C# 继承类实例讲解
//创建基类
class Student
{
protected string Id,Name,Sex;
public Student(string id,string name,string sex)
{
Id=id;
Name=name;
Sex=sex;
}
public string Show()
{
return "学号："+this.Id+"，姓名："+Name+"，性别："+Sex;
}
}
//创建派生类
class Stu:Student
{
private byte Score1,Score2;
public Stu(string id,string name,string sex,byte score1,byte score2):base(id,name,sex)
{
this.Score1=score1;
this.Score2=score2;
}
public uint Total()
{
return (uint)Score1+(uint)Score2;
}
public float Avarage()
{
return (float)(Score1+Score2)/2;
}
}
private void button1_Click(object sender, System.EventArgs e)
{
if(txtId.Text=="")
return;
label1.Text="";
byte Math=byte.Parse(txtMath.Text);
byte Phy=byte.Parse(txtPhy.Text);
Stu s1=new Stu(txtId.Text,txtName.Text,txtSex.Text,Math,Phy);
label1.Text=s1.Show()+"/n平均分："+s1.Avarage()+"，总分："+s1.Total();
}
private void Form1_Load(object sender, System.EventArgs e)
{
/*声明并实例化类对象*/
Stu s=new Stu("0604382","王庆坤","男",96,99);
label1.Text=s.Show()+"/n平均分："+s.Avarage()+"，总分："+s.Total();
}
很简单吧！一看就能明白其中的道理