c# 中属性与字段
今天回頭學(xué)習(xí)c# 的基礎(chǔ),看到屬性的定義,忽然明白一個(gè)簡(jiǎn)單的道理:字段定義為Private,不需要class 的外部進(jìn)行訪問(wèn),那么就可以搞個(gè)屬性對(duì)private 的字段進(jìn)行g(shù)et,set,
還有一個(gè)理由就是這個(gè)private 的字段有時(shí)是只讀取的,不允許外部賦值寫入,那么就只搞個(gè)get 的屬性O(shè)K了
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms;namespace SampleClass {public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1_Click(object sender, EventArgs e){Add add=new Add();add.FirstNumber = 9;//add.SencondNumber = 6; //只讀字段賦值報(bào)錯(cuò)int addResult=add.GetAdd();//textBox1.Text = addResult.ToString();textBox1.Text = add.SencondNumber.ToString();}}public class Add{private int firsNumber;private int sencondNumber=10;public Add(){}public int FirstNumber{get => firsNumber;set => firsNumber = value;}public int SencondNumber{get => sencondNumber; //sendcondNumber 字段只讀//set => sencondNumber = value; }public int GetAdd(){return firsNumber + sencondNumber;}} }?
轉(zhuǎn)載于:https://www.cnblogs.com/wenjie0904/p/9949897.html
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