程序師世界是廣大編程愛好者互助、分享、學習的平台,程序師世界有你更精彩!
首頁
編程語言
C語言|JAVA編程
Python編程
網頁編程
ASP編程|PHP編程
JSP編程
數據庫知識
MYSQL數據庫|SqlServer數據庫
Oracle數據庫|DB2數據庫
 程式師世界 >> 編程語言 >> .NET網頁編程 >> C# >> C#入門知識 >> 一個結構體保存和窗口位置大小記錄的類

一個結構體保存和窗口位置大小記錄的類

編輯:C#入門知識

 

考完試了,階段性的休息一下,最近在寫一個數據加密軟件叫Privacy Data Safe ,這不是一個簡單的小軟件,而是一個功能十分強大的軟件,目前還處於初步的設計階段,但是一個成功的軟件總是在細節考慮得很周到,例如 :記錄窗口上次關閉的位置和大小,等等細節,但是技術鍍金還是要有個度的,太追求完美勢必適得其反,倒不如把這些東西封裝在一起,拿來就用

 

不說費話了,先看看這段代碼,其實就是把 序列化 和 文件讀寫 合到一塊了

namespace PDSafe.Base

{

    public class Setting

    {

        ///<summary>

        /// 把對象序列化為字節數組

        ///</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>

        /// 把字節數組反序列化成對象

        ///</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)

        {

            //如果不存在創建文件

            FileStream fs;

            if ((!File.Exists(path)) && isCeranew)

            {

                try

                {

                    fs = File.Create(path);

                }

                catch

                {

                    return false;

                }

            }

            //如果存在則打開

            else

            {

                try

                {

                    fs = File.Open(path, FileMode.Open, FileAccess.Write);

                }

                catch

                {

                    return false;

                }

 

            }

            //寫文件

            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;

            }

 

            //讀入緩存

            StreamReader sreader = new StreamReader(fs);

            string str = sreader.ReadToEnd();

            fs.Close();

            sreader.Close();

            //分析內容

            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個結構體類型的數據

bool Save(filePath,value,true);

還有讀取被保存數據的文件,從中讀取,這個結構體被裝箱,要做的只是拆箱

object result = Save(filePath,將要保存的數據實例,true)

if(result != null)//確認文件存在且讀取成功

...........

 

將這兩個功能結合,能不能把窗口的位置和大小記錄下來呢,當然可以,首先要做的事聲明一個結構體,用來保存大小和位置還有狀態

•     [Serializable]

•             public struct FormSizeandLocation

•             {

•                 public int SizeW;

•                 public int SizeH;

•                 public int LocationX;

•                 public int LocationY;

•                 public int Style;

•             }

然後進行保存和設置,代碼108-172行都是對於它的處理,How does it work?

•     讓用戶給出一個窗口實例

•     訂閱實例的 Load和Closing事件

•     在load事件中把保存的文件讀取,並更改實例的位置和大小

•     在closing事件中把大小和位置保存

AddRenewFormSizeControl(this);

 //只需一句代碼,一定要寫在InitializeComponent函數後。不能寫在load事件裡

 

注意,保存的文件是 工作路徑+Location.set 你也可以自己改寫此類。

 

想了解的話看看怎麼實現的,想用的拿去就用沒必要了解工作原理。

沒什麼技術含量....

 

摘自 A Dream

  1. 上一頁:
  2. 下一頁:
Copyright © 程式師世界 All Rights Reserved