1.如何监视目录using System;
using System.IO;
namespace Watcher
{
/// <summary>
/// Summary description for Class1.
/// </summary>
public class Watcher
{ public static void Main()
{ string[] args = System.Environment.GetCommandLineArgs();
// If a directory is not specified, exit program.
if(args.Length != 2)
{
// Display the proper way to call the program.
Console.WriteLine("Usage: Watcher.exe (directory)");
return;
} // Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = args[1];
/* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = "*.txt"; // Add event handlers.
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnRenamed); // Begin watching.
watcher.EnableRaisingEvents = true; // Wait for the user to quit the program.
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read()!='q');
} // Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
} private static void OnRenamed(object source, RenamedEventArgs e)
{
// Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
}
}}
using System.IO;
namespace Watcher
{
/// <summary>
/// Summary description for Class1.
/// </summary>
public class Watcher
{ public static void Main()
{ string[] args = System.Environment.GetCommandLineArgs();
// If a directory is not specified, exit program.
if(args.Length != 2)
{
// Display the proper way to call the program.
Console.WriteLine("Usage: Watcher.exe (directory)");
return;
} // Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = args[1];
/* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = "*.txt"; // Add event handlers.
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnRenamed); // Begin watching.
watcher.EnableRaisingEvents = true; // Wait for the user to quit the program.
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read()!='q');
} // Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
} private static void OnRenamed(object source, RenamedEventArgs e)
{
// Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
}
}}
ServiceController sc = new ServiceController();
sc.ServiceName = "Alerter";
Console.WriteLine("The Alerter service status is currently set to {0}",
sc.Status.ToString()); if (sc.Status == ServiceControllerStatus.Stopped)
{
// Start the service if the current status is stopped. Console.WriteLine("Starting the Alerter service...");
try
{
// Start the service, and wait until its status is "Running".
sc.Start();
sc.WaitForStatus(ServiceControllerStatus.Running);
// Display the current service status.
Console.WriteLine("The Alerter service status is now set to {0}.",
sc.Status.ToString());
}
catch (InvalidOperationException)
{
Console.WriteLine("Could not start the Alerter service.");
}
}
3.windows service程序创建后生成成功了,如何安装
在.Net中用C#创建Windows Service，其实很简单，按照以下的步骤就可以做出一个简单的Windows Service。
1．首先在创建工程的时候选择Windows Service，这样.Net会自动生成Windows Service的框架；
2．完成Windows Service的相应事件，主要是OnStart和OnStop这两个事件，完成后大致代码如下：
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.ServiceProcess;
using System.IO;
using System.Threading;
namespace WinSDemo
{
public class WinSDemo : System.ServiceProcess.ServiceBase
{ /// <summary>
/// Required designer variable.
/// </summary> private System.ComponentModel.Container components = null; private bool blnStopThread; private Thread thdMain; public WinSDemo() { // This call is required by the Windows.Forms Component Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call } // The main entry point for the process static void Main() { System.ServiceProcess.ServiceBase[] ServicesToRun; // More than one user Service may run within the same process. To add // another service to this process, change the following line to // create a second service object. For example, // ServicesToRun = new System.ServiceProcess.ServiceBase[] { new WinSDemo() }; System.ServiceProcess.ServiceBase.Run(ServicesToRun); } /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { // // WinSDemo // this.CanPauseAndContinue = true; this.ServiceName = "MyTest"; } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } /// <summary> /// Set things in motion so your service can do its work. /// </summary> protected override void OnStart(string[] args) { // TODO: Add code here to start your service. thdMain=new Thread(new ThreadStart(WriteLog)); thdMain.Start(); } /// <summary> /// Stop this service. /// </summary> protected override void OnStop() { // TODO: Add code here to perform any tear-down necessary to stop your service. blnStopThread=true; thdMain.Join(); } protected override void OnPause() { thdMain.Suspend(); } protected override void OnContinue() { thdMain.Resume(); } protected void WriteLog() { StreamWriter myWriter=null; do { Process.Start("net","send localhost yourValue"); try { myWriter=new StreamWriter("c:\\MyLog.txt",true); myWriter.WriteLine(DateTime.Now.ToString()); myWriter.Close(); } catch{}; Thread.Sleep(5000); }while(blnStopThread==false); } }} 注：为了使自己能更好的识别自己写的Windows Service，建议在InitializeComponent修改Service的名称。 3．为了使自己写的Service能加载到系统中去，光靠以上步骤是不够；接下来，向当前的工程添加Service Installer，在其中设置Service安装后的起始状态，代码如下：using System;using System.Collections;using System.ComponentModel;using System.Configuration.Install;using System.ServiceProcess; namespace WinSDemo{ /// <summary> /// Summary description for WinSDemoIns. /// </summary> [RunInstaller(true)] public class WinSDemoIns : System.Configuration.Install.Installer { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; private ServiceInstaller serviceInstaller; private ServiceProcessInstaller processInstaller; public WinSDemoIns() { // This call is required by the Designer. InitializeComponent(); // TODO: Add any initialization after the InitComponent call processInstaller = new ServiceProcessInstaller(); serviceInstaller = new ServiceInstaller(); // Service will run under system account processInstaller.Account = ServiceAccount.LocalSystem; // Service will have Start Type of Manual serviceInstaller.StartType = ServiceStartMode.Automatic; serviceInstaller.ServiceName = "MyTest"; Installers.Add(serviceInstaller); Installers.Add(processInstaller); } #region Component Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { components = new System.ComponentModel.Container(); } #endregion }} 4．完成以上的步骤，代码的部分就完成了，编译成可执行文件，再用.Net的Service安装工具就行了，即在Dos窗口中，键入“installutil yourService.exe”，这样执行就可以了，相反，如果想卸载Service的话，加一个参数就可以了，即“installutil /u yourService.exe”。注意有可能.Net的路径在环境变量中不存在，可能直接执行是不能成功的，希望先找到“installutil.exe”存在的目录，大致在“\WINDOWS\Microsoft.NET\Framework\v1.1.4322”目录下。 至于以后Service的部署，由于.Net写的程序，运行环境必须要安装.Net Framework，所以在其他机器安装自己写的Service时候，一定要先安装.Net运行环境。
using System.Collections;
using System.Configuration.Install;
using System.ServiceProcess;
using System.ComponentModel;[RunInstallerAttribute(true)]
public class MyProjectInstaller: Installer{
private ServiceInstaller serviceInstaller1;
private ServiceInstaller serviceInstaller2;
private ServiceProcessInstaller processInstaller; public MyProjectInstaller(){
// Instantiate installers for process and services.
processInstaller = new ServiceProcessInstaller();
serviceInstaller1 = new ServiceInstaller();
serviceInstaller2 = new ServiceInstaller(); // The services run under the system account.
processInstaller.Account = ServiceAccount.LocalSystem; // The services are started manually.
serviceInstaller1.StartType = ServiceStartMode.Manual;
serviceInstaller2.StartType = ServiceStartMode.Manual; // ServiceName must equal those on ServiceBase derived classes.
serviceInstaller1.ServiceName = "Hello-World Service 1";
serviceInstaller2.ServiceName = "Hello-World Service 2"; // Add installers to collection. Order is not important.
Installers.Add(serviceInstaller1);
Installers.Add(serviceInstaller2);
Installers.Add(processInstaller);
}
}
using System.Timers;protected Timer _updaterTimer;
_updaterTimer = new Timer();
_updaterTimer.Interval = 1000; //1秒钟
_updaterTimer.Enabled = true;
_updaterTimer.Elapsed += new ElapsedEventHandler(OnTimer);protected void OnTimer(Object source, ElapsedEventArgs e)
{
...
}或者用THREAD
using System;
using System.Threading;// Simple threading scenario: Start a static method running
// on a second thread.
public class ThreadExample {
// The ThreadProc method is called when the thread starts.
// It loops ten times, writing to the console and yielding
// the rest of its time slice each time, and then ends.
public static void ThreadProc() {
for (int i = 0; i < 10; i++) {
Console.WriteLine("ThreadProc: {0}", i);
// Yield the rest of the time slice.
Thread.Sleep(0);
}
} public static void Main() {
Console.WriteLine("Main thread: Start a second thread.");
// The constructor for the Thread class requires a ThreadStart
// delegate that represents the method to be executed on the
// thread. C# simplifies the creation of this delegate.
Thread t = new Thread(new ThreadStart(ThreadProc));
// Start ThreadProc. On a uniprocessor, the thread does not get
// any processor time until the main thread yields. Uncomment
// the Thread.Sleep that follows t.Start() to see the difference.
t.Start();
//Thread.Sleep(0); for (int i = 0; i < 4; i++) {
Console.WriteLine("Main thread: Do some work.");
Thread.Sleep(0);
} Console.WriteLine("Main thread: Call Join(), to wait until ThreadProc ends.");
t.Join();
Console.WriteLine("Main thread: ThreadProc.Join has returned. Press Enter to end program.");
Console.ReadLine();
}
}
Console.Write("\nPlease enter the URL to post data to : ");
String uriString = Console.ReadLine();// Create a new WebClient instance.
WebClient myWebClient = new WebClient();Console.WriteLine("\nPlease enter the fully qualified path of the file to be uploaded to the URL");
string fileName = Console.ReadLine();Console.WriteLine("Uploading {0} to {1} ...",fileName,uriString);
// Upload the file to the URL using the HTTP 1.0 POST.
byte[] responseArray = myWebClient.UploadFile(uriString,"POST",fileName);// Decode and display the response.
Console.WriteLine("\nResponse Received.The contents of the file uploaded are: \n{0}",Encoding.ASCII.GetString(responseArray));
-----------------------------------------------------
[C#]
<%@ Import Namespace="System"%>
<%@ Import Namespace="System.IO"%>
<%@ Import Namespace="System.Net"%>
<%@ Import NameSpace="System.Web"%><Script language="C#" runat=server>
void Page_Load(object sender, EventArgs e) {
foreach(string f in Request.Files.AllKeys) {
HttpPostedFile file = Request.Files[f];
file.SaveAs("c:\\inetpub\\test\\UploadedFiles\\" + file.FileName);
}
}</Script>
<html>
<body>
<p> Upload complete. </p>
</body>
</html>
七:文件下载
string remoteUri = "http://www.contoso.com/library/homepage/images/";
string fileName = "ms-banner.gif", myStringWebResource = null;
// Create a new WebClient instance.
WebClient myWebClient = new WebClient();
// Concatenate the domain with the Web resource filename.
myStringWebResource = remoteUri + fileName;
Console.WriteLine("Downloading File \"{0}\" from \"{1}\" .......\n\n", fileName, myStringWebResource);
// Download the Web resource and save it into the current filesystem folder.
myWebClient.DownloadFile(myStringWebResource,fileName);
Console.WriteLine("Successfully Downloaded File \"{0}\" from \"{1}\"", fileName, myStringWebResource);
Console.WriteLine("\nDownloaded file saved in the following file system folder:\n\t" + Application.StartupPath);