C#中的默认构造函数是什么？
类构造函数是类的特殊成员函数，只要我们创建该类的新对象，该构造函数便会执行。默认构造函数没有任何参数。
以下是显示如何在C#中使用默认构造函数的示例-
示例
using System;
namespace LineApplication {
class Line {
private double length; // Length of a line
public Line(double len) { //Parameterized constructor
Console.WriteLine("Object is being created, length = {0}", len);
length = len;
}
public void setLength( double len ) {
length = len;
}
public double getLength() {
return length;
}
static void Main(string[] args) {
Line line = new Line(10.0);
Console.WriteLine("Length of line : {0}", line.getLength());
//设置线长
line.setLength(6.0);
Console.WriteLine("Length of line : {0}", line.getLength());
Console.ReadKey();
}
}
}输出结果
Object is being created, length = 10 Length of line : 10 Length of line : 6