MessageBox在C中沒有顯示任何文本

Question

我的消息框應該彈出並詢問用戶是否要下載新版本的應用程序，如果他們說不，則退出並告訴他們需要下載新的副本繼續。如果他們說是的話，它會打開一個瀏覽器到上述的網址。現在，消息框彈出，沒有任何顯示。然而，每當我將代碼交給我的朋友並且他嘗試了它，它就會奏效。這裏有什麼問題？我使用Microsoft Framework 4.0進行編譯。

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace ProjectTest 
{ 
    public partial class Form1 : Form 
{ 
    public Form1() 
    { 
     InitializeComponent(); 
    } 

    private void Form1_Load(object sender, EventArgs e) 
    { 
     Form1_FormClosing(); 
    } 

    private void Form1_FormClosing() 
    { 
    const string message = 
    "There's an updated version of this program available. Would you like to download now?"; 
const string caption = "Please update"; 
var result = MessageBox.Show(message, caption, 
          MessageBoxButtons.YesNo, 
          MessageBoxIcon.Question); 

// If the no button was pressed ... 
if (result == DialogResult.No) 
{ 
    MessageBox.Show("Program will close now. If you want to use this program please update to the newest version.", "Please update"); 
    this.Close(); 
} 
else if (result == DialogResult.Yes) 
{ 
    System.Diagnostics.Process.Start("http://www.google.com"); 
    this.Close(); 
} 
} 

    } 
} 

Answer 1

試試這個：

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace ProjectTest 
{ 
    public partial class Form1 : Form 
{ 
    public Form1() 
    { 
     InitializeComponent(); 
    } 

    private void Form1_Load(object sender, EventArgs e) 
    { 
     this.Close(); 
    } 

    private void Form1_FormClosing() 
    { 
    const string message = 
    "There's an updated version of this program available. Would you like to download now?"; 
const string caption = "Please update"; 
var result = MessageBox.Show(message, caption, 
          MessageBoxButtons.YesNo, 
          MessageBoxIcon.Question); 

// If the no button was pressed ... 
if (result == DialogResult.No) 
{ 
    MessageBox.Show("Program will close now. If you want to use this program please update to the newest version.", "Please update"); 
       e.Cancel = false; 
} 
else if (result == DialogResult.Yes) 
{ 
    System.Diagnostics.Process.Start("http://www.google.com"); 
       e.Cancel = false; 
} 
} 

    } 
}