[原]實例-簡單設計&精簡代碼&復用代碼

引言

獨立的Model層數據類型

適度封裝以簡化代碼

    public bool Compile(BGProject project, out String errorMessage)    {        TextCompiler textCompiler = new TextCompiler(project);        ImageCompiler imageCompiler = new ImageCompiler(project);        XxxCompiler xxxCompiler = new XxxCompiler(project);        foreach (CompilerBase compiler in            new CompilerBase[] {textCompiler, imageCompiler, XxxCompiler})        {            compiler.Compile();            if (!compiler.Validate(out errorMessage))            {                return false;            }        }                // ...    }

Don't Repeat Yourself 復用代碼

        protected static void TravelElements<T>(BGProject project, BGElementType elementType, Action<T> action)            where T : BGElement        {            foreach (BGDiagram diagram in project.Diagrams)            {                foreach (T element in                    diagram.Elements.Where(e => e.ElementType == elementType))                {                    action(element);                }            }        }

            TravelElements<BGTextElement>(Project, BGElementType.Text,                                          element =>                                              {                                                  //.... 針對目標元素做相應處理                                              });

處理該特定問題，這里使用委托的方式，泛型化使其易于使用，你也可以使用TemplateMethod模式

合宜地使用靜態類型封裝基本工具類型

序列化工具類

項目中涉及數據序列化到本地文件，直接使用如下工具類型

    public static class SerializeUtility    {        public static void BinarySave<T>(String filePath, T obj)        {            using (Stream stream = new FileStream(filePath, FileMode.Create, Fileaccess.Write, FileShare.None))            {                IFormatter formatter = new BinaryFormatter();                formatter.Serialize(stream, obj);            }        }        public static T BinaryLoad<T>(String filePath)        {            return BinaryLoad<T>(filePath, null);        }        public static T BinaryLoad<T>(String filePath, SerializationBinder serializationBinder)        {            if (!File.Exists(filePath))            {                return default(T);            }            using (Stream stream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.None))            {                IFormatter formatter = new BinaryFormatter();                if (serializationBinder != null)                {                    formatter.Binder = serializationBinder;                }                return (T)formatter.Deserialize(stream);            }        }    }

int與byte數組轉換工具類

涉及到傳輸數據至下位機，考慮數據存儲格式，編寫如下工具類，支持littleEnding與bigEnding

    // Created by Ant 2014-4-30    public static class BytesConverterUtility    {        public static byte[] GetBytes(int value, int length, bool isLittleEndian = true)        {            if (value < 0)            {                throw new ArgumentException("value不能為負數");            }            if (length > 4)            {                throw new ArgumentException("length不能>4");            }            var rawBytes = BitConverter.GetBytes(value);            if (rawBytes.Length < length)            {                throw new applicationException(                    String.Format("BitConverter.GetBytes返回的字符數{0}小于目標字符數{1}", rawBytes.Length, length));            }            var bytes = new byte[length];            if (BitConverter.IsLittleEndian != isLittleEndian)            {                Array.Reverse(rawBytes);                Array.Copy(rawBytes, rawBytes.Length - length,                           bytes, 0, length);            }            else            {                Array.Copy(rawBytes, bytes, length);            }            return bytes;        }        public static int ToInt(byte[] bytes, int offset, int length, bool isLittleEndian = true)        {            if (length == 1)            {                return bytes[offset];            }            var tempBytes = new byte[length];            Array.Copy(bytes, offset, tempBytes, 0, length);            if (!isLittleEndian)            {                Array.Reverse(tempBytes);            }            switch (length)            {                case 2:                    // 特殊處理，轉換為無符號int類型，返回時自動轉換為Int32                    return BitConverter.ToUInt16(tempBytes, 0);                case 4:                    // 注意，這里將數據轉換為有符號int類型                    return BitConverter.ToInt32(tempBytes, 0);                default:                    throw new ArgumentException("length 長度非標準值");            }        }    }

工具類型的方便之處在于其獨立性，幾乎無外部依賴，不需要考慮對其進行初始化，拿來就可以直接使用