消息框不显示任何C Sharp文本

本文关键字：Sharp 文本 任何 显示 消息 | 更新日期: 2023-09-27 17:52:36

我的消息框应该弹出并询问用户是否要下载新版本的应用程序，如果他们说不，它退出并告诉他们需要下载一个新的副本才能继续。如果他们说是，它会打开一个浏览器到前面提到的网址。现在，弹出消息框却什么也没出现。然而，每当我把代码给我的朋友，他尝试它，它工作。这是怎么了?使用Microsoft Framework 4.0进行编译。

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();
}
}
    }
}

消息框不显示任何C Sharp文本

试试这个:

 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;
}
}
    }
}
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