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减小] 类型:转载 时间:2013-03-08
这篇文章主要介绍C# Console类的具体用法,需要的朋友可以参考下
Console.Write 表示向控制台直接写入字符串,不进行换行,可继续接着前面的字符写入。 输出到控制台 输出到控制台就是把数据输出到控制台并显示出来。.Net框架提供了console类实现这个任务,输出方式如下: Console.WriteLine(); Console.WrietLine()和Console.Write()的唯一却别就是前者输出后换行,后者不换行。 [2],strName3]); 从控制台输入 Console类提供的输入方法: Console.ReadLine(); 这一句代码返回一个字符串型数据,可以把它直接赋值给字符串变量,如: 控制台输入输出
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//方法一:只禁止多个进程运行
using System;
using System.Collections.Generic;
using System.Windows.Forms;
namespace DuoYeMianIE
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
bool ret;
System.Threading.Mutex mutex = new System.Threading.Mutex(true, Application.ProductName, out ret);
if (ret)
{
System.Windows.Forms.Application.EnableVisualStyles(); //这两行实现 XP 可视风格
System.Windows.Forms.Application.DoEvents(); //这两行实现 XP 可视风格
System.Windows.Forms.Application.Run(new LamBrowser());
// Main 为你程序的主窗体,如果是控制台程序不用这句
mutex.ReleaseMutex();
}
else
{
MessageBox.Show(null, "有一个和本程序相同的应用程序已经在运行,请不要同时运行多个本程序。\n\n这个程序即将退出。", Application.ProductName, MessageBoxButtons.OK, MessageBoxIcon.Warning);
// 提示信息,可以删除。
Application.Exit();//退出程序
}
}
}
}
//方法二:禁止多个进程运行,并当重复运行时激活以前的进程
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Reflection;
namespace DuoYeMianIE
{
static class Program
{
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
//Get the running instance.
Process instance = RunningInstance();
if (instance == null)
{ System.Windows.Forms.Application.EnableVisualStyles(); //这两行实现 XP 可视风格
System.Windows.Forms.Application.DoEvents();
//There isn't another instance, show our form.
System.Windows.Forms.Application.Run(new LamBrowser());
}
else
{
//There is another instance of this process.
HandleRunningInstance(instance);
}
}
public static Process RunningInstance()
{
Process current = Process.GetCurrentProcess();
Process[] processes = Process.GetProcessesByName(current.ProcessName);
//Loop through the running processes in with the same name
foreach (Process process in processes)
{
//Ignore the current process
if (process.Id != current.Id)
{
//Make sure that the process is running from the exe file.
if (Assembly.GetExecutingAssembly().Location.Replace("/", "\\") == current.MainModule.FileName)
{
//Return the other process instance.
return process;
}
}
}
//No other instance was found, return null.
return null;
}
public static void HandleRunningInstance(Process instance)
{
//Make sure the window is not minimized or maximized
ShowWindowAsync(instance.MainWindowHandle, WS_SHOWNORMAL);
//Set the real intance to foreground window
SetForegroundWindow(instance.MainWindowHandle);
}
[DllImport("User32.dll")]
private static extern bool ShowWindowAsync(IntPtr hWnd, int cmdShow);
[DllImport("User32.dll")]
private static extern bool SetForegroundWindow(IntPtr hWnd);
private const int WS_SHOWNORMAL = 1;
}
}
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