse);
+        }
+        #endregion
+
+        #region  ByteToString
+        public static string ByteToString(byte[] arr, bool isReverse)
+        {
+            try
+            {
+                byte hi = arr[0], lo = arr[1];
+                return Convert.ToString(isReverse ? hi + lo * 0x100 : hi * 0x100 + lo, 16).ToUpper().PadLeft(4, '0');
+            }
+            catch (Exception ex) { throw (ex); }
+        }
+
+        public static string ByteToString(byte[] arr)
+        {
+            try
+            {
+                return ByteToString(arr, true);
+            }
+            catch (Exception ex) { throw (ex); }
+        }
+        #endregion
+
+        #region  StringToHexString
+        public static string StringToHexString(string str)
+        {
+            StringBuilder s = new StringBuilder();
+            foreach (short c in str.ToCharArray())
+            {
+                s.Append(c.ToString("X4"));
+            }
+            return s.ToString();
+        }
+        #endregion
+
+        #region  StringToHexByte
+        private static string ConvertChinese(string str)
+        {
+            StringBuilder s = new StringBuilder();
+            foreach (short c in str.ToCharArray())
+            {
+                if (c <= 0 || c >= 127)
+                {
+                    s.Append(c.ToString("X4"));
+                }
+                else
+                {
+                    s.Append((char)c);
+                }
+            }
+            return s.ToString();
+        }
+
+        private static string FilterChinese(string str)
+        {
+            StringBuilder s = new StringBuilder();
+            foreach (short c in str.ToCharArray())
+            {
+                if (c > 0 && c < 127)
+                {
+                    s.Append((char)c);
+                }
+            }
+            return s.ToString();
+        }
+
+        /// <summary>
+        /// 字符串转16进制字符数组
+        /// </summary>
+        /// <param name="hex"></param>
+        /// <returns></returns>
+        public static byte[] StringToHexByte(string str)
+        {
+            return StringToHexByte(str, false);
+        }
+
+        /// <summary>
+        /// 字符串转16进制字符数组
+        /// </summary>
+        /// <param name="str"></param>
+        /// <param name="isFilterChinese">是否过滤掉中文字符</param>
+        /// <returns></returns>
+        public static byte[] StringToHexByte(string str, bool isFilterChinese)
+        {
+            string hex = isFilterChinese ? FilterChinese(str) : ConvertChinese(str);
+
+            //清除所有空格
+            hex = hex.Replace(" ", "");
+            //若字符个数为奇数，补一个0
+            hex += hex.Length % 2 != 0 ? "0" : "";
+
+            byte[] result = new byte[hex.Length / 2];
+            for (int i = 0, c = result.Length; i < c; i++)
+            {
+                result[i] = Convert.ToByte(hex.Substring(i * 2, 2), 16);
+            }
+            return result;
+        }
+        #endregion
+
+    }
+}