C#中实现接口排序 .

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IComparable接口和IComparable<T>接口【实现两个对象之间的比较】
接口将会实现CompareTo(Object obj)和CompareTo(Student student)
代码如下:
public int CompareTo(object obj)
{
throw new NotImplementedException();
}
案例:
class Student:IComparable<Student>
{
public string Name { get; set; }
public int Age { get; set; }
public string Address { get; set; }
//该方法实现年龄的比较
public int CompareTo(Student other)
{
return this.Age.CompareTo(other.Age);
}
}
class Program
{
static void Main(string[] args)
{
Student stu1=new Student(){Name="zhangsan",Age=18,Address="xiangfan"};
Student stu2=new Student(){Name="lisi",Age=20,Address="wuhan"};
int result=stu1.CompareTo(stu2);
结果:
如果result>0 stu1.Age > stu2.Age
如果result=0 stu1.Age = stu2.Age
如果result<0 stu1.Age < stu2.Age
}
}
IComparer接口和IComparer<T>接口【可实现集合对象按照对象的某一个属性进行的排序】
接口将实现Compare(Object x,Object y)、Compare(Student x, Student y)
//实现Student类中以年龄进行排序
class ComparerStudentAge:IComparer<Student>
{
public int Compare(Student x,Student y)
{
return x.Age.CompareTo(y.Age);
}
}
//实现Student类中以姓名进行排序
class ComparerStudentName:IComparer<Student>
{
public int Compare(Student x,Student y)
{
return x.Name.CompareTo(y.Name);
}
}
class Program
{
static void Main(string[] args)
{
List<Student> list = new List<Student>()
{
new Student(){ Name="zhangsan", Age=18, Address="上海浦东"},
new Student(){Name="lisi",Age=20,Address="上海闸北"},
new Student(){Name="wangwu",Age=22,Address="襄樊"},
new Student(){Name="zhaoliu",Age=15,Address="武汉"},
new Student(){Name="qianqi",Age=39,Address="随州"},
new Student(){Name="kunkun",Age=21,Address="襄樊"}
};
//使用姓名排序
list.Sort(new ComparerStudentName());
//使用年龄进行排序
list.Sort(New ComparerStudentAge());
}
}