由于某些原因,在我的SaveFileDialog之后,我的应用程序将永远不会显示MessageBox。有什么我想念的吗?或者这是一个线程问题?
我使用VS 2010 Express将应用程序作为Windows窗体应用程序运行。
我没有任何例外。
添加:当我单步执行代码时,一切似乎都顺利。这很奇怪,所以我认为这是一个时间问题。
LarsTech和其他人指出,MessageBoxes确实出现了,但重点已经消失;换句话说,MessageBox被推到其他窗口后面或最小化。这是一个问题。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.IO;
namespace SpeedDating
{
class Program
{
[STAThread]
static void Main(string[] args)
{
string filename = "test.test"; // args[0];
string ext = filename.Substring(filename.LastIndexOf('.'));
SaveFileDialog dialog = new SaveFileDialog();
dialog.Title = "SpeedDating App";
dialog.RestoreDirectory = true;
dialog.CheckFileExists = false;
dialog.CheckPathExists = false;
dialog.FileName = DateTime.Now.ToString("yyyyMMdd") + ext;
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK && dialog.FileName != "")
{
try
{
FileStream outfs = File.Create(dialog.FileName);
FileStream infs = File.Open(filename, FileMode.Open);
infs.CopyTo(outfs);
infs.Close();
outfs.Close();
}
catch (NotSupportedException ex)
{
MessageBox.Show("Probably removed the original file.");
}
}
else
{
MessageBox.Show("No path found to write to.");
}
MessageBox.Show("I came here and all I got was this louzy printline");
}
}
}
答案 0 :(得分:4)
我尝试了这个,它立即显示:
MessageBox.Show(new Form() { WindowState = FormWindowState.Maximized, TopMost = true }, "You clicked Cancel button", "Cancel");
答案 1 :(得分:2)
请尝试使用此消息框。
MessageBox.Show(this,"Probably removed the original file.");
答案 2 :(得分:1)
我创建了一个新项目并粘贴了您的代码,它对我有用。确保在运行之前完成了完全重建。另外,用这一行:
dialog.FileName = DateTime.Now.ToString(format) + "." + ext;
该对话框将有一个文件名开头。因此,只有按下取消按钮(假设您没有先清除保存对话框)将触发消息框。无论哪种方式,我都会通过失败你的IF测试来弹出消息框。你的代码看起来没问题。
答案 3 :(得分:1)
也许您应该将SaveFileDialog
置于使用中以确保在MessageBox调用之前将其丢弃:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Globalization;
using System.IO;
namespace SpeedDating
{
class Program
{
[STAThread]
static void Main(string[] args)
{
string filename = "test.test"; // args[0];
string ext = filename.Substring(filename.LastIndexOf('.'));
using (SaveFileDialog dialog = new SaveFileDialog())
{
dialog.Title = "SpeedDating App by K.Toet";
dialog.RestoreDirectory = true;
dialog.CheckFileExists = false;
dialog.CheckPathExists = false;
dialog.FileName = DateTime.Now.ToString("yyyyMMdd") + ext;
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK && dialog.FileName != "")
{
try
{
FileStream outfs = File.Create(dialog.FileName);
FileStream infs = File.Open(filename, FileMode.Open);
infs.CopyTo(outfs);
infs.Close();
outfs.Close();
}
catch (NotSupportedException ex)
{
MessageBox.Show("Probably removed the original file.");
}
}
else
{
MessageBox.Show("No path found to write to.");
}
}
MessageBox.Show("I came here and all I got was this louzy printline");
}
}
}