簡(jiǎn)單講解VB.NET靜態(tài)成員
本文向大家介紹VB.NET靜態(tài)成員,可能好多人還不了解VB.NET靜態(tài)成員,沒(méi)有關(guān)系,看完本文你肯定有不少收獲,希望本文能教會(huì)你更多東西。
VB.NET靜態(tài)成員
在面向?qū)ο缶幊陶Z(yǔ)言中,有一種被稱作靜態(tài)成員的特殊的類成員,VB.NET也有靜態(tài)成員這一概念。無(wú)需對(duì)一個(gè)對(duì)象實(shí)例化就可以使用其中的VB.NET靜態(tài)成員。例如,下面的表中,SalaryLevel類中就只包含有靜態(tài)的域:
- Class SalaryLevel
- Public Shared Level1 As Decimal = 35000
- Public Shared Level2 As Decimal = 40000
- Public Shared Level3 As Decimal = 45000
- Public Shared Level4 As Decimal = 50000
- Public Shared Level5 As Decimal = 55000
- Public Shared Level6 As Decimal = 60000
- Public Shared Level7 As Decimal = 65000
- Public Shared Level8 As Decimal = 70000
- Public Shared Level9 As Decimal = 75000
- Public Shared Level10 As Decimal = 80000
- End Class
我們可以像下表中的程序所演示的那樣在程序中使用類:
- Imports System
- Class SalaryLevel
- Public Shared Level1 As Decimal = 35000
- Public Shared Level2 As Decimal = 40000
- Public Shared Level3 As Decimal = 45000
- Public Shared Level4 As Decimal = 50000
- Public Shared Level5 As Decimal = 55000
- Public Shared Level6 As Decimal = 60000
- Public Shared Level7 As Decimal = 65000
- Public Shared Level8 As Decimal = 70000
- Public Shared Level9 As Decimal = 75000
- Public Shared Level10 As Decimal = 80000
- End Class
- Class Employee
- Dim yearlyBonus As Decimal = 4000
- Public Sub PrintSalary()
- '使用SalaryLevel類的靜態(tài)域向Console輸出工資額
- Console.Write(SalaryLevel.Level4)
- End Sub
- Public Shared Sub Main()
- Dim employee As Employee
- employee = New Employee()
- employee.PrintSalary()
- End Sub
- End Class
在Employee類的PrintSalary方法中,我們可以在不首先創(chuàng)建SalaryLevel類變量的情況下使用其中的靜態(tài)域Level4。不屬于VB.NET靜態(tài)成員的類成員被稱作實(shí)例成員。
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