添加crc

MainWindow.xaml.cs

@@ -108,8 +108,7 @@ namespace SUNLIGHT_CDKEY
             string a, b;
 
             a= sn_id.Text.Substring(0, 6);
-
-            b = (255-y).ToString()+ (255 - m).ToString()+(255 - d).ToString();
+            b=(2255-y).ToString()+(255-m).ToString()+(255-d).ToString();
 
             cdk.Text = a + b + CRCcheck16.ToCRC16(CRCcheck16.StringToHexByte(b), true);
         }