c#保存窗口位置大小操作类（序列化和文件读写功能）

记录窗口上次关闭的位置和大小

namespace pdsafe.base
{
    public class setting
    {
        ///<summary>
        /// 把对象序列化为字节数组
        ///</summary>
        public static byte[] serializeobject(object obj)
        {
            if (obj == null)
                return null;
            memorystream ms = new memorystream();
            binaryformatter formatter = new binaryformatter();
            formatter.serialize(ms, obj);
            ms.position = 0;
            byte[] bytes = new byte[ms.length];
            ms.read(bytes, 0, bytes.length);
            ms.close();
            return bytes;
        }

        ///<summary>
        /// 把字节数组反序列化成对象
        ///</summary>
        public static object deserializeobject(byte[] bytes)
        {
            object obj = null;
            if (bytes == null)
                return obj;
            memorystream ms = new memorystream(bytes);
            ms.position = 0;
            binaryformatter formatter = new binaryformatter();
            try
            {
                obj = formatter.deserialize(ms);
            }
            catch { obj = null; }
            ms.close();
            return obj;
        }

        public static bool save(string path, object value, bool isceranew)
        {
            //如果不存在创建文件
            filestream fs;
            if ((!file.exists(path)) && isceranew)
            {
                try
                {
                    fs = file.create(path);
                }
                catch
                {
                    return false;
                }
            }
            //如果存在则打开
            else
            {
                try
                {
                    fs = file.open(path, filemode.open, fileaccess.write);
                }
                catch
                {
                    return false;
                }

            }
            //写文件
            byte[] buffer = serializeobject(value);

            try
            {
                for (long i = 0; i < buffer.longlength; i++)
                    fs.writebyte(buffer[i]);
            }
            catch
            {
                return false;
            }
            fs.close();
            return true;
        }

        public static object read(string path)
        {
            filestream fs;
            try
            {
                fs = file.openread(path);
            }
            catch
            {
                return null;
            }

            //读入缓存
            streamreader sreader = new streamreader(fs);
            string str = sreader.readtoend();
            fs.close();
            sreader.close();
            //分析内容
            byte[] buffer = encoding.default.getbytes(str);
            return deserializeobject(buffer);
        }
        [serializable]
        public struct formsizeandlocation
        {
            public int sizew;
            public int sizeh;
            public int locationx;
            public int locationy;
            public int style;
        }
      private static  setting.formsizeandlocation fsp = new setting.formsizeandlocation();
        public static void addrenewformsizecontrol(form form)
        {
            form.formclosing += new formclosingeventhandler(formcloseevent);
            form.load += new eventhandler(formloadevent);
         }
        private static void formcloseevent(object sender, eventargs e)
        {
            form form = (form)sender;
            switch (form.windowstate)
            {
                case formwindowstate.maximized:
                    fsp.style = 2;

                    fsp.sizew = form.width;
                    fsp.sizeh = form.height;
                    fsp.locationx = form.location.x;
                    fsp.locationy = form.location.y;
                    break;
                case formwindowstate.minimized:
                    fsp.style = 1;
                    break;
                case formwindowstate.normal:
                    fsp.style = 0;

                    fsp.sizew = form.width;
                    fsp.sizeh = form.height;
                    fsp.locationx = form.location.x;
                    fsp.locationy = form.location.y;
                    break;
            }
            setting.save(directory.getcurrentdirectory() + @"\" + "location.set", fsp, true);
        }
        private static void formloadevent(object sender, eventargs e)
        {
            form form = (form)sender;
            object result = setting.read(directory.getcurrentdirectory() + @"\" + "location.set");
            if (result != null)
            {
                fsp = (setting.formsizeandlocation)result;
                switch (fsp.style)
                {
                    case 2:
                        form.windowstate = formwindowstate.maximized;
                        break;
                    default:
                        form.windowstate = formwindowstate.normal;
                        break;
                }
                form.left = fsp.locationx;
                form.top = fsp.locationy;
                form.size = new size(fsp.sizew, fsp.sizeh);

            }
        }
    }
}

基本功能就是保存一个结构体类型的数据
bool save（filepath,value,true）;
还有读取被保存数据的文件，从中读取，这个结构体被装箱，要做的只是拆箱
object result = save（filepath，将要保存的数据实例，true）
if（result ！= null）//确认文件存在且读取成功

将这两个功能结合，能不能把窗口的位置和大小记录下来呢，当然可以，首先要做的事声明一个结构体，用来保存大小和位置还有状态

 [serializable]
        public struct formsizeandlocation
        {
            public int sizew;
            public int sizeh;
            public int locationx;
            public int locationy;
            public int style;
        }

然后进行保存和设置，代码108-172行都是对于它的处理，how does it work?
让用户给出一个窗口实例
订阅实例的 load和closing事件
在load事件中把保存的文件读取，并更改实例的位置和大小
在closing事件中把大小和位置保存
addrenewformsizecontrol（this）；
 //只需一句代码，一定要写在initializecomponent函数后。不能写在load事件里

注意，保存的文件是 工作路径+location.set 你也可以自己改写此类。