本篇是基本知识，老码农请无视！！！

	普通	静态	抽象	密封	分部
修饰关键字	无	static	abstract	sealed	partial
构造函数调用时机	实例化(new)时	内部任意静态成员调用时	子类实例化(new)时	实例化(new)时	实例化(new)时
包含成员	字段 属性 方法 事件 索引器 运算符重载 自定义类型	静态字段 静态属性 静态方法 静态事件 自定义类型	普通类所有的成员 抽象属性 抽象方法 抽象事件 抽象索引器	与普通类所有的成员	与普通类所有的成员
特征	可实例化(new)，可继承	只有一份，直接用类名调用	必须子类实例化	不能有子类	实质就是把一个类分成多个部分来写，类名相同

    #region 普通类/// <summary>/// 普通类/// </summary>public class CommonClass{/// <summary>/// 自定义枚举类型/// </summary>enum MyEnum{enum1,enum2}/// <summary>/// 自定义委托类型/// </summary>public delegate void MyDeleaget();/// <summary>/// 构造函数/// </summary>public CommonClass(){_arr = new double[10];}/// <summary>/// 字段/// </summary>private string _myField;/// <summary>/// 属性/// </summary>public string MyProperty { get; set; }/// <summary>/// 方法/// </summary>public void MyMethod(){ }/// <summary>/// 事件/// </summary>public event MyDeleaget MyEvent;/// <summary>/// 运算符重载/// </summary>/// <param name="a"></param>/// <param name="b"></param>/// <returns></returns>public static CommonClass operator +(CommonClass a, CommonClass b){return new CommonClass() { MyProperty = a.MyProperty + b.MyProperty };}/// <summary>/// 索引器集合/// </summary>double[] _arr;/// <summary>/// 索引器/// </summary>/// <param name="index"></param>/// <returns></returns>public double this[int index]{get{return _arr[index];}set{_arr[index] = value;}}}#endregion#region 静态类public static class StaticClass{/// <summary>/// 静态构造函数/// </summary>static StaticClass(){Console.WriteLine("静态类构造函数");}/// <summary>/// 静态方法/// </summary>public static void StaticMethod(){Console.WriteLine("静态类中静态方法");}/// <summary>/// 静态属性/// </summary>public static string StaticProperty { get; set; }/// <summary>/// 自定义委托类型/// </summary>public delegate void MyDeleaget();/// <summary>/// 字段/// </summary>private static string _myField;/// <summary>/// 事件/// </summary>public static event MyDeleaget MyEvent;}#endregion#region 抽像类/// <summary>/// 抽像类/// </summary>public abstract class AbstractClass{public AbstractClass(){Console.WriteLine("抽象类构造函数");}/// <summary>/// 自定义委托类型/// </summary>public delegate void MyDeleaget();/// <summary>/// 属性/// </summary>public string MyProperty { get; set; }/// <summary>/// 方法/// </summary>public abstract void MyMethod();/// <summary>/// 事件/// </summary>public abstract event MyDeleaget MyEvent;/// <summary>/// 索引器/// </summary>/// <param name="index"></param>/// <returns></returns>public abstract double this[int index] { get; set; }}#endregion#region 密封类/// <summary>/// 密封类/// </summary>public sealed class SealedClass{/// <summary>/// 构造函数/// </summary>public SealedClass(){Console.WriteLine("密封类构造函数");}/// <summary>/// 自定义委托类型/// </summary>public delegate void MyDeleaget();/// <summary>/// 字段/// </summary>private string _myField;/// <summary>/// 属性/// </summary>public string MyProperty { get; set; }/// <summary>/// 方法/// </summary>public void MyMethod(){ }/// <summary>/// 事件/// </summary>public event MyDeleaget MyEvent;/// <summary>/// 运算符重载/// </summary>/// <param name="a"></param>/// <param name="b"></param>/// <returns></returns>public static SealedClass operator +(SealedClass a, SealedClass b){return new SealedClass() { MyProperty = a.MyProperty + b.MyProperty };}/// <summary>/// 索引器集合/// </summary>double[] _arr;/// <summary>/// 索引器/// </summary>/// <param name="index"></param>/// <returns></returns>public double this[int index]{get{return _arr[index];}set{_arr[index] = value;}}}#endregion#region 分部类/// <summary>/// 分部类1/// </summary>public partial class PartialClass{public PartialClass(){Console.WriteLine("分部类构造函数");}/// <summary>/// 自定义委托类型/// </summary>public delegate void MyDeleaget();/// <summary>/// 字段/// </summary>private string _myField;/// <summary>/// 属性/// </summary>public string MyProperty { get; set; }/// <summary>/// 方法/// </summary>public void MyMethod(){ }/// <summary>/// 运算符重载/// </summary>/// <param name="a"></param>/// <param name="b"></param>/// <returns></returns>public static PartialClass operator +(PartialClass a, PartialClass b){return new PartialClass() { MyProperty = a.MyProperty + b.MyProperty };}/// <summary>/// 索引器集合/// </summary>double[] _arr;}/// <summary>/// 分部类1/// </summary>public partial class PartialClass{/// <summary>/// 事件/// </summary>public event MyDeleaget MyEvent;/// <summary>/// 索引器/// </summary>/// <param name="index"></param>/// <returns></returns>public double this[int index]{get{return _arr[index];}set{_arr[index] = value;}}}#endregion