如何使每個類的方法都可以訪問變量？

Question

我有一個名爲「模式」的int。我想讓每個功能都能夠訪問它。

這是我的代碼。

namespace WindowsFormsApplication1 
{ 
    public partial class Form5 : Form 
    { 
     public Form5() 
     { 
      InitializeComponent(); 
     } 

     private void button1_Click(object sender, EventArgs e) 
     { 
      int wow = mode - 1; 
     } 

     private void Form5_Load(object sender, EventArgs e) 
     { 
      int mode = 4; 
     } 
    } 
} 

Answer 1

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 WindowsFormsApplication1 
{ 
public partial class Form5 : Form 
{ 

    public int mode; 
    public Form5() 
    { 
     InitializeComponent(); 
    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     int wow = mode - 1; 
    } 

    private void Form5_Load(object sender, EventArgs e) 
    { 
     mode = 4; 
    } 
} 
} 

不過，我會感到驚訝，如果沒有這個一個SO頁面。另外，我建議看看MSDN和其他編程C＃.net資源。

Answer 2

只是讓它成爲這個類的一個屬性。

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 WindowsFormsApplication1 
{ 
public partial class Form5 : Form 
{ 
    public int mode {get; set;} 
    public Form5() 
    { 
     InitializeComponent(); 
    } 

    private void button1_Click(object sender, EventArgs e) 
    { 
     int wow = mode - 1; 
    } 

    private void Form5_Load(object sender, EventArgs e) 
    { 
     mode = 4; 
    } 
} 
}